Hire Java developers

Java is a programming language and a core component of Oracle Corporation`s Java Platform. The language derives much of its syntax from C and C++ but has a simpler object model and fewer low-level facilities.

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T.P.
    Senior Fullstack Developer
Senior Web Developer (Full-Stack, React.js, WebGL, Shopify)

I am a 12+ years experienced Full-Stack Developer with experiences and skills following:

  • My Main Skills:

    1. React.js, Node.js, AngularJS, Vue.js, D3.js
    2. PHP / Laravel, Laravel Spark, Laravel Boilerplate, Codeigniter, Python / Django
    3. MySQL, PostgreSQL, MongoDB, Redis, Firebase
    4. Shopify, WordPress, WooCommerce, Bigcommerce, Ecwid
  • My Specialities:

    1. WebGL, Three.js, Unity3D, OpenGL ES, OpenCV, OpenFL
    2. Virtual Reality, Argumented Reality, 3D frameworks for Android.
    3. HTML5 Canvas, PIXI.js, GreenSock, 2D&3D Animation
    4. Google Map API, MapBox, Leaflet, GIS
    5. JSON Web Token Authentication
  • Other Strong Skills:

    1. C++,C# Desktop development on Windows and Linux.
    2. Video Streaming with WebRTC, Wowza (RTMP, RTSP, HLS, H.264, H.265)
    3. WebSocket, Socket.io, XMPP, Twilio, WebRTC, CometChat, Applozic Chat integration
    4. iOS/Android development experience (Objective-C, Swift, Android)

  • USD 46.00 / hr
  • USD 5800.00 / mo.
  • Ukraine

S.S.
    Senior Backend Developer
Software rocket scientist Python/C++/Java/SCALA developer

Over more than 10 years, I've developed many web applications of different complexities in Python, Java, Scala, HTML5 and JavaScript. I possess wide experience as both a Team Leader and Project Manager.

Primary Aims:

  1. Provide projects on time
  2. Be mindful of customer needs
  3. Create scalable, easy extensible and excellent quality code and software design
  4. Develop highly advanced, fluid and comprehensive projects.

Preferable technologies:

  1. Python (Django, Flask, SLQAlchemy)
  2. Elixir (OTP, Phoenixframework)
  3. Java 8 (Akka etc, Flink, Spark)
  4. Scala (Play!2, Akka etc, Flink, Spark)
  5. DB (PostgreSQL, MongoDB, InfluxDB)
  6. JavaScript (Angular, Angular 2, React, WebGL)
  7. Valid, Semantic and Responsive Layout (HTML5, xHTML, CSS2/CSS3)

I have also have extensive experience in SCRUM (Agile) Management methodologies. I would be happy to discuss your goals with you further via Skype, and look forward to collaborating with your organization.

  • USD 54.00 / hr
  • USD 6900.00 / mo.
  • Russia

V.M.
    Middle Fullstack Developer
Full-Stack Web Application Developer

Technology stack:

  • Java, Python, node.js, vue.js, HTML/CSS, JavaScript, jQuery
  • ReactJS, Redux, Angular, Spring, Spring Boot, EJB, Hibernate, Bootstrap
  • RESTful, JPA, Elastic Email, Scrapy
  • Database architecture design (MySQL, SQLite, PostgreSQL, MariaDB, Druid, ElasticSearch, MongoDB)
  • Dashboard Analytics (d3.js, AmCharts, HighChart, Google Charts, Chartlist, etc)
  • API development
  • Social network/Payment Systems/Third-party integration
  • Chatbot development, Computer Vision
  • Data scraping and ETL (Extract Transform Load)

My past projects:

  • 2000+ sites data scraping web app
  • multi-channel chatbot platform
  • analytical web app
  • pre-employment assessment web app
  • B2B lead generation tool
  • Instagram/LinkedIn scraping apps
  • refactoring 15 y.o. system / obsolete database data migration
  • real estate monitoring tool
  • recommendation engine

I have more than 6 years of solid experience in web development and a Master Degree in Computer Application, Mathematics.

Always open for new projects and opportunities!

  • USD 30.00 / hr
  • USD 3800.00 / mo.
  • Ukraine

P.P.
    Senior Fullstack Developer
Senior Fullstack developer with Java and AngularJS

I a senior Java engineer with 5+ years of experience in the software development industry. In the last year, I work as a team lead for a small team of Java developers. Delivered 15+ small applications for clients from USA.

  • USD 45.00 / hr
  • USD 6400.00 / mo.
  • Ukraine

A.C.
    Middle Fullstack Developer
Experienced Full-stack Developer (JAVA/Python)

I specialize in Java, Python(Flask, Django), JavaScript (Vue.js, Angular) with MySQL or MongoDB. I know what frameworks work best for each project and make awesome things happen. I always do my best to provide only excellent solutions with good timing, thus I:

  • pay high attention to details and requirements;
  • write clean and readable code;
  • test the final results;
  • make sure the delivery is on time.

  • USD 43.00 / hr
  • USD 3800.00 / mo.
  • Ukraine

I.M.
    Senior Fullstack Developer
Full Stack Java, .NET C#, Ruby on Rails, Golang, Machine Learning

Dedicated and qualified developer ready to realize your ambitious or simple projects. To meet more understanding and to work with more harmony with your team - I'll ready to work in time of your time zone. Also you will be happy to notice, that all previous projects are made on time. I will be glad to help you with your project, if you need responsible and easy communicable developer, and my skills are fit to your project.

Skills:

  • HTML/CSS, Bootstrap, Semantic UI, GSAP, Animation, PSD to HTML, Wordpress
  • React.JS/Redux, Saga, GraphQL, Angular.js, React Native
  • Node, Express, Loopback
  • Java, Spring Boot, Spring MVC, JHipster, Hibernate
  • C#, C/C++, QT, .NET framework, Entity framework, ASP.NET, ASP.NET MVC, .NET Core
  • Ruby on Rails, Grails, Groovy
  • Laravel, Yii, CakePHP, Codeigniter, Symfony
  • Django, Python
  • MySQL, Server Management, MongoDB, PostgreSQL
  • AWS EC2, Lambda, Cognito, DynamoDB
  • Golang, Blockchain Technology, KYC provider
  • Smart Contracts, BitGo, Crypto Exchange
  • Machine Learning, Tensorflow, Price Prediction, Scoring system, Neural networks / Deep Learning,
  • Computer Vision (OpenCV, DLib)
  • Artificial Intelligence, Algorithm Development
  • Augmented Reality - SLAM (Vuforia, ARKit, ARCore, Wikitude, Kudan, AR.js)
  • Virtual Reality (Oculus, Google Cardboard, Samsung Gear)
  • React/React Native, Unity 3D, VueJS, Ember, Flutter, MeteorJs, AngularJS, Swift, Objective C
  • MySQL, SQLite, Redis, PostgreSQL, MongoDB, NoSQL
  • SAP, Microsoft Dynamics Navision, SalesForce, Zoho
  • AWS, Google cloud; Kubernetes, Azure, OpenShift, Heroku, DigitalOcean, Bluemix

  • USD 96.00 / hr
  • USD 12300.00 / mo.
  • Ukraine

Y.O.
    Senior Mobile Developer
Sr. iOS, Android, Flutter, React Native, Unity Mobile App Developer

I am a highly motivated and creative thinking mobile app developer with plenty of energy to bring your idea to life.

I have been developing iOS and Android mobile apps/games since 2012 and have helped over 10 startups and medium-sized companies generate revenue from their apps which have thousands of daily active users.

Now I am working as a full-time individual freelance contractor and I am ready to work with you for your mobile app project. I can also bring a very high skilled team if you want to complete a big project in a short amount of time.

With years of communicating with many customers, I have developed excellent communication skills so I can make sure I am always on the same page about requirements with you.

