Top Upwork Freelancers

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  1. Igor Khvostenkov

    Igor Khvostenkov

    Java Developer / Test Automation Engineer

    Germany - Tests: 5

    I have more than 10 years of experience in Software Developing and Testing. Skills: - Java: SE, Spring - DB: DerbyDB, MSSQL, Oracle, Times Ten - Operational systems: Ubuntu Linux, Unix (Solaris 5.8, 5.10), Windows like - Apache Tools: HTTP Server, Tomcat, Maven, James - Scripts: Java Script, SH/KSH/Bash - Automated testing: Selenium/WEB-Driver, JMeter - Other: XML, Web Services, HTML - Methodology of product development and testing, bug tracking systems

    $22.22 /hr
    5,672 hours
    4.98
  2. Roman S.

    Roman S.

    Java/Android Software Engineer

    Ukraine - Tests: 3

    Over the last 5 years I've developed a wide range of Android apps. Currently participates in the development of applications for the Android and BlackBerry mobile platforms. Successfully participated in the design and development of many small-sized, medium and large projects. Apart from development, was also responsible for project management, in particular these were healthcare, entertainment, and educational development projects.

    $20.00 /hr
    170 hours
    5.00
  3. Vadim S.

    Vadim S.

    Experienced Web Developer, skilled at PHP/MySQL/JavaScript/HTML/CSS

    Ukraine - Tests: 14 - Portfolio: 6

    See http://www.skorba.pp.ua/en/ for more details OS, software, environment: Excellent knowledge of Windows and Unix systems at the administrator level. Knowledge and experience in setting up and implementation of application software. Main working bunch — LAMP. Expertise in configuration, support, optimization of web servers and associated environments, using memcached, nginx, HAProxy, Varnish, scribe. Development Experience: 9-year experience of web development in PHP (Java, Python), profound understanding of OOP and MVC model using PHP-frameworks (ZendFramework, CodeIgniter, Symfony, CakePHP, Yii) for its implementation. Experience in designing high-loaded systems, their object model and database structure, using ER and UML-diagrams, documentation and the subsequent successful implementation, upgrade and support. Technologies: Proficient in W3C valid XHTML layout (and solving problems of incorrect display in different browsers), CSS, JavaScript, using various frameworks (JQuery, ExtJs, YUI, MooTools) to implement a dynamic user-friendly interface. Understanding and applying AJAX-technologies, SOAP/REST data exchange between web services, implementation of web services. Instruments: Use — Doctrine, Propel as ORM, as well as the Sphinx for the implementation of relevant and rapid search. Experience in applying for the template - XSLT, Smarty, in-line PHP, LESS. Using Mantis, dotProject, Trello, Trac, Jira, Basecamp, Assembla, Unffudle as a bugtracker for the project management and monitoring tasks. Version control — Mercurial, Git, CVS, SVN. IDE — Eclipse, NetBeans, ZendStudio. Apache, nginx, lighttpd as a web servers, MySQL, MSSQL, PgSQL, MongoDB, memcache, redis - as data storage and cache. Used flexible Agile principles (Scrum, Kanban) for team development and management.

    $55.56 /hr
    673 hours
    5.00
  4. Gabriel Paunescu

    Gabriel Paunescu

    JEE, Web Developer

    Romania

    I've been working for the last 16 years in several positions like developer, team leader, analyst, project manager, software architect. I made analysis using UML. Based on my experience, so far, I'm able to offer complete software development solutions, from the analysis, coding and implementation, ending with testing and installations. I start each collaboration with the idea that a further upgrading is very possible. Each software development service will be developed using scalable, extendable architectures that will allow us to add new functionality with a minimum amount of effort and resources. I'm perfectly capable of providing consulting services on: - Analysis - Architectures - JEE (EJB, JMS, Web Services, JDBC, JPA, JSF, JSP, Servlet), Spring, Struts, Hibernate - 3-tier solutions - SQL databases (design & implementation) - MS SQL Server, Oracle, DB2, PostgreSQL, MySQL

