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Structured Query Language SQL is a programming language designed for managing data in relational database management systems RDBMS.

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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

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

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

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

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

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

S.S.
    Senior Backend Developer
Microsoft Certified Professional Developer - Web Developer 4

Microsoft® Certified Professional Developer - Web Developer 4 ASP.NET / ASP.NET MVC / Windows Forms / WPF

I have a solid experience in creating web applications, web services, desktop applications and crawlers for a any kind of web sites. Last few years I'm mainly concentrated on Project Management, Team Leading and my main goal is reduce the risk and deliver the projects on time and with a high quality.

  • USD 48.00 / hr
  • USD 7700.00 / mo.
  • Bulgaria

S.M.
    Senior Fullstack Developer
Developer

16 years professional еxperience in programming.

What I am good at? Full stack (front end, back end, database). Algorithms. Bug-free coding. Rapid developing. When I get a project I like to finish it fast. And bug free.

What I think you may like? I can build complete solutions which includes desktop applications, responsive web-accessed forms, web services (REST, SOAP), the entire database required for the application, manage IIS or Apache.

I have much experience with external api's, services and infrastructure providers like Amazon product api, eBay's api, Stripe's api, Azure, Amazon EC2, and many more.

Technologies and skills I have used more than 5 years and I am good at: C#.NET, .net Core, Winforms, WCF, ASP.net, ado.net, SOAP and REST services Pascal, Delphi, C++ WinAPI, Winsock 2.0, Multithreading and Thread Synchronization, GDI, GDI+

HTLM, XHTML, XML, Javascript, jQuery Databases, SQL Server, MySql, SQLite Algorithms - Searching, Sorting, Merging, Trees, Graphs, Queues, Hash Tables OOP, Design patterns, Math

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

S.H.
    Senior Backend Developer
.NET Web/Desktop Developer

I'm a professional experienced .NET developer for 2 years. I have a strong knowledge of OOP (Object-Oriented Programming) and Desktop and Web development using the .NET platform. Also, I have the ability to high-quality work and a huge motivation to work on interesting projects

Technology stack:

  • C#
  • WPF/WinForms
  • ASP.NET (MVC, Web API, Core)
  • SQL (SQL Server)
  • Entity Framework
  • CAD API (Revit, Navisworks, AutoCAD, Plant3d, Civil3d, Rhino)
  • Git (GitHub, GitLab)
  • CI/CD (GitLab Pipelines)

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

K.Z.
    Senior Backend Developer
.NET and SQL Developer

Over the last 10+++ years I have developed a wide range of Windows applications using .net-framework C#, SQL, including software for Ltd/PLC companies and open source community. I am seeking opportunities to become a part of professional developer team for part-time work and own professional growth.

Deep knowledge of technology, experience of 10+ years:

  • .NET Framework. Desktop C#, WPF/WinForms, WCF, EF, all this stuff.
  • XML/XSD/XSLT. XML-processing, data analysis, convert and exchange.
  • T-SQL/MS SQL Server (querying, database design, programming).

Working with MS Visual Studio, MS SQL Server Management Studio, TFS, Git

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

A.G.
    Senior Fullstack Developer
Full stack developer: .NET & C#, SQL back end, JavaScript front end.

My valuable customers about me:

  • "Alex is an outstanding contractor. I can't say enough good things about him and his work. He has great attention to detail and can handle incredibly complex projects with ease. He is always available and responsive, and his work quality is second-to-none. I rate him above all other contractors I have ever worked with, whether on oDesk or not, and whether in the US or not."
  • "Outstanding in every respect. Job completed to exact specification with 100% accuracy. Superior attention to detail. Excellent English. Thank you, Alex, for a job well done."