Well done is better than well said. I will never complete a project until you are 101% satisfied :)

✓ My skill sets: ● Swift / SwiftUI, Objective-C / UIKit, Java / Kotlin, React Native, Flutter / Dart ● Node.js, Vapor, PHP-CodeIgniter/Laravel, Python-Django ● Unity / C# ● React.js, Vue.js, Angular, HTML5/CSS3/SASS, Bootstrap ● Firebase, AWS Lambda / S3 / Cloudfront / EC2, Microsoft Azure ● MySQL, SQLite, MongoDB ● Jira, Trello ● Github, Gitlab, Bitbucket ● MVC, MVP, MVVM, VIPER ● App Store Submission/Approval, Bug fixing, Maintenance, Enhancement, Update

✓ Some important app features I've implemented so far ● Payment tracking ● Cloud integration ● Social media integration ● Real-time messaging ● Video/voice call ● Video/audio streaming/downloading ● Photo/video filtering ● Location tracking ● Push Notifications ● Blockchain ● AR: Augmented Reality ● VR: Virtual Reality ● ML: Machine Learning, Chatbots

  • USD 70.00 / hr
  • USD 8400.00 / mo.
  • Ukraine

Y.Y.
    Senior Mobile Developer
Senior Mobile App Developer (Swift/Java/React Native/Flutter)

Since 2012 my focus has been mobile application development for the iOS and Android platform. I am skilled in all aspects of the full software development cycle, from requirements gathering and planning through development, release, and maintenance.
Freelancing is not a side-gig or hobby for me; it is my full-time occupation, and I bring all of the dedication and skill that entails.

Invigorated by a good challenge and the chance to make things work better, and then, better than that. I pride myself on my ability to express technically complex problems and their solutions without resorting to unnecessary and convoluted jargon.

My experiences include(but not limited to):

  • Mobile development • iOS SDK, Swift/Objective-C, Cocoa Touch, CoreAnimation, CoreData, CoreLocation, CoreImage, Audio Framework, AVFoundation, ARKit • Android sdks, Java/Kotlin • Google Map Service, OpenStreetMap SDK, Skobbler SDK • Firebase, Parse, Pusher, REST, Socket, MySQL/MariaDB, PostgreSQL, SQLite, JSON, XML • Social networks API: Facebook, Twitter, LinkedIn, Instagram, Google+, Tumblr, Foursquare, Flickr • CocoaPods,AFNetworking, ReactiveCocoa • Flurry, TestFlight, Crashlytics, Intercom, Mixpanel, Google Analytics, Admob, Push Notification, Dropbox SDK • In-App Purchase, Stripe SDK, PayPal, Authorization.net
    • Back-end development : PHP/MVC frameworks

  • USD 55.00 / hr
  • USD 6100.00 / mo.
  • Ukraine

I.R.
    Lead Fullstack Developer
Expert Full Stack Developer (Dart, Flutter, Angular)

Hi! Thank you for reviewing my profile.

I am a lead java developer with 14 years of experience and Master’s Degree in Computer Science. Worked with top companies like Gameloft, Ferrari, UBC, CSX.

Now I'm specializing in Dart, Flutter, Angular and I see great potential in these technologies: with Dart you can have 3 clients to your product (iOS, Android and website) much quicker and easier than following a regular approach (building separate native clients). If compared with React Native - Flutter is much faster and Dart is much superior to JavaScript. Dart gives developers a great opportunity to write code once and then share it across clients easily. This approach saves a significant amount of my customer’s time and money.

My passion is to provide my customers with a product that will help them grow their business successfully and improve revenue stream. I care about all the details of my projects and invest my experiences, creativity, and knowledge to achieve the best results. In-depth study of customer's and user's needs allows me to develop sustainable solutions for you to meet your business goals.

I am primarily looking for an opportunity to build a long-term relationship with great clients on ongoing projects.

I am honest and do my best to provide you with a completely transparent and qualified service, as you are expecting. Be sure that with me your project will be in safe hands.

I look forward to hearing from you!

  • USD 52.00 / hr
  • USD 6100.00 / mo.
  • Ukraine

A.A.
    Lead Architect
System Architect - Web & Mobile (Java / Javascript / Flutter / React Native)

15+ yrs of Software Development. Master of Science in IT (MSIT). Working for large Fin-tech corporations, various agencies, and startups. My strong points: Quality and Focus on the result. Looking for long-term collaboration

  • Programming languages: Java, Kotlin, ES6, Dart, Typescript, C/C++, Solidity
  • Fronted/Mobile: Flutter, Angular, RiotJS, React Native
  • Java: Hibernate, Apache Cayenne, Spring Data
  • Databases: PostgreSQL, MySQL, DB2
  • NoSQL: Google Firebase, MongoDB, Redis, Dynamodb, EJDB
  • Other: Ethereum, Spring Boot, Google Guice, Jenkins
  • Teaching the CS course: Java performance tuning at NSU

  • USD 65.00 / hr
  • USD 7700.00 / mo.
  • Russia

S.I.
    Senior Backend Developer
Senior Java (EE) with JavaScript experience with GWT and 2D experience.

15 years of programming experience with managed as well as native languages. Left a permanent contract job for freelance one to have the freedom to think and work outside of the corporate box.

Master Degree in Electronics and Electrical Engineering

Master Degree in Applied Mathematics and Information

Have a permanent dedication to open source development which could be found at github under the project name myNetPCB.

  • EUR 50.00 / hr
  • EUR 8000.00 / mo.
  • Bulgaria

R.K.
    Senior Fullstack Developer
Senior Fullstack Programmer with PM skillset

A passionate programmer with more than 8 years of experience. I provide fully working, extensible and modern (using the best well-known technologies) solutions for my clients. You can hire me to develop from scratch or to be part of your team. if I don't know something, I'll learn it quickly.

  • Scala, NodeJS, Java, Clojure, JavaScript, TypeScript,
  • Play Framework, Akka, Apache Spark, Apache Kafka, Spring Framework
  • AWS, EC2, S3, DynamoDB, Amazon Lambda, RDS, Redshift.
  • Front-End side tech: React, Redux, Babel, Webpack
  • PostgreSQL, NoSQL, MySQL, Redis, MongoDB, Cassandra

  • USD 53.00 / hr
  • USD 8480.00 / mo.
  • Ukraine

R.Y.
    Middle Fullstack Developer
Advanced fullstack developer with Java and JavaScript

I started as a Java developer way back in 2014. Before that, I was working as a QA for antivirus software for another 2 years. I believe honesty, responsibility, and personal commitment are what makes me really stand out among the others. I am result oriented and I try to gain as much as possible business context on the project, to deliver the right solution. I'm willing to learn and grow. Here is a list of my technologies stack

  • Java - Spring Framework, Spring Data, Play Framework, Spring Boot, Hibernate, JUnit, Flyway, (Maven, Gradle)
  • Scala, Spring MVC
  • SQL DB - MySQL, PostgreSQL;
  • non-SQL DB - MongoDB
  • JavaScript - AngularJS, Angular Material, jQuery HTML5

Others:

  • Apache Kafka, REST, Selenium Testing, Elasticsearch

  • USD 35.00 / hr
  • USD 5600.00 / mo.
  • Ukraine

P.K.
    Senior Backend Developer
Senior Certified Java/JEE developer

Over the last 11 years, I have developed a wide range of applications using Java technologies.

  • Spring, Hibernate, JSP, JSF, Apache Wicket, Apache Struts;
  • HTML, CSS, JavaScript, jquery;
  • MySQL, PostgreSQL, Oracle;

  • USD 27.00 / hr
  • USD 3400.00 / mo.
  • Poland

A.M.
    Fullstack Developer
Java / J2EE Developer

I have over 6 years of experience in the information technology industry. Worked in object oriented programming using Java programming language, MySQL and DB2 databases, Linux (Ubuntu) and Windows Xp operating systems. Last four years I've worked as java developer on J2EE Client-servers projects. Before that two years worked as a systems administrator in the internet service provider company.

