Top Upwork Freelancers

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  1. Sergey Andreev

    Sergey Andreev Agency Contractor

    Web & Software development

    Russia - Last active: 11/08/2014 - Tests: 11 - Portfolio: 6

    8+ years in software development Web & Desktop applications Backend & Frontend applications Experienced in JavaScript and most popular frameworks (jQuery, ExtJS, OpenLayers) 5 years experience in .Net Web development (ASP.NET MVC, WCF, WCF REST via C#) 5 years experience in .Net Desktop development (WinForm & WPF via C#) I would be happy to work with you on some interesting projects.

    Associated with: Smart SQ-O, Urisco Agency

    $30.00 /hr
    3,246 hours
    5.00
  2. Milos V.

    Milos V. Agency Contractor

    Software engineer for web technologies (PHP/JAVA/HTML/CSS/) EXPERT

    Serbia - Last active: 09/30/2014 - Tests: 2 - Portfolio: 5

    During my career I have developed several web applications such as web shops, poll gathering web applications, small websites and others using fololowing technologies :(D)HTML, CSS, PHP, Java , JavaScript, MySql, Adobe Flash etc. Also I am familiar and have experience with software modeling toos such as power designer. In regards to my work history, I have also worked as IT manager for 3 years for Exit Festival's official tourist services and had collaboration with other companies, payment systems, banks and individuals. There I've learned how to lead a team of programmers and web designers and also I received knowledge and experience in business management, bussines processes and routines and how to support them with applications and software in general. My goal is creating top quality software which solves issues, helps in accomplishing tasks in easier quicker and cost effective way and makes things possible such as online shopping, transactions, marketing etc. Therefore I seek opportunities in which I find these challenges. My long term goal is to become the one of the best software consultants/engineers/developers/architects and help businesses grow and multiply with creativity and effectiveness in all their aspects.

    Associated with: WeDoQa

    $27.78 /hr
    1,613 hours
    5.00
  3. David J.

    David J. Agency Contractor

    ** Skilled professional software engineer (cs & s/w eng degrees +PhD)

    United States - Last active: 03/16/2011 - Tests: 6 - Portfolio: 3

    With 17 years experience in software engineering and development, I've worked on a diverse set of projects. I consider myself a life-long learner and have never hesitated to dive into becoming an expert in new domains. I've worked on projects in academia, for businesses, defense contractors, government laboratores in several countries and also many of my own varied projects. As of May 2013 - I'm available 20hrs/wk (possibly up-to 30). Some areas of expertise include: - Distributed systems & architecting for the Cloud - Web Applications (Ruby & Rails, LAMP - Linux/Apache/MySQL/PHP); AJAX - jQuery/Javascript; web-service APIs (XMLRPC/JSONRPC/REST) - Relational & Object Database Design - Simulation: physics simulation, 3D graphics (OpenGL, OpenSceneGraph) - C++ desktop applications (UI, libraries, components) - Bioinformatics (Biolab Matlab-like bio environment - Java/C#/.NET/Python) - Networking (protocol design; wireless; TCP/IP; HTTP and related technologies) - Embedded systems (hardware system design, construction & programming) - Operating System design and implementation - Language design, interpreter and compiler construction - Human Computer Interaction (HCI) - user interface design & implementation (X11, Interviews/Fresco, Qt, Swing, AWT, Winforms, GTK+) - Robotics: AI, Vision, Path planning, Inverse Kinematics - Hardware: Sensors, VHDL, FPGAs Most of development has historically been in C++, but in recent times I've favoured C#, Java or Ruby. For web applications and services I prefer Ruby but also have experience in PHP. Over the years I've used many languages and can pick up new languages and their library frameworks quickly. I've also designed languages (upto the complexity of C++) and written interpreters and optimizing compilers (so I've not met a language feature I'm not well versed with). I'm a good communicator, proficient at technical writing and have published many papers in peer reviewed journals and other publications. I'm most interested in working on web sites/services, particularly where complex distributed systems involving interacting databases are concerned or in the area of virtual reality, 3D graphics and simulation systems (including cutting-edge 3D game platforms). However, in general I'll find anything challenging interesting to work on!

    Associated with: EgoMachines Agency

    $112.00 /hr
    1,064 hours
    5.00
  4. Serhiy Kanyuka

    Serhiy Kanyuka Agency Contractor

    I like to mix technologies to get the best solution for client.