    $23.00 /hr
    262 hours
    4.85
  5. Ryhor Supruniuk

    Ryhor Supruniuk

    Software and Mobile Developer

    Belarus - Tests: 1

    Highly motivated developer with broad understanding of software development workflow. Have broad experience in different areas begining from mobile apps and ending by business solutions for different platforms. Also I've experience development trading algorithms that were profitable. Programmed and modified trading systems for the different trading platforms with API & FIX protocols. Created both automated and semi-automated trading systems, custom indicators, and risk management tools. Platforms: iOS, Windows, OS X, Linux, FreeBSD Languages: Objective-C, C#, Ruby on Rails, Python, SQL, Java, Easy Language, Metatrader, WealthLab, Delphi Tools: Xcode, Intellij Idea, Pycharm, Visual Studio, Embarcadero, Visio, Multicharts, Wealth-Lab, Tradestation, Metatrader iOS: CoreData, CoreLocation, Foundation, MapKit, UIKit, AFNetworking, MKStoreKit, Socia, CorePlot, CocoaPods, Multithreading, Networking,RestKit, etc.

    $13.94 /hr
    33 hours
    5.00
  6. Anton Chigin

    Anton Chigin

    software engineer

    Russia - Tests: 7

    Looking for an exciting and challenging job, where my skills and knowledge can be use and enhanced to the fullest. I prefer C/C++ as my basic languages, however I also had an experience in other languages. I have strong knowledge of algorithms and data structures. I have an experince in designing kernel modules and drivers for both Windows and Linux platforms. My extensive problem-solving background enables me to understand and relate to clients’ requirements and expectations. I always provide End-to-End solution that meets all the clients' requirements.

    $22.22 /hr
    322 hours
    5.00
  7. Plamen D.

    Plamen D.

    .NET & database developer

    Bulgaria - Tests: 4 - Portfolio: 3

    Certified professional web developer with 5+ year experience creating business applications. Quality and correctness - these describe my work best. I can create or modify applications for you in the following technologies: - .NET (such as ASP.NET, MVC3, ADO.NET, Web Services, Windows Communication Foundation, Entity Framework, LINQ) - SQL Server 2005 - 2008 programming (stored procedures, functions, triggers) - Front-end development with jQuery and many other libraries for complete application

    Groups: Microsoft Certified Professionals

    $15.00 /hr
    136 hours
    4.73
  8. Sergey Kryachko

    Sergey Kryachko

    Embedded Software Developer

    Sweden - Tests: 5

    13+ years experience in software development for embedded systems, Automatic Control Systems, Mobile telephony. Deep knowledge of Real Time Operation Systems (RTOS), low level programming, serial communications and protocols, battery management, fuel gauge and charging area. Extensive experience developing in QNX, VxWorks, Linux/Android, RTL-ARM, OSE, Windows XP/Mobile/CE and DOS environments.

    $17.78 /hr
    172 hours
    4.10
  9. Shamandura C.

    Shamandura C.

    Game Developer

    Philippines - Tests: 1

    I seek for opportunities to develop fun and exciting games and hone my programming, math, and physics skills in the process. I have a broad experience with Unity3D and have worked with Unigine as well. I was involved in MMORPG projects and wrote game flow, UI, networking, physics code as well as some shaders. I now work with a team developing mobile games for IOS. I am a front end developer but engage in back end code writing and maintenance as needed. I have used the following tools and languages: Unity3D, Unigine, UnityScript, UnigineScript, C++, Photon, Badumna, XM, SQL, PHP If you think I have the skills you need, please feel free to contact me.

    $30.00 /hr
    424 hours
    4.80
  10. Vladimir N.

    Vladimir N.

    C++, C# Developer with 8 years experience

    Germany - Tests: 12 - Portfolio: 3

    Most part of my 6+ years experience is connected to development of desktop applications in C++ and C#. I developed UI's, databases, application level protocols, windows services, algorithms, etc. My code is well structured, reliable and clear. Good software architecture has always been in focus as well as quality and stability of software product. I always backed up my code with well developed unit tests and accurately documented test plan. In team work I give priority to transparency, openness to new ideas and friendly atmosphere in the team.

    $33.33 /hr
    175 hours
    4.98