  • USD 48.00 / hr
  • USD 6100.00 / mo.
  • Russia

A.M.
    Senior Backend Developer
Senior Java/JSP/Struts/Spring Developer

Over the last 20 years, I followed Java history, from 1.0 till current 8-th version. I started with applets and later used many different framework and technologies based on it: XML parsers, XSL translators, Spring Framework, several Apache products (commons, POI, etc.). Later I'm working mainly on server technologies: EJB, XML web services, REST services. I took part in development of subsystems, that intercommunicate using XML-RPC and REST, assess SQL and Big Data databases.

  • USD 36.00 / hr
  • USD 4600.00 / mo.
  • Belarus

N.Z.
    Lead Mobile Developer
Android / IOS Senior Mobile Developer / Architect

I'm a high-quality native iOS and Android apps wizard. I'm Oracle Certified Java developer with Master's degree in CS with 12 years of experience in developing not only Android and IOS projects, but also different projects that made me a great architect, complex issue solver and UX/Features improver in all aspects with experience in huge amount of libraries and frameworks such as Firebase, Parse, Spring and much much more. I'm the best in Android and iOS app development as I'm up to date with new technologies, features, and tricks that Google team or Apple team announce. I have led all projects from scratch up to release with a full understanding of OOP, SOLID, optimization, analysis and user experience. I'm proud of apps I made: GuruShots, LiftDay, LiveMaster, and others, so thanks to my clients that trusted me and gave me that opportunity. NOTE: Please do not be surprised by the large number of described technologies, that's even not all. 13 years is more than enough to be able to work with so many technologies!

  • JAVA: Android(all), JSE, JEE, Kotlin, Groovy.

  • Mobile: Android, IOS.

  • Swift 1/2/3/4: IOS 8/9/10/11.

  • Backend: Spring Boot, Grails/Groovy, XML, JSON, REST, XSL/XSLT.

  • DB: SQLite, Oracle, MySQL, DB2, PL/SQL, XMLDB, PostgreSQL.

  • Severs: Jetty, Tomcat, Apache, IBM Websphere, Parse server.

  • Libraries and Frameworks: Firebase, Gradle, Spring-Android, RoboSpice, Retrofit, ORMLite, Google Services SDK, iOS Extensions, Square libraries, CocoaPods, Parse SDK, Backendless, Layer SDK, AfNetworking, Alamofire, Hearst-DD/ObjectMapper, Facebook SDK, Twitter SDK, Instagram Kit, Flurry SDK, GoogleAppIndexing, Grails, Spring, Struts/Struts2, JPA, Jespa, Hibernate, Ant, Web Services, JMS, JUnit, pi4j(Raspberry Pi, Orange Pi), FFMPEG, DexProtector.

-Tools: Git, SVN, Intellij Idea, xCode 7/8/9, Android Studio, Jira, YouTrack, Zeplin.

-Methodologies: Scrum, Kanban.

  • Experienced in apps that included: Social, Chat, IM Messaging, Map, Filtering, Search, E-commerce, In-app billing/purchases, Store, Fitness, Photos, Event, Backup, Image, Contacts, Calendar, Share, Push, Interactive, Notifications Content/Service extension, Deep link, Navigation, Animation, Crop, File, Upload, JSON, REST, API, Library/Gallery, Paging, Storyboard, Support multiple screen sizes, Full stack, Best practice code, Convention, OOP, Play Store, Itunesconnect, TestFlight.

  • USD 52.00 / hr
  • USD 6600.00 / mo.
  • Russia

P.P.
    Middle Backend Developer
Advanced Java EE/Spring Developer

Web services and backend development with Java EE technology stack is my specialization. I am a perfect fit for your requirements if you are looking for scrupulous, hard-working Java developer who cherishes your business goals. I like to write clean code with reasonable code coverage using JUnit and Mockito.

Technical expertise:

  • Spring Framework
  • Struts1, Struts2
  • JPA, Hibernate
  • JSP
  • Databases: MySQL, Oracle
    • Unit testing (JUnit)
    • Build tools: Ant, Maven

  • USD 36.00 / hr
  • USD 4600.00 / mo.
  • Russia

D.V.
    Lead Fullstack Developer
Lead/Senior Fullstack Developer

I have great experience in Software Engineering (over 11 years) and a great desire to make things better! Worked with different well-known companies (like Cisco, Spirent, Ezhome) on projects of different types, sizes, and complexity levels. Programming language polyglot. Keen to study new technologies and methodologies.

During my career time, I've never been encountered with the situation when something is undoable. Every approach has its own benefits and trade-offs but I'm 99.9%-sure that you can figure out what-why-when to choose in each situation. That's the main point, an impulse in my life that helps me to solve any issue that meets me on my way (not only in my career).

Mostly proficient in the following languages:

  • Javascript (from ES6 to babel:stage-0 + Typescript) (React, Redux, Flux, Apollo, GraphQL, Webpack and a lot more)
  • Java (Spring, Hibernate)
  • Golang
  • Python (Django, Celery)
  • Kotlin

  • USD 84.00 / hr
  • USD 10800.00 / mo.
  • Russia

Y.M.
    Senior Fullstack Developer
Web Scraping (scrapy) / Web Developer

A highly skilled and widely experienced IT professional with 9+ years in the development of web applications based on different technologies such as Spring, Struts, MyBatis, Grails, Hibernate, Jersey, JSP, XML, HTML, CSS, jQuery, AngularJS.

Also I am very experienced in web scraping (scrapy, beautiful soup, lxml, phantomjs and selenium frameworks) and have good skills in linux (installation, configuration, bash scripting).

In-depth knowledge and experience in information systems architecture, software design methodologies, software design patterns, and object oriented analysis and design.

  • In-depth knowledge and experience in information systems architecture, software design methodologies, software design patterns, and object oriented analysis and design.
  • Proficiency in all stages of software development lifecycle.
  • Strong analytical and problem-solving capabilities, powerful troubleshooting skills.
  • Self-disciplined, highly motivated and a quick learner.
  • Strong team player with the ability to work effectively in a team environment.

PS: My freelancer.com username is rty567

  • USD 36.00 / hr
  • USD 4600.00 / mo.
  • Belarus

E.I.
    Senior Backend Developer
Swift/Java Developer

Seasoned professional focused on Swift / Cocoa programming for macOS and iPhone/iPad app development using Swift / Cocoa Touch. Reliable, trustworthy, and committed, continuously striving for improvement in the development process for the team as well as individually.

  • Continuous experience in all SDLC phases of off-the-shelf, in-house, and external projects;

  • Emphasis on UX/UI, object-oriented design, code reuse, and design patterns;

  • Good database design skills gained through many years of experience;

  • Solid business communication skills;

  • Configuration management skills;

  • Code testing skills;

  • Solid knowledge of object-oriented and procedural design, OOP, MVC architecture, n-tier architecture;

  • Mac: Swift, Objective-C, Cocoa, Xcode, CloudKit. 3.5 years of development experience.

  • Mobile: iOS 3-10, Swift, Objective-C, Cocoa Touch, Xcode 4-8, SQLite, Parse, Core Data. 2+ years of experience.

  • Software Development Environments / Languages: Swift (1.1-4.0, 2+ yrs. exp.), Objective-C (3 yrs. exp.), Cocoa, C++, C, JavaScript, jQuery, HTML, XML, UML, Visual Basic 5/6 and VBA (1+ yr. exp.), CSS, SQL (17+ yrs. exp.), CodeWarrior Pro 7 for C++, Rational Rose.