Over the last 10 years I have developed a websites for various companies using:ASP (VBScript), ASP.NET, C#, VB.NET, Transact SQL and stored procedures for MS SQL Server (2000, 2005, 2008), MS SQL Reporting Services, HTML, DHTML, JavaScript, third party libraries like Syncfusion and Telerik. Also I have experience of web-services, desktop applications and web scrapers (to copy data from web-sites to database or Excel spreadsheet) development. My core competence lies in development sites from scratch, re-factoring existing software, re-writing ASP sites to ASP.NET ones. I am seeking opportunities to develop websites or desktop applications for you or your business. Legacy systems re-writing and/or maintenance are possible too.

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

A.Z.
    Middle Fullstack Developer
Fullstack Web Developer

backend:

  • C#, F#.
  • .net, mono.
  • asp.net mvc, web api, nancyfx, servicestack, suave.
  • entity, nhibernate, ormlite
  • ms orleans, akka.net.

frontend:

  • js 6, sass, html5.
  • react, angular, bootstrap.
  • webpack, gulp and etc...

storages & cloud services:

  • ms sql, postgres
  • mongo
  • azure services (message queue, table storages and etc.)
  • google drive api
  • amazone ec2.

continous integration:

  • unit/integration tests
  • TeamCity, Octopus deploy
  • Appveyor

vcs:

  • git, svn , tfs

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

P.P.
    Middle Fullstack Developer
SQL | ASP.NET Core | Javascript

Passionate SQL Developer with 4y+ experience. I'd be glad to help you.

What I can do:

  • web-development (ASP.NET Core, JavaScript, JQuery, Ajax, HTML/CSS);
  • create complex queries, subqueries (MS Server, MySQL, Oracle, Access etc);
  • query optimization;
  • develop stored procedures, functions, triggers (T-SQL, PL/SQL etc);
  • develop entity-relation diagrams (ERD) (tools: PowerDesigner, ER studio, draw.io);
  • remove duplicates from database;
  • create all necessary views, indexes;
  • create reports (tools: SSRS, JasperStudio, Crystal Reports);
  • data visualization (Tableau);
  • design Data WareHouse;
  • develop ETL process;
  • upload data from different sources (Excel, CSV, another databases);
  • database integration with another systems;
  • database testing;
  • VBA;

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

I.V.
    Senior Backend Developer
Senior .Net and Database Developer

I'm a senior .Net and Database developer with extensive experience in building high quality sites.

My areas of expertise include:

  • C#, Python
  • ASP.NET MVC, .NET Core
  • WPF / WinForms
  • SQLServer, MySQl, PostgreSQL, MongoDb, CouchDb
  • JS, Angular (1, 1.5, 2, 4, 5, 6), TypeScript
  • Azure (+ Web Jobs)

My experiences range from building responsive mobile sites that work well cross-browser to building scalable sites for the financial services industry. I like working on projects with a team that cares about creating beautiful and usable interfaces.

It's important to me to build long term relationships with clients, so I'm primarily looking for long term projects.

I'm flexible with my working hours and am happy to work closely with any existing freelancers you work with.

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

A.S.
    Senior Backend Developer
Delphi/Pascal/C/C++ developer

Almost 20 years I work programmer and system administrator. My main tool all these years - Delphi. I have a lot of projects in my portfolio: system applications and utilities, multitasking applications, mobile development for iOS and Android.

Very good knowledge of these features:

  • delphi: from borland delphi 5 to embarcadero RAD 10.3 Rio
  • oracle, MS SQL, firebird, MySQL databases
  • c/c++ applications
  • VBA scripting, VB.NET apps

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

I.M.
    Senior Backend Developer
Qt/C++ developer

Software developer. Experience in Windows, DOS, Solaris. Languages: C, C++, C#, Java, JavaScript, QML, ...

During the last 7 years main tool is Qt.

