Top Upwork Freelancers

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  1. Rudi Grinberg

    Rudi Grinberg

    Software Developer

    Canada - Last active: 6 months ago - Tests: 5

    Hello, I'm a passionate software developer specializing in functional programming in OCaml, Haskell, Erlang and the scripting languages Perl, Python, Ruby, and JavaScript. I always stay up to date the latest methodologies and best practices and deliver code quality of the highest class. I've been programming for a long time as a hobby (10+ years) and more recently (3+ years), as a professional. I am confident that I can complete any task that is thrown at me and I guarantee satisfaction with any code that I write. If you care about the maintainability and extensibility of your project then I am a great candidate for your project. Check out my github profile to see what I'm working on in my spare time: https://github.com/rgrinberg I've recently started a tech blog at http://rgrinberg.com Any comments or feedback is most welcome!

    $59.99 /hr
    891 hours
    4.99
  2. Shamandura C.

    Shamandura C.

    Game Developer

    Philippines - Last active: 01/12/2014 - 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
  3. Mainul Islam

    Mainul Islam

    Enterprise Java/JEE Architect

    Bangladesh - Last active: 03/20/2013 - Tests: 12 - Portfolio: 3

    I have been designing and developing enterprise business application using Java EE, Spring, Hibernate, GWT, JSP, JSF, Oracle/MySQL, PHP, JavaScript, Eclipse RCP etc for more than 10 years. I have worked in desktop application, server side programming and web technologies. I worked as individual and also acted as team manager. I am looking for opportunities where I can leverage my experience and knowledge to deliver best quality software in terms of design, code and usability.

    $33.33 /hr
    128 hours
    5.00
  4. Mariusz Z.

    Mariusz Z.

    Penetration Tester, Linux/UNIX Security Admin,Intrusion Analyst, CISSP

    Poland - Last active: 3 months ago - Tests: 9 - Portfolio: 1

    I'm Linux Security Administrator & Web Application Penetration Tester with 8 years of experience in the IT field. I'm CISSP (ID# 478556) and OWASP member. My expertise ranges from designing, building secure & robust systems to analysis of subtle software security flaws. I can help you with: - thoroughly security testing your web application (black-box and/or white-box tests) and helping in mitigating detected vulnerabilities - analyzing and assessing vulnerabilities in your application's underlying IT infrastructure - security hardening Linux/UNIX servers/clusters - recommending solutions and best practices on how to design and maintain secure AWS infrastructures - responding to security incident in Linux/UNIX environment, helping in recovery process (rootkit detection, malware removal, etc.)

    $19.00 /hr
    123 hours
    4.79
  5. Ivan L.

    Ivan L.

    Senior Developer (PHP \ SOAP \ WSDL experienced)

    Russia - Last active: 5 months ago - Tests: 3 - Portfolio: 4

    I am a professional in the field of web development with extensive experience in designing websites of varied complexity. The main technologies I use in my work are: PHP – I develop the majority of projects in this programming language. I am well familiar with its structure, advantages, and shortcomings. SOAP – I have used the SOAP and WSDL technologies to develop a number of web services. MySQL – the main DBMS I use in my projects. I am well familiar with the finer points of its setup and implementation. HTML\CSS\Javascript\jQuery\Ajax – I often need to engage in front-end development. Technologies I use less often but have a positive experience with: REST, PostgreSQL, Oracle, RabbitMQ, Google Cloud Messaging (GCM), PHP Yii Framework, Wordpress The most interesting projects I have worked on include: 1) A sports statistics system for the South African Golf Association. For that system, I developed a high load web service by utilizing the SOAP and WSDL technologies 2) Systems for online flight booking for the t3com company. 3) A great number of projects which are smaller in size but no less important to me. In addition to web development, I have experience in creating desktop systems and utilities with the use of such programming languages as C# and Java. I will put in my best effort for solving your problem.

    $17.00 /hr
    578 hours
    5.00
  6. Grigory Zhebrunov

    Grigory Zhebrunov

    Senior Web Developer (ASP .NET, C#, Silverlight, Java Script, WCF)