  • Java: JDK 1.1 - Java SE 7 (JDBC, Swing, Applets, JWS, JNLP), Java EE 1.2-1.5 (EJB 2/3, JSP, Servlets, JSF, Web Services), JUnit, DbUnit, Ant, JSR 168, JSR 286, Hudson, Struts, EAD4J. Rational Application Developer 6-7, JBossIDE 1.6, Eclipse, NetBeans 7, Oracle JDeveloper 10g/11g, WebSphere Portlet Factory 6.1, WebSphere Studio Application Developer 4/5, Borland JBuilder (4-X). More than 8 years of experience.

  • Java Application Servers: WebSphere AS 4-7, WebSphere Portal 7, JBoss 4, Tomcat 3/4.

  • Version Control: Subversion, CVS, Git, ClearCase.

  • Web Services: SOAP, WSDL, REST, JSON.

  • DB: FoxPro for Windows, Macintosh & DOS (up to 7.0; 6.5 yrs. exp.), Oracle 10-11 (5+ yrs. exp.), SQLite, DB2, MySQL 3/4.

  • OS: macOS 10.6 - 10.13, Windows 95 - 7, Unix, Linux, MacOS System 7, DOS.

  • Networking / Protocols: HTTP, WSRP, UDP, RADIUS, telnet.

  • USD 19.00 / hr
  • USD 2500.00 / mo.
  • Russia

I.S.
    Senior Backend Developer
Senior Java Developer

Expert in the following areas:

  • Java Core
  • Technologies and Frameworks: Spring Framework (Core, MVC, DI, AOP), AWS(RDS, EC2, S3, SQS, ElastiCache Redis), Spring Boot.
  • Database Access: JDBC, Hibernate, Spring(JDBCTemplate, HibernateTemplate, JpaTemplate), Spring Data.
  • Application/Web Servers: Tomcat, Eclipse Virgo.
  • Databases: MySQL, PostgreSQL, SQLite, CouchBase.
  • JMS: Spring JmsTemplate
  • DB Migration: FlyWay
  • Unit Testing Tools: JUnit, TestNG, Mockito, Mock MVC
  • Reporting Tools: Jasper Report

  • USD 42.00 / hr
  • USD 5400.00 / mo.
  • Ukraine

A.B.
    Senior Backend Developer
Senior Developer/Team Lead J2EE

Senior Java/J2EE Developer/Team Lead. More than 10 years of experience in software development. Professional developer in Java since 2004. I have a solid background in:

  • Core Java, J2EE, Spring framework, JSF, JSP, JSTL, Hibernate, Velocity, Lucene, SOAP, JUnit, Eclipse, MySQL, MsSQL, Oracle, Linux. I am a highly motivated and hard working person.

  • USD 24.00 / hr
  • USD 3100.00 / mo.
  • Ukraine

V.D.
    Senior Fullstack Developer
Fullstack Java developer | Kotlin | Node.js | Kafka | GraphQL | REST

I'm Full stack Java developer and system architect with significant technical and analytical skills. I have been team-leading for desktop, web and mobile application, backend and frontend development for corporative and individual clients in financial, fintech & IoT and other areas for the last 10 years.

BACKEND:

  • Java, Node.js, Multithreading, Spring, Spring IOC, Spring Security, Spring MVC, Kotlin, JPA (1,2), REST, Hibernate, Kundera, JMS, IBM MQ, WebServices, JDBC, JSP, AspectJ AOP, JavaMail, Ehcache, JUnit, Akka, Kafka, Struts 2, Vaadin, ActiveMQ, RabbitMQ, JAXB, Hazelcast, Vert.x, Hadoop, Ignite, Redis, GraphQL, Elasticsearch.

FRONTEND:

  • Javascript, AngularJS, Angular (2,4,5,6), Ionic, Knockout.js, jQuery, JS templates, HTML5+CSS, Twitter Bootstrap

DATABASES:

  • Oracle, MySQL, MSSQL ,DB2
  • NoSQL: Apache Cassandra

SECURITY:

  • Spring Security, JAAS, Apache Shiro

OTHERS:

  • Distributed interaction: Apache ZooKeeper
  • Data Processing: Akka, Apache Kafka, Apache Spark.
  • Full-text search: Solr
  • Version control: SVN, Mercurial, Git
  • Web frameworks: Spring MVC
  • Web/app. servers: Jetty, Tomcat, JBoss
  • Infrastructure: Docker
  • Build tools: Docker, Maven, Grunt, Yarn
  • Operating systems: Unix\Linux, Windows

I'm passionate about delivery software and not only writing code. My main focus is high-performance web applications are written in Java, relational and NoSQL databases, and web technologies. Followed both Agile and waterfall methodologies participated in all the project lifecycle stages – from requirements gathering till support and tuning in Production. Have a strong passion for a high-quality solution with good architecture.

  • USD 48.00 / hr
  • USD 6100.00 / mo.
  • Ukraine

M.N.
    Senior Backend Developer
Senior Software Engineer

I'm a skilled Java developer with more than 7+ years of experience in Java enterprise web and desktop applications. I have experience with Java core desktop applications, Java web applications with the following technologies:

  • Backend: java core, JEE,JSE, JavaFX, JMS
  • Java web: Jsf, Primefaces, Wicket, Freemarker, Richfaces
  • Services: Rest, SOAP, Microservices
  • Frameworks: Spring, Hibernate, Struts, GWT, Adwords, Awl, Apache Ofbizz.
  • Servers : Jboss, Tomcat, Jetty,
  • Databases: Mysql, Postgresql , Db2,
  • Frontend: Javascript, Jquery, AngularJs, Bootstrap, Patternfly , Inspinia.
  • Test Automation : Groovy Stories, Selenium, Robot.
  • Build tools: Gradle, Maven.
  • Requirements engineering: Jama,
  • Business Rules: Groovy , XML Rules Engine ,Drools,
  • Cloud deployment: AWS

  • USD 30.00 / hr
  • USD 3800.00 / mo.
  • Romania

E.K.
    Middle QA
QA automation engineer / Web and Mobile test automation / API testing

I propose skills like UI test automation with Java+Selenium, as well as setting up cross-browser testing with BrowserStack Automate. As for API tests automation, I have experience with Java+HTTPClient+RestAssured. As for mobile tests automation, these are Java+Appium or Espresso, and next step an AWS device farm or Firebase. Also, I'm able to set up CI with Jenkins.

  • EUR 29.00 / hr
  • EUR 4600.00 / mo.
  • Ukraine

I.P.
    Senior Backend Developer
Senior Software engineer

A skilled Java developer with working experience. Proven expert skills with Java. Java frameworks - Akka, Camel, Flink, Dropwizard, Spring, Micronaut, Hibernate. In memory caching: Spring cache, EhCache, Infinispawn Databases: Postgres, Cassandra, Mongodb Messaging: ZMQ, Kaffka, ActiveMQ Containerization: Docker, Kubernetes.

Excellent in communication and teamwork. A self-motivated and hardworking person.

  • USD 30.00 / hr
  • USD 4800.00 / mo.
  • Ukraine

J.J.
    Senior Mobile Developer
Software Development

I work mainly on my own development projects. However, I occasionally work on external projects, not just for the fee, but also to maintain, improve and verify my development skills. My current passion is iPhone application programming, as well as Android and other mobile platforms.

  • USD 40.00 / hr
  • USD 6400.00 / mo.
  • Bulgaria

M.P.
    Senior Fullstack Developer
Full stack web developer with 5 years of experience

Mainly, I work on web back-end, have experience in Golang and server-side Node.js.

In the front-end and mobile development, I have experience with React + Redux and React Native for Android.

Also, I know and use the Algorithms and Data Structures: graphs, string algorithms, dynamic programming, greedy algorithms, finite automatons. Can create parsers with special grammar or do other tasks with computer science knowledge.

In the infrastructure, I have experience in Docker, Docker Swarm, Digital Ocean.

For databases, I usually use MongoDB and Redis. Also, I use embedded databases, e.g. SQLite and BoltDB.