  • 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

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

A.P.
    Senior Mobile Developer
Senior Windows developer (Mobile/Desktop)

I am developer of desktop/mobile apps (Windows/Android). I have more 10 years of programming experience

I use the following technology stacks:

  1. C# (Visual Studio 2010 - 2017) (UWP/WPF/Xamarin)

    • Entity Framework
    • NLog
    • MetroLog
    • SQLite
    • Dryioc
    • HockeyApp
    • NFC
    • MvvmCross
  2. Object pascal (Delphi 5 - XE5, Tokyo 10.2)

  3. InstallShield, NSIS

  4. SQL (T-SQL); Ms Sql Server 2000 - 2017, MS Access, SQLite, MySQL, Postgresql (9-11)

  5. Docker, Amazon web services (AWS)

  6. Continuous integration (Atlassian Bamboo/ CircleCI)

Patterns:

  • MVC
  • MVVM

Market:

  • Google Play‎
  • Windows store

I have experience a development of mobile apps for Windows Phone (8.1 - 10), UWP, Android and well as extensive experience with Ms SQL Server 2000 - 2017, MS Access, SQLite, MySQL, Postgresql + experience develop app for device Orderman Sol

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

A.R.
    Senior QA
Senior QA Engineer

  • Expert in manual testing (functional, smoke, regression, integration, UI/UX) and test design (Creation of test suites/scenarios), web testing, mobile testing,
  • Middle in SoapUI
  • Middle in game testing, auto-testing (Selenium+Maven), Javascript, CSS, HTML
  • Beginner in Java, C++, PHP

I am a QA Engineer experienced in analysis and investigation of bugs, review of Requirement Specifications. Using JIRA and Yodiz as bug tracking systems, also using Windows and Linux with many browsers for web testing.

Qualification includes​ 5+ years experience in QA.

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

K.P.
    Senior QA
Senior QA Engineer

More than 6 years in testing (Web,desktop,mobile applications)

Testing activities: • Experience in Scrum and Kanban as software development methodologies; • Creating BDD scenarios • Test documentation creation (test plan, checklist, test cases, bug reports, test strategy) • Performance testing, Api testing • Experience in working as Scrum Master • Suggesting improvement options • Cross-browser testing (Firefox, IE, Chrome, Opera, Safari) • Reviewing user interface

Have all coverage of devices (phones (Android and iOS) and tablets (Android and iOS)) Bug tracking systems - Jira, Redmine, Bugzilla, Mantis, Trello

Tools:

  • Jmeter
  • Postman
  • Jenkins, TeamCity
  • SpecFlow
  • Cucumber

  • USD 26.00 / hr
  • USD 4200.00 / mo.
  • Ukraine

A.M.
    Senior QA
Senior QA tester

I'm an experienced QA Engineer with 5+ years of experience in Web and Software QA testing.

It is my passion to test applications and help customers to make their product bug free. I have tested business websites, E-commerce portals, Window applications and lot more.

My Manual Testing Skills :

1 - Test Planning 2 - Test Case Writing 3 - Test Scenarios Writing 4 - Test Summary Reports 5 - Use cases 6 - Bug Reporting 7 - Cross Browser Testing 8 - Pilot Testing 9 - API Testing (Automation API on JMeter)

I do Testings :

1 - Functional Testing 2 - NonFunctional Testing 3 - UI Testing 4 - Smoke Testing 5 - Regression Testing 6 - Integration Testing

Bug Tracking Systems : Jira, Mantis, RedMine.

I work at very reasonable rate and provide best software testing services in a way like :

1 - Write test cases , Execute Test cases 2 - Daily bug reporting 3 - Regression testing bases on developer solve bugs or new enhancement implements. 4 - I provide high quality QA services to make your product 100% user friendly and error free.

Always looking for opportunity to work for different people to make happy them by QA services.

Web-services testing (JMeter). Writing SQL requests for search and preparation of test data; Skills&Experience: - manual testing; - web projects testing; - desktop projects testing; - mobile applications testing; - web services testing; - SQL, WordPress

  • USD 22.00 / hr
  • USD 3500.00 / mo.
  • Ukraine

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