    Russia - Last active: 11/28/2013 - Tests: 5 - Portfolio: 12

    My technical summary: - HTML/DHTML/HTML 5, ASP.NET1.1/.NET2.0/4.0, MVC 3 with Razor, Silverlight, Entity Framework 3.5/4, LINQ, WCF, javascript/jQuery/toolkit, Remoting, log4net, NUnit, JavaScript on IIS server, Java SE/EE, JSP, Eclipse on Tomcat server; Ruby, Watir, Ruby-on-Rails on Web-bricks. - C/C++/VC++/C#.NET development with API/technologies: Win32 API, MFC, OLE, COM, STL, ATL, GDI, OpenGL, .NET, ActiveX, Automation, DirectX, MS XML, MS HTML. - NUnit, Watir, Selenium, Squish Frog Logic, MS Team System, development of Web-test automation tool based on Selenium RC. - Reporting: Reporting Services, Microsoft Report Viewer, Crystal Reports. - Borland Delphi: small windows applications and one large project using the technologies Fast reports, ADO, Automation, OmniXML. - Database development: MS SQL 2000/2005/2008, MS Access, MS Excel, technologies: DAO, ODBC, OLE DB, ADO/ADO.NET, MS Office Automation, SQL/T-SQL (SP, triggers), design of databases with ErWin - Mathematics research: complicated mathematical hands-on tasks solving, Fuzzy Logic, Neural Networks, Expert Systems, Genetic Algorithms, etc. Graphics programming and Game Development: 2D and 3D image processing, computational geometry, game physics. - Computer modeling: GPSS, Arena. - Operating systems: Windows 95/98/Me/NT/2000/XP, Windows CE, Windows Server 2000/2003, MacOS X Leopard. - Source control systems: Pocket PC 2003, Windows Mobile 5, Native Visual C++. - Other: design patterns, files format parsing, data storing technologies, reverse engineering, search systems (full-text search), cryptography.

    $25.56 /hr
    8,744 hours
    4.95
  7. Dhinesh R.

    Dhinesh R.

    Expert JAVA/STRUTS/PHP/WMB/MYSQL/Payment Gateway Integration

    India - Last active: 2 months ago - Tests: 7 - Portfolio: 1

    i have around 7.5 years of working experience on various web applications using various technologies , in all the level of the web project .• Around 7.5+ years of experience in development of robust, maintainable and scalable Web & Client – Server systems, this includes Analysis, Designing, Development, Coding and Testing. • Development Experience in Java, J2EE,PHP,Zend Framework, Hibernate,JPA, Struts, Spring, Ajax, XML,jquery, Mysql, Eclipse,Xampp,Apache weserver,,Apache Tomcat,Jboss under Windows and Linux. • Development Experience on WMQ and WMB. • Strengths include ability in meeting deadlines and deliverables while achieving excellence and quality of work, excellent technical and communication skills. • Flexibility to change/leverage with any new Technology in no time.

    $16.67 /hr
    57 hours
    4.99
  8. Rui Gomes

    Rui Gomes

    Web Developer - Proficient in PHP, Laravel, Javascript, Ruby on Rails

    Portugal - Last active: 3 months ago - Tests: 4 - Portfolio: 3

    I've worked closely with world-class companies throughout the development of outstanding platforms that have been used by thousands. I'm proficient with PHP and I'm also a Laravel early-adopter - I've been using it since early version 3. I've developed countless applications with Laravel, attended the Laracon conference in Amsterdam and I've written several tutorials that have helped hundreds of other developers. In addition to PHP, I've also used Ruby on Rails extensively to develop complex web applications with full featured test suites. Being a Software Engineering student, you'll be sure to get solutions that are well designed, easy to scale and develop upon. I've taken a CAE (Certificate in Advanced English) by the University of Cambridge and passed with flying colours. Communicating with me won't definitely be an issue. Looking forward to working with you on your next web app!

    $50.00 /hr
    168 hours
    4.99
  9. Jim Keir

    Jim Keir

    OCP Oracle Database Administrator

    United Kingdom - Last active: 12/31/2014 - Tests: 4

    British expert in Oracle performance tuning. Multiple OCP certifications, 15+ years experience in the field as DBA and Consultant. SQL and PLSQL tuning, data structure recommendations, database healthchecks, server performance optimisation, Pro*C. Holistic approach to making your Oracle database faster. Spend a little on efficiency, save a lot on hardware.

    $66.67 /hr
    43 hours
    5.00
  10. Tariq Q.

    Tariq Q.

    Certified { NET + C# + iPhone + ABAP + J2ME } engineer | 10 years

    Turkey - Last active: 3 months ago - Tests: 13 - Portfolio: 10

    Over the last 10 years, I have developed a wide range of applications using Borland delphi, VS.net, C#, and SQL including sites for startup companies and small businesses. My core competency lies in complete end-end management of a new windows forms, windows services, xml webwervice application development project, and I am seeking opportunities to build applications from the ground up for you or your business.

    Groups: Application Developers Alliance

    $22.22 /hr
    729 hours
    4.81