  • USD 30.00 / hr
  • USD 4800.00 / mo.
  • Russia

A.N.
    Senior Mobile Developer
java/Kotlin developer

Experienced Java/Kotlin Developer.

Summary:

  • Over 8 years of software and webapps development;
  • Took part of lots of enterprise projects (portfolio with the selected products can be found below);
  • Fluent in Spring Boot and many related frameworks and technologies;
  • Striving for the SOLID design, but not forgetting about pragmatic approach;
  • High self-organization and discipline.

Technologies:

Java, Kotlin, Javascript, HTML, CSS, Sptring Boot, Spring Framework, RESTful services, Git, PostrgeSQL, MySQL, Hibernate, JPA, JUnit, TestNG, Mockito, Selenium Webdriver, Selenide, Jenkins, Bamboo, Azure DevOps, Docker, and many, many more.

  • USD 35.00 / hr
  • USD 5600.00 / mo.
  • Russia

M.C.
    Senior Mobile Developer
iPhone, iPad, Android solutions

I am a highly-qualified professional with a five-years experience in developing mobile applications for Android, iPhone, iPad. I have successfully launched over 50 projects in various domains and technologies, ranging from simple apps to complicated projects.

My main objective is a process-oriented approach that combines experience and creativity to find the most productive solutions and succeeding results. I am proficient enough in working in close collaborations with offshore clients as well. Flexibility and keeping ahead with technologies are my strengths, so I can guarantee the high quality of the work done.

Experience with iOS technologies:

  • Xcode, Objective-C
  • databases: CoreData( MagicalRecords including), SQLite
  • internet and server side interactions(AFNetworking library): REST API, SOAP, JSON, Parse, Google API
  • maps: iOS MapKit Framework, Google Maps API, Yandex SDK
  • social networks: Twitter API, Facebook SDK, VK SDK
  • storage: local storage, cloud storage (icloud, dropbox)
  • multimedia (photo, video, audio)
  • tools: Redmine, Git, SVN, SoapUI, DBMS (database management systems), Crashlytics
  • notification/reminders: Local Notifications / APNS,EventKitUI
  • in-app purchases
  • iAd

Experience with Android technologies:

  • Android studio, Java
  • Google Play Services and Patterns
  • Android libraries: Android Support Design Library, Android Support Library (v4, v7 appcompat, v7 cardview, v7 recyclerview), ActiveAndroid, RxJava, Retrofit, Picasso, UIL, ButterKnife, EventBus, Amazon
  • databases: Amazon DynamoDB, SQLite, Couchbase Lite Android
  • storage: local storage, cloud storage (Amazon S3, Couchbase Lite Android, dropbox)
  • multimedia (photo, video, audio)
  • tools: - Redmine, Git, SVN, SoapUI, DBMS (database management systems), Crashlytics
  • internet and server side interactions(AFNetworking library): REST API, SOAP, JSON, Parse, Local/Push-Notifications, Google API, GSON, GeoJson, Amazon SES
  • MVP
  • Google Android Maps Utils
  • in-app purchases

  • USD 40.00 / hr
  • USD 6400.00 / mo.
  • Ukraine

D.Z.
    Senior Mobile Developer
Mobile app developer with ability of backend development.

My specialization

  • Native Android (Kotlin, Java),
  • Native iOS (Swift, Objective-C),
  • Crossplatform development using Xamarin (C#, .NET) or React
  • Server-side development (Java, Spring, PHP, .NET)
  • Web (React.JS)

Technologies, languages

  • RESTfull Api, Databases, Push notifications, Maps, Pixelperfect UI, Offline, Clean architecture
  • Android: Kotlin, Java, Clean architecture, Dagger 2, RxJava2, Room, Architecture components
  • iOS: Swift, Objective-C, UIKit, CoreData, Swinject, RxSwift, Realm
  • OOP, Unit testing, MVVM, Refactoring, Design patterns, DI, Reactive Extensions
  • Crossplatform: C# (Xamarin), React.JS (Cordova)
  • Server side: Java, Kotlin, Spring boot, Spring Data, Spring Security, Spring Data Rest, SQL, .NET

Auxiliary:

  • Git (Bitbucket, GitHub, Gitlab)
  • Project Management (Jira, Trello)

  • USD 34.00 / hr
  • USD 5400.00 / mo.
  • Russia

K.P.
    Senior QA
Senior QA Engineer/Manual/Automation

I am detail oriented professional QA engineer with:

  • 5 years of experience in Manual testing
  • 2.5 years of experience in Automation testing I can test everything and able to find defects that others won’t find because I highly competent technically.

During my career I worked on various types of projects: Blockchain - based projects, Corporate Business apps, Booking systems, Travel-solution projects, E-commerce, News portals, Educational portals, Mobile games, etc.

My skills:

Manual testing:

  • Functional testing;
  • Web testing;
  • Mobile testing;
  • Domain testing;
  • E2E testing;
  • Pixel perfect testing;
  • Regression testing;
  • Cross-browser and cross-platform testing;
  • Localization testing;
  • UI/UX testing;
  • Ad-hoc and Exploratory testing;
  • TestLink, TestRail;
  • Jira, Trello.

Test Automation:

  • Git;
  • Java;
  • JS;
  • Selenium WebDriver/TestNG/Maven;
  • Selenium grid;
  • BDD/Cucumber;
  • Webdriver.io;
  • Galen Framework;
  • Intellij IDEA.

Other skills:

  • CI: Jenkins, Bamboo;
  • Agile methodologies: Scrum, Kanban;
  • Test documentation authoring;
  • Business requirements testing and clarification;
  • SQL;
  • HTML/CSS, XML, JSON;
  • Fluent English;

I can work from 7 PM till 01 AM (UTC +3).

My preference is long term-cooperation, because this helps to learn all company products and people which play important role in successful understanding and cooperation.

I work with next devices:

  • Android (5.0.1, 5.1.1, 8.1.0);
  • Laptop (Windows 7);
  • Desktop (Windows 10);
  • Laptop (MacOS Mojave);
  • iPhone 6 (iOS 12.2)

  • USD 30.00 / hr
  • USD 4800.00 / mo.
  • Belarus

R.B.
    Middle Fullstack Developer
Java Developer

Hi,

I'm a Web developer with experience of building EE applications four years. Have experience with Spring framework (spring-boot, spring-data, spring-security), Hibernate, Struts2, JSP, GWT, Maven, Gradle, Java 8, webservers (tomcat, jetty, jboss).

Also have experience with angularjs/angular and related technologies (js, typescript, npm, grunt, gulp, webpack, bower, es6, bootstrap, css3, html5).
Ready to work as soon as possible. We can discuss the details of the work.

Thank you, Roman

  • USD 30.00 / hr
  • USD 4800.00 / mo.
  • Ukraine

K.G.
    Middle Fullstack Developer
Java, Cloud, Web and Mobile expert

Java web-apps, distributed cloud apps, REST APIs, Android clients, text processing, searching, scraping and natural language processing. Strong skills and lots of experience for US$22/hour only. Core java, web frameworks (Spring Boot, Ninjaframework), native Android apps; JUnit, AssertJ, Hamcrest, REST-assured, Doctester; Cloud services: Amazon web services (AWS), Microsoft Azure, Google App Engine; SQL, MySQL, JPA, Hibernate, Cloud databases (DynamoDb, DocumentDb, CloudSql, CloudDatastore); REST, JSON, XML, HTML 5, CSS, JavaScript, TypeScript, JQuery, Bootstrap, AngularJS 2.0; Natural Language Processing and Machine Learning: Stanford NLP, OpenNLP, GATE, Jape, LingPipe, Lucene, AzureML, WordNet, Regular expressions; Text processing: Web-scraping (Selenium, jsoup), parsing, classification, translations, definitions, text-to-speach etc; Office Open XML, XMLBeans, Apache POI, pdfbox. Tools: Maven, Ant, Git, Jira, Asana, Codeship.

