Top Upwork Freelancers

Clear all filters

Alexey Shestakov

Alexey Shestakov Agency Contractor

Senior Programmer/Developer


I'm passionate about games application. I have been successfully developing MMO FPS "stalker-online" for more than last year from the start of project. I'm working on all of basic mechanics and tools to create interesting game process and productive work of game designers. Also i have a more than 6 years experience in network administration, that allows me to create network stable code. More than wich, i have a small experience in game design to help designers create an interesting mechanics. I'm experienced in C#, Python and familiar with BigWorld Engine and Unity.

$20.00 /hr
1,709 hours

Alex Belozerov

Alex Belozerov Agency Contractor

4500+ h on UpWork, 7+ years NodeJS, JavaScript, Chrome Dev, PM

Russia - Tests: 6 - Portfolio: 7

I am technical specialist and manager of the team of developers. I will be glad to improve customers business with providing top quality development services, always develop projects till successful completion. My core competency is full cycle of web projects management and development up to enterprise level. Interested in long term relations. Current area of expertise: 1) Chrome Extensions, Firefox Addons 2) NodeJS 3) React / Flux Previous experience: .NET, C#, ASP.NET MVC, SQL Server KEYWORDS: Project management skills, Leadership skills, Project analysis, Project estimation, Business process analysis, Architect skills, Mathematical and science analysis skills, Design Patterns, OOP, Agile, Javascript, Chrome Extensions, Chrome Apps, NodeJS, ExpressJS, Kue, RabbitMQ, Mandrill, CouchDB, MondgoDB, Cloudant, HTML5, CSS3, React, Flux, Google App Script, Pebble SDK

$45.00 /hr
4,724 hours

Victor Vlasenko

Victor Vlasenko Agency Contractor

Founder and Senior Developer at SysGears

Ukraine - Tests: 4

A senior developer with over 12 years of experience, focused on creating complex Java/Scala solutions. Especially efficient at software optimization and implementation of high performance computing systems. Fully dedicated to product quality, beauty of architecture and performance of the code. Technical Proficiencies: - Languages: Java, Scala, Groovy, JavaScript - Web Frameworks: Grails, Play 2, AngularJS - Frameworks: Akka, Spray, ZooKeeper - Databases: MongoDB, MySQL, H2

$30.00 /hr
2,274 hours

Sumit Gupta

Sumit Gupta Agency Contractor

Top Rated App Developer (8700+ Up-Work Hours, 10+ years experience)

India - Tests: 3 - Portfolio: 18

Thanks for visiting my Profile! I am Sumit from Logix Enterprise. I have have 10 + years of experience specifically in Software , iOS/iPad and Android Applications. (Working on Up-work from 5 Years with 8700 Hours and 5 Star rating ) I have worked on many applications including Social media, Enterprise, Chat application, Augmented Reality(AR) application, Survey Application, Healthcare applications,Social Networking application, Racing Games etc. I am very well versed in Objective-c, Java, Eclipse, Android, cocos2d, Unity3d, Unit test frameworks,x-code 6.2 etc. I have great communication skills in English. I have good expertise in iPhone development, HTML, CSS, Java-script, x Code, Cocoa Touch, Corona, Cocos2D, Sencha Touch, Phone-gap, RestKit APIs, Core-data, VoIP, XMPP, SIP Server, Jabber, Java, eclipse, Social networking web services, Google web services etc. Languages: Objective-C, C++, Android SDK, Core JAVA, HTML, HTML5, Java Script & XML, Phonegap, Titanium Operating System: Microsoft Windows, Mac IDE: x Code 6.0, 6.1, 6.2, 6.3, 6.4 and x Code 7.0, Scripting: XML parsing, JSON parsing Tools/Utilities: SVN, Git Domain Knowledge: iPhone/iPad application development. - Social Media, Health-care, Social Networking, Medical, Fitness, Travel, Food, Real- Estate, Business, Enterprise, Entrepreneur, Chat, Odoo, News, Financial and Market Application development. Other Skill-Set:- Qt, CRM/ERP Development, DHTML, SQL Programming, Mathematics, JS, SQL, HTML 5, Java, SQL, Git Hub, C#, XML, XAML, MYSQL, jQuery, JavaScript, REST and SOAP API etc. I am also familiar with third party tools like Kendo UI, DevExpress and third party APIs like Facebook API, Twitter API and Google map API. I worked on Waterfall and Agile software development technology. I like to program. I like complex and diverse assignments that keep my mind sharp and allow me to constantly learn new things. It would be great if we can work together. We believe in "Commit less and deliver more" philosophy. Thanks

$20.00 /hr
8,700 hours

Andrei G.

Andrei G. Agency Contractor


Romania - Tests: 2 - Portfolio: 1

Newrosoft Dezvoltare si Cercetare started to operate on 21 Dec 2001. Made of 30 hardcore programmers we specialize in smartphone coding - iPhone and Android. During the year 2010 we have uploaded 20 applications on AppStore and developed more than 50 iPhone/iPad apps. We have a strong Android team and we think that 2011 is going to be the Android year. We are Nintendo DS/DSi licensed developers, Nintendo Wii licensed developers, Sony PSP licensed developers. Some of our most prestigious clients have been Sony Pictures Digital, Gameloft, British Telecom Service Description We are making: - iPhone/iPad/iPod applications/games - Android applications/games - BADA applications/games - BlackBerry applications/games - website design and development - 3D PC games - DS/DSi games - Wii games - PSP games

$15.00 /hr
1,545 hours

Konstantin S.