  • USD 32.00 / hr
  • USD 5100.00 / mo.
  • Ukraine

V.K.
    Senior Mobile Developer
Mobile (Android, iOS) developer, IoT

I believe that a clean and beautiful code is backed up not only by the technical side, but a purpose driven decision to try, challenge yourself and finally accomplish it with all due attitude, quality and creativity thus meeting clients` requirements. This character determines both my team and me.

  • USD 35.00 / hr
  • USD 5600.00 / mo.
  • Ukraine

V.B.
    Senior Fullstack Developer
Java & Javascript Developer

Web frameworks: Spring IoC / Spring Boot / Spring Data JPA / Spring JDBC Template / Spring MVC / Spring Security / JSF / Servlet

  • JQuery, D3.js, require.js, AngularJS

  • JPA/Hibernate

  • Hybris, SAP HANA

  • Tomcat, Glassfish, JBoss, Apache httpd

  • Ant, Maven (flyway, liquibase), Gradle

  • Junit, TestNG, Mockito, Arquillian

  • Apache Chemistry, LogicalDoc

  • HTTP, HTTPS, SOAP, REST Web Services

  • Swagger

  • Jersey, Jackson

  • PDF generation tools: PageFlex, BFO, Jasper Report

  • MySQL, MS SQL, PostgreSQL, Sybase

  • Eclipse, Intellij Idea

  • Jenkins, Sonar Qube (custom rules for it), Git, SVN

  • JxBrowser

  • Ubuntu, Windows Server

  • USD 35.00 / hr
  • USD 5600.00 / mo.
  • Ukraine

M.T.
    Middle Mobile Developer
Full Mobile Development, iOS, Android, Cross-Platform (Flutter)

As an expert developer with 6+ years of experience in mobile application development, one of my most-respected qualities is the ability to find solutions to any problem. In addition, I am committed to open and ongoing communication with my clients, as this is key to every successful project.

All of my projects have contributed to the growth and development of my clients’ businesses and significant increases in their profits.

My expertise includes Blockchain Technologies, Client-Server Architectures and Application Publishing.

iOS Skills: Swift 5, Objective C, RxSwift, Alamofire, Eureka, Core Data, Realm, SwiftyJSON, SwiftLint.

Android Skills: Kotlin, Java, RxJava, Dagger2, ButterKnife, LiveData, DataBinding, Room, OKHttp, Retrofit, Volley.

My advantages: • World-class quality and experience • 24/7 support • Bug-free guarantee through comprehensive testing • Timely delivery • Scalable and clean architecture • 100% money-back guarantee

  • USD 35.00 / hr
  • USD 5600.00 / mo.
  • Russia

V.K.
    Middle Mobile Developer
Android and Ruby on Rails Developer

I specialize in native Android applications and my experience in this area is 5 years. Depending on the project that needs to be done, I can work independently to complete my tasks on time, but I also enjoy brainstorming and collaborating with my colleagues.

When working on a new project, I like to speak with the client, so that I can have a clear understanding of his/her needs and vision of the project.

I have worked on projects of different sizes, stages and have performed different roles across software development industry.

I also have experience in Ruby on Rails development.

  • USD 30.00 / hr
  • USD 4800.00 / mo.
  • Ukraine

P.S.
    Senior Mobile Developer
Android Developer

Huge part of my programming experience was the Android development. I have a good knowledge of the Android SDK, an experience of adaptive UI and optimizing code to achieve a better performance.

I have experience with:

  • Java, Kotlin
  • Dependency Injection (Dagger 2)
  • Rest API (Volley, Retrofit)
  • MVP pattern
  • RxJava, RxAndroid, RxJs
  • Cloud Services (Firebase, AWS)
  • Media files playback (recording, editing, storage, and streaming)
  • Local data storage (e.g. Realm, SQL)
  • Stress testing (there are a lot devices to test apps in any version of Android, that allows me to catch all the bugs).

Prefer to have good relations with customers and also to discuss all aspects of the product.

  • USD 35.00 / hr
  • USD 5600.00 / mo.
  • Belarus

I.M.
    Senior Fullstack Developer
Senior Full Stack Developer

I'm Full Stack Developer with 7+ years experience in both backend & frontend parts. Initially my primary skill was Java, but in the past few years I have been working primarily on frontend. I always aspire to provide the best experience to customer, so you can be sure that work will be done as best as I can.

My frontend skills: Javascript, react.js, html(5), css(3), less, sass, typescript, webpack, tslint, REST, etc. My backend skills: Java, Java EE, JSP, Spring, Hibernate, Tomcat, SQL, etc. Common skills: Git, maven, gradle, jira, confluence, etc.

  • USD 38.00 / hr
  • USD 6100.00 / mo.
  • Belarus

Y.S.
    Senior Mobile Developer
Expert Native iOS, Android developer/Augmented Reality (ARKit, ARCore)

Ambitious and results-oriented Mobile Application (iOS/Android) Developer with extensive knowledge, solid technical expertise and an “always get my job done” credo. Passionate about the mobile marketing and constantly striving to learn new technologies with strong desire to innovate.

Looking to get committed and make significant contributions into a large software development company that mainly focus on creating complex and challenging mobile application solutions.

Technical Skills & Expertise:

  • iPhone iOS SDK: UI, Fragments API, Location and Sensors API, SQLite, AsyncTask, Activity Lifecycle, Services, Maps, Material Design;

  • Object-Oriented design pattern and implementation in Swift and Objective C;

  • Cocoa/Cocoa Touch, Three20, Cocos2d, Sparrow, JDK, C Standard Library;

  • Geo-location/mapping/Postgres GIS

  • Web services (REST, SOAP);

  • Java Core: io, multi-threading, collections, generics, etc

  • Android SDK: activity lifecycle, fragments api, location and sensors, content providers, services, material design, etc

Crossplatform framework: Flutter

Databases: MySQL, SQLite

Cloud services: Amazon AWS (EC2, RDS, S3), Parse

Preferred workflow: Trello/Basecamp + Git + Slack

I am easy to communicate with and can work either independently or inside a team.

  • USD 40.00 / hr
  • USD 6400.00 / mo.
  • Ukraine

R.S.
    Middle Mobile Developer
iOS Swift developer

I am expert in mobile development. I'm always attentive to details and constantly improving the product during development.

My Skills:

  • iOS: Swift, Objective C, iOS SDK, Alamofire, AFNetworking, UIKit, CoreAnimations, Realm, ResearchKit, HealthKit, Core Data
  • Android: Java, Android SDK, Bond, Retrofit, Volley, ORMLite
  • API/Services: Firebase, GoogleAnalytics, Crashlytics, Cloudinary, QuickBlox
  • Socials: Facebook, Twitter, VK

Will be happy to discuss your project.

  • USD 40.00 / hr
  • USD 6400.00 / mo.
  • Ukraine

R.G.
    Middle Mobile Developer
Android Developer with more then 2 years of commercial experience

A forward thinking developer offering more than two years of experience designing, implementing, integrating, testing and supporting Android applications for mobile and tablet devices on the Android platform.

Skills: Tools and Technologies: GraphQL, RxJava, Android SDK, Android Studio, Retrofit2, Glide, Gson, Dagger2, OSM, WebSockets, BLE, Hibernate, JPA, FlyWay, Coroutines Patterns: MVP, MVC, MVVM Languages: Java, Kotlin, C++ Frameworks: Spring, TensorFlow Data storing: MySQL, PostgreSQL, SQLite, Realm, Room Data languages: JSON, GraphQL APIs: Google APIs, Firebase, UploadCare, Youtube Soft Skills: Communications, teamwork, organization Miscellaneous: RESTful Web Services, HTML, CSS, Bootstrap

Highlights:

  • Created a lot of user-friendly, aesthetically pleasing and fully functional applications for Android
  • Proficient in object-oriented design, data structures, problem solving, complexity analysis, and debugging
  • Developing strong backend side which can be used for all mobile platforms
  • Have strong understanding of material guidelines, client - server architecture principles, mobile development life-cycle
  • Always using Android best practices and adding multiple screen dimensions support

My purpose is to help you realize your ideas and bring your vision to the mobile market. Also it involves building an app from scratch or updating existing apps, building strong restful apis, adding multiple screen support, etc.

  • USD 35.00 / hr
  • USD 5600.00 / mo.
  • Ukraine

K.K.
    Senior Mobile Developer
CEO/Fullstack Senior iOS/Android Mobile Developer

✅ Over 5+ years of the experience in the domain; ✅ 30+ successfully developed applications;

Skill Set (Android and iOS) :

  • Android SDK, Java, iOS 8,9, Objective C, Swift
  • Google Maps, OSM, GPS Location, Map Clustering, Place API, Navigation
  • Video streaming (RTSP/RTMP)
  • Push notification (GCM)
  • Social framework such as Facebook, Twitter, Google+ and Instagram
  • Integration with Web Service( XML, JSON, REST/SOAP)
  • Parse
  • Bar-code/QR Code scanner
  • Database Management( SQLite ,CoreData )
  • In App Purchase
    -Augmented reality (location based)

If you work with me, you would get a good adviser as well as a skilled developer. Robust, highly-readable and easily maintainable code is guaranteed!

  • USD 40.00 / hr
  • USD 6400.00 / mo.
  • Ukraine

A.M.
    Senior Mobile Developer
Android developer

Within 4 years I'm involved in Android development. One of my main skills is to create professional, responsive, intuitive mobile applications for Android.

I know how to create quality android apps. I am responsible and always in touch with my clients. These stories when a freelancer hasn't communicated with a customer for several days are not about me. Also, I complete tasks on time because I understand that it is important for you.

I am a responsible worker. I do my work with the full dedication and strive for excellent quality. From my side, I guarantee high-quality work while doing it as fast as possible. I am available to start work immediately and up to 40 hours per week.

Technical Skill Set:

  • Good understanding of Core Java, Kotlin concepts (oops, collections and multithreading)
  • Experience working with different versions of Android, and how to deal with different screen sizes
  • Familiarity with RESTful APIs to connect Android applications to back-end services (Retrofit, OkHttp, Websockets)
  • Experience with offline database storage (Sqlite, Realm)
  • Knowledge of the open-source Android ecosystem and the libraries available for common tasks. Android SDK (Fragment API, Bluetooth/BLE API, Camera API, Service API, BroadcastReceiver, Job Scheduler API)
  • Android Testing (Robolectric, Mockito, Espresso, UI Automator, Junit, Hamcrest)
  • Image processing (Picasso, Glide, Fresco)
  • Google Play Services (Maps/Places, Location, GCM, AdMob/DFP, Drive, Face Detection)
  • Firebase (Auth, Database, Notifications, Analytics, Cloud Functions, Crash Reporting etc.)
  • Social networks (Facebook SDK, Twitter SDK, Instagram SDK, Vkontakte SDK)
  • Proficient understanding of code versioning tools, such as Git
  • Strong knowledge of Android UI design principles, patterns, and best practices (Support libraries, Custom views, Custom themes/styles)
  • Ability to understand business requirements and translate them into technical requirements.

Looking forward to work with you!

  • USD 40.00 / hr
  • USD 6400.00 / mo.
  • Belarus

V.B.
    Middle Mobile Developer
I'm an Android (Java) developer.

I have most 3.5 years of experience in mobile development. I can implement every part of Android development from idea to publishing in Google Play. Let me describe my skills:

Android:

  • Native Android app development
  • Java, Android Studio, Gradle, Proguard
  • Android SDK
  • UI and UX, Material Design, fast UI prototyping (Figma, Sketch, Gimp)
  • Mobile advertising (Admob, Amazon, Appodeal, Facebook, Mopub, Chartboost, Unity Ads, Yandex and other)
  • Firebase (Events, Push Notifications, Crashlytics, Performance monitoring, In-App Messaging, Remote Config)
  • Bigquery (report in datastudio)
  • Social integration (Facebook, Twitter)
  • Cloud storage integration (Google Drive, Dropbox, OneDrive)
  • Fragments and broadcast receivers
  • Data offline usage (SQLite, Realm)
  • Payments (Google Payments, Revenuecat SDK)
  • GPS, Maps
  • Memory leaks
  • Multiple devices (and screen sizes/resolutions) support
  • json/protobuf

Other skills:

  • English skills (talk and write)
  • Jira
  • Agile Methodologies
  • Git, Gitflow

Libraries: Retrofit 2, Glide, ButterKnife, LeakCanary, Robolectric, EventBus, Picasso and other

If you can't see here something that you need, then it doesn't mean that I can't handle it, just ask me.

  • USD 35.00 / hr
  • USD 5600.00 / mo.
  • Ukraine

Y.M.
    Senior Mobile Developer
Android App Developer Java SE Developer

I'm a senior Android App developer with extensive experience in building high quality Android Apps. My main ability is to create a professional, responsive, intuitive and successful mobile applications for Android . I will be happy to assist you in the successful implementation of your projects in the shortest possible time. I'm ready to work to work 24/7, full time or part time.

  • USD 35.00 / hr
  • USD 5600.00 / mo.
  • Belarus

V.P.
    Senior Mobile Developer
Senior/Lead Android Engineer

I have solid experience with Android SDK, creation of client-server applications, HTTP REST protocol, Google Play Services and other related fields of Android apps development.

Also have experience with dozens of third party development and project management tools: Jira, Fabric, Git/SVN

Experience with third parties APIs: Foursquare, Facebook, Twitter

Experience in creating custom views / view components for tablet/phones

  • USD 40.00 / hr
  • USD 6400.00 / mo.
  • Ukraine

D.S.
    Senior Mobile Developer
Android | iOS Developer

For the last 7 years my primary field of work is a Mobile Development (Android and iOS), and in general I have more than 10 years of experience in software development for different platforms. As a responsible person, skilled and ambitious professional I would like to use all my knowledge, experience and strong technical background to help you bring your ideas to Mobile Platforms. I know how to work hard, learn quick, and be a part of a team. Also, in software development it is always important be open and honest and I am ready for that.

Main skills:

  • Native Android app development
  • Native iOS app development
  • Java, Android Studio, Maven, gradle
  • Xcode, Swift, Cocoapods, Objective-c
  • UI and UX, Material Design, fast UI prototyping
  • Custom UI of any complexity (custom views, animations, themes)
  • Flawless and pixel perfect UI
  • Multiple devices (and screen sizes/resolutions) support

List of different third party technologies I am familiar with:

  • Push Notification (Firebase Cloud Messaging )
  • Social Network Integration (Facebook SDK, Twitter)
  • Payments (Stripe SDK)
  • Online Data Storage (Amazon AS3 SDK)
  • Local Database Storage (SQLite,including SQLCipher, Realm)
  • Mobile Analytic (Fabric: Crashlytics & Events)
  • Network interaction (REST, Retrofit, Alamofire, Json, SOAP, GET/POST data,)
  • Hardware (Camera, sensors)
  • Google Tesseract OCR system Integration
  • Third-party UI libraries
  • GPS, Maps
  • Multi-threading
  • Email and SMS sending
  • Video and Audio streaming
  • Android NDK
  • C / C++
  • PHP
  • Git, Gitflow
  • Qt, MFC

If you can't see here something that you need, then it doesn't mean that I can't handle it, it means I had too much to fit in! Just ask me.

  • USD 40.00 / hr
  • USD 6400.00 / mo.
  • Russia

A.S.
    Senior Mobile Developer
Senior Android Developer

I develop mobile apps since 2014, which you can see in the portfolio below.