Konstantin S. Agency Contractor

bug free software development, fine art and illustration

United States - Tests: 7 - Portfolio: 5

I am a software design engineer with extensive experience in design and implementation of desktop and web applications. During my career I have worked with many different technologies, both proprietary and open source. Most importantly, I know how to write code that has a solid theoretical foundation. If your project requires high quality, "bullet-proof" code, I can help you. I am also a fine artist and I would be very much interested to get involved in to an illustration project or a computer animation project, in particular, HTML5 canvas animation. If you would like to hire me for a fixed-price job, please make the job hourly and set the job's limit on hours to be equivalent to the value of your fixed price.

$66.67 /hr
2,368 hours

Mateusz Lisik

Mateusz Lisik Agency Contractor

Software Engineer

Poland - Tests: 2 - Portfolio: 1

Experienced Software Engineer. Throughout my career I've developed numerous websites and browser-based dedicated systems. My strongest skills are these web-development related but I'm also experienced in iOS app development. I major in: * PHP * MySQL * HTML(5) * CSS(3) * JavaScript * ExtJS Framework * Objective-C (CocoaFramework) * Java for Web (Play2 Framework) As for many developers, programming is my passion, so I'm constantly learning new technologies and mastering these that I’ve known. I'm currently fascinated with Mobile Applications development.

$30.00 /hr
981 hours

Victor Cernobai

Victor Cernobai Agency Contractor

Senior C++ Financial/Trading Software Developer

Romania - Tests: 2 - Portfolio: 2

Hello and welcome to my oDesk profile, My name is Victor Cernobai and I am a professional C++ developer exclusively specialized in developing trading (and related) applications. I am in the financial industry since 2009. During this time I have participated in the development of a wide range of modules involving concepts such as high frequency trading, client/server architecture, distributed modules, OOP design patterns, low-latency optimizations, multi-threading, GPU acceleration, IPC, Socket Programming etc. My main IT expertise is C++, but I also do have working experience with Python and C#. Some more details about my expertise: a) API connectivity / platforms: Interactive Brokers API, Currenex API, FIX protocol with QuickFIX, IQFeed API, Trading Techologies, CQG, PFGBest, FXCMpro, Hotspot/ITCH, Bloomberg Open API, MultiCharts; b) Building financial charts: OHLC, bars, Point and Figure; c) Implementing technical indicators like: Moving Average simple/exponential, MACD, RSI, bollinger bands etc. d) Data storage solutions: MySQL, SQLite, MSSQL, binary files; e) Back-testing and Optimization solutions; f) Trading algorithms: arbitrage algos, mean reversal, trend-following, trendline based etc.; As a freelancer I am only struggling to: a) Apply my programming and trading knowledge to bring higher value to trading applications; b) Be always close to the client; c) Take projects only when 100% confident they can be done on time and on budget; d) Provide the best answers to clients questions; e) Work only with serious clients. Thank you for your time and do not hesitate to ask me for portfolio samples! Best regards, CVI

$55.56 /hr
1,083 hours

Nikunj Patel

Nikunj Patel Agency Contractor

Software Engineer - Asp.Net, MVC

India - Tests: 4 - Portfolio: 7

Professional .NET Developer with a passion for software development especially with agile practices such as Test Driven Development, with an in depth knowledge of OOP, Domain Driven Design. Since August 2009 software development experience spanning ASP.NET 2.0 to ASP.NET 4.5 in C# with team leadership and mentoring experience. Expert in full System Development Life Cycle (SDLC). Has the ability to understand and transform complex business requirements into software, ensuring applications are delivered on time, to specification, are scalable, performance optimized and maintainable. Experience of non-Microsoft .NET technologies including JQuery, Subversion, Structure Map and NUnit. A highly motivated individual who is always learning, able to work to tight deadlines, and who can communicate effectively with technical peers as well as business users. Someone who encourages learning and the sharing of ideas and is always open to new ways of working. Core Programming Languages: C#, SQL, JavaScript, VB.NET, JSON Databases: MS SQL Server (2000, 2005, 2008, 2012), ORACLE (10, 11), MySql, MS Access Technologies and Frameworks: .NET Framework (2.0-4.5), ASP.NET, MVC, ADO.NET, AJAX, jQuery, HTML, HTML5, CSS, XML, XSLT, WCF, IIS 7.5, NUnit, LINQ, Web services, Web API, Entity Framework (Code First and Data First), jQuery Mobile, Telerik Controls,, Task Parallel Library, Microsoft Azure, Facebook API, YouTube API, Twitter API, LinkedIn API, PubMed and Clinical Trial Content Search, UML Modeling, Visio, Target Process Development Methodologies: Extreme Programming, Test Driven Development, Agile development, Scrum, Domain Driven Design Source Controls: SVN, Visual Source Safe, Team Foundation Server

$22.22 /hr
1,004 hours

Yury A.

Yury A. Agency Contractor

Android, iOS, Windows Phone development

Russia - Tests: 2 - Portfolio: 4

Hi there, nice to see you on my page! :) I'm experienced Mobile developer and software architect. I have 10 year experience working in IT: - Siemens IT Solutions (Senior developer/Teamlead), - ATOS (BA/Architect), - HP (Manager of portal), - (Official Opera Software mobile store). - (CEO) My primary skills: - Product development ( b2b/b2c product consulting, MVP concepts, business development, statups) - Usability, UX(user experience) - Mobile solutions development (b2b, b2c) - Cloud and SaaS solutions development (Microsoft Azure). Technical background and experience: - Java / Android developer - C# / Xamarin Studio (developer/architect/BA of Android, iOS and Windows Phone apps) Feel free to contact me! Yury

$46.67 /hr
2,000 hours