My projects vary from GPS fitness tracking apps to accounting platforms, and also include popular titles like Los Angeles Film Festival client app.

I either use design assets from an in-house designer or create them myself using mobile design guidelines.

Usually, the collaboration starts with a video call, where we can discuss project details and their implementation, after which a client can request an estimate and receive daily updates about the progress.

  • USD 40.00 / hr
  • USD 6400.00 / mo.
  • Ukraine

P.H.
    Senior Backend Developer
Java/Kotlin Back-end Developer

A skilled, knowledgeable and qualified specialist with a Bachelor's degree in Software Engineering. I have an extensive background in computer programming.

I focus mostly on Java technologies such as Spring Framework, Hibernate, Gradle, etc. In past, I've developed enterprise-level eHealth applications and then I switched to freelancing and work remotely now. I prefer to work with adequate, serious, and honest clients.

It is my pleasure to help people implement their ideas. I would be glad if my skills and experience might be useful to you. And at the same time, I am opened for new technologies, tools and methodologies.

  • USD 39.00 / hr
  • USD 6200.00 / mo.
  • Belarus

O.H.
    Middle Mobile Developer
Quality-Focused iOS/Android Developer

I started out in IT as a QA specialist working on various web and mobile projects. Later on I learned and got hands on experience in Java and Objective-C. At first I use those primary for testing automation, but then I realized that I want to move forward and become a mobile developer.

During the years of my professional career I studied a lot about software quality and most common mistakes that developers usually do. This allows me to produce more accurate estimates for new similar tasks, and leverage my own solutions to make those best suited for end customers.

I have 2+ years of programming experience and took part in dozens of projects as a full stack mobile developer.

My tech stack includes:

  • Android development (Kotlin/Java)
  • iOS platform development (Swift/Objective-C)
  • creating cross-platform apps with Flutter
  • Cocoa/CocoaTouch, CoreData, UIKit, CoreAnimation, CoreGraphics, CoreLocation, Security framework, etc
  • Apple Watch apps, Augmented reality (ARKit/ARCore)
  • moderate experience in HTML5/CSS3, JavaScript
  • 3rd party services integration (RESTful, Websockets)
  • FireBase, Parse, AWS
  • Git, Trello, Asana, Jira, Slack, etc

  • USD 37.00 / hr
  • USD 5900.00 / mo.
  • Ukraine

M.S.
    Senior Mobile Developer
Web and mobile developer (iOS, Android, PHP, Java, Angular, Node)

I have been living custom software development for over 15 years. By now, I have developed web and mobile applications for such brands as Western Union, Channel, Audi, Volkswagen, Sainsbury's, and other. Several apps reached top and #1 positions in app stores in various categories.

To implement apps from idea to the store, I collaborate with my team of talented iOS and Android developers, front-end and back-end engineers, UI/UX designers, business analysts, and testers.

Advantages for you: – full-cycle software development partner (UI design, development, project management, testing) – 12-month warranty period (no kidding!) – easy to communicate

Key skills: – Front-end – Angular, React, JavaScript, Vue.js, HTML5, TypeScript – Back-end – Java EE, PHP, Node.js, Laravel, Yii2 – Mobile native – iOS, Android, Swift, Objective-C, Java, Kotlin – Mobile cross-platform – React Native, NativeScript, Electron – Databases – PostgreSQL, MySQL, MongoDB, Oracle, Redis, SQLite

Specialize in FinTech, InsureTech, e-health apps, Uber-like apps, social networking apps, geofencing apps.

I look forward to working on your project!

  • USD 40.00 / hr
  • USD 6400.00 / mo.
  • Russia

K.K.
    Senior QA
Senior IT Software Engineer \ Quality Assurance | 6+ Years Experience

I'm experiencing with emphasis on Quality Assurance with Web based, Client/Server and Standalone applications with strong businesses and technical knowledge. Well versed with QA standards and methodologies, hands-on knowledge of all phases of the Software Development Life Cycle (SDLC).

I have some facts that will help you to stop the search and hire the specialist you need: • 6 years experience of Quality Assurance;
• Adjust and configuration of a various emulators for the test systems; • Performed test estimation efforts; • USA VISA(B1 - Business type, exp. 13.08.2020)

TECHNICAL SKILLS

Test Techics: Functional Integration Regression Performance User Acceptance testing UI testing API testing Browser compatibility testing Application Security testing

Web Development: HTML5 JavaScript

System & Networking: Git Web Services CI/CD (Jenkins, TeamCity) Unix/Linux Systems Networks Administration Virtualization XML JSON REST API HTTP SFTP SSH

IT Methodologies: Agile SCRUM Waterfall Test Driven Development Behavior Driven Development

Software Development: Java (able to read a code) Python (able to read a code)

Databases: PostgreSQL MySQL DB2

Languages: English (Professional) Russian (Native)

  • USD 27.00 / hr
  • USD 4300.00 / mo.
  • Russia

I.G.
    Senior QA
ISTQB Certified/QA Engineer(automation/test analyst/manual testing)

I am hard working person ,very attentive to details , love this job because we provide quality to the customers. Have more then 7 years of experience .

  • Experienced in vast variety of testing methodologies and techniques , in project measurements(testing metrics),evolving test strategy , writing test plans and test scenarios . -Experienced in UX / Acceptance Testing
  • Experienced in api testing with Postman / Runscope
  • Experienced in writing automation scripts for UI regression testing (Selenium/Watir + Java/Ruby/Python) /Protractor / GhostInspector -Experienced in performance/load testing with JMeter and LoadRunner . -Experienced in using different bug tracking tools JIRA , Bugzilla , Mantis and etc.
  • Experienced in documentation creation with Confluence , TestRail PERSONAL QUALITIES : Hardworking , analytic mentality , lateral thinking, self-sufficient , goal-oriented , good communication skills , energetic , team player.

  • USD 37.00 / hr
  • USD 5900.00 / mo.
  • Moldova

D.S.
    Middle QA
QA Specialist Manual / Automated

Detail-oriented and seasoned professional with more than six years of experience in software quality assurance, testing, validation, and verification. Well-versed in reviewing software requirement specifications, as well as identifying, creating, and implementing test scenarios, case, and scripts for various projects. Proficient with regression, negative, integration, black box, functional, system, back-end, smoke, static, end-to-end, usability, compatibility, and user acceptance testing. Expert at simultaneously managing multiple projects while meeting commitments and strict deadlines. Equipped with articulate communication and interpersonal skills in building positive work relationships with clients and professionals of all levels.

• Strong testing experience in automation testing, regression testing, user acceptance testing, functional testing, performance testing, integration testing and load testing • Involve in entire QA process including defining, designing, creating and executing test cases • Experienced in test result and defect analysis • Well versed with QA methodology and QA process to ensure high quality product • Proven hands-on experience in testing web-based applications • Creative problem solver with advanced analytical and planning skills • Exceptionally high attention to details • Open to new challenges and opportunities, fast learner, self-motivate, and hardworking

Skills

Automated testing: Selenium (including Page Object pattern), Capybara-WebKit, Codeception, Protractor, Webium

Version Control: Git, Mercurial, SVN

Mobile testing: Appium automated testing framework, iOS, Android, BrowserStack, SauceLabs

Bugs tracking systems: Jira, PivotalTracker, Trello, BugZilla, Radmine, Asana etc

BDD frameworks: Cucumber, Lettuce

OSs: MacOSx, Windows, Linux

CI: Jenkins, Bamboo, TeamCity, CircleCI

Test Documentation: Test Plan, Test Cases, Check Lists, Test Matrices. TestRails

Programming langs and etc: Ruby, PHP, JS, Java, C#, Python, CSS, HTML, Xpath

  • USD 33.00 / hr
  • USD 5300.00 / mo.
  • Ukraine

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