    Ukraine - Last active: 09/20/2014 - Tests: 7 - Portfolio: 5

    I am developing for more than 10 years and participated in development of big projects (as team member) and developed small projects on my own. There were native client-applications for Windows (C++, C#) and Symbian as well as servers and web applications (Linux, Freebsd, Windows). For the last 4 years I was also working with set-up and monitoring of Linux/Freebsd servers and developing the web-applications. I have quite a large experience in developing and debugging so I can look at project deployment as developer and as administrator that gives better and faster result. The learning of new technology and it’s intergation is my favourite activity that’s why I will understand you easily and integrate in your project team. My skills: OS: Linux, Debian, RedHat - expert, FreeBSD and Windows Server - proficient Web servers: Apache, Nginx, Tomcat, haproxy Database servers: Mysql, Postgresql Monitoring, statistics: Munin, Webalizer CMS:Joomla, yii, wordpress Advertising: OpenX, AdSense, WordPress Scripting: bash, perl, php, javascript Languages:C, C++ SDK:Qt Virtualization: Vmware esxi/server Mail servers: Zimbra, Exim, Sendmail, Dovecot Other: standard network services (DNS, DHCP, Samba, SVN, http proxy, backups, monitoring etc), firewalls and routers I have work with hosting: hetzner.de, rackspace, amh.com, advancedhosters.com

    Associated with: Krechet Company

    $24.44 /hr
    7,812 hours
    5.00
  5. Denis Danilevskiy

    Denis Danilevskiy Agency Contractor

    Windows | Mac OS | Qt | C++ | .Net Developer

    Russia - Last active: 3 months ago - Tests: 2 - Portfolio: 3

    Over the past 8 years, I have developed various applications for the web, desktop computers, industrial devices. I like to solve interesting problems and bring work to the end to my design and make a profit to the customer. Platforms: Mac OS X, Windows XP - 8.1, Windows Embedded, Windows CE, Linux Language: Qt/C++, QML. C#, .NET, ASP.NET MVC, ASM, Silverlight for Windows CE, WPF Technology: RS-232/485, Bluetooth, RF, RFID, USB, DSP, CAN, Modbus, GPS, GLONASS, GSM / GPRS

    Associated with: nan.soft

    $20.00 /hr
    53 hours
    5.00
  6. Ostap M.

    Ostap M. Agency Contractor

    Java Developer

    Ukraine - Last active: 12/22/2014 - Tests: 3 - Portfolio: 3

    I am Java Developer with more 3 years of experience. I have developed many projects using modern frameworks and able to learn new one quickly if needed. Before I worked as team member developing networking client-server application and some web projects using MVC frameworks or plain JSP/Servlets. Languages : Java, Python Technologies : JSP, Servlets, JDBC, Web Services, REST Databases : MySQL Frameworks/Libraries: Spring, Hibernate(JPA) , JUnit, JavaFx, Netty Design skills: OOP, Gof patterns, UML Software Development Methodology: Agile, XP, TDD Tools: Maven, SVN, Git, Jenkins IDE: Intellij Idea, NetBeans Other: HTML, JavaScript, jQuery, XML, JSON, JIRA

    Groups: Corona Labs

    Associated with: Progost

    $22.22 /hr
    189 hours
    4.15
  7. Andrei Istomin

    Andrei Istomin Agency Contractor

    Java/Grails Developer

    Germany - Last active: 2 months ago - Tests: 4 - Portfolio: 6

    Since start of my career I've been using a lot of technologies/languages/frameworks for creation varied types of software in different areas of human life. Last years I'm focused on server side issues, including multi-threading, concurrency and complex business logic problems. Mostly I work with Java technologies(including Grails, Spring, Hibernate and other frameworks). I like to work with serious, adequate and honest clients. I'm happy if I can help somebody to create something meaningful. I'm opened for technologies and tools that I've never used before. It's very interesting to me. It allows me to open areas of life that are new to me and to get experience that I've never had before. Feel free to contact me if you think that my skills and experience might be useful for you.

    Associated with: AI Rising Soft

    $35.56 /hr
    5,636 hours
    5.00
  8. Victor Cernobai

    Victor Cernobai Agency Contractor

    Senior C++ Financial/Trading Software Developer

    Romania - Last active: 3 months ago - 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: Interactive Brokers API, Currenex API, FIX protocol with QuickFIX, IQFeed API, Trading Techologies, CQG, PFGBest, FXCMpro, Hotspot/ITCH, Bloomberg Open API; 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

    Associated with: CVI Trading Software Agency

    $55.56 /hr
    1,065 hours
    4.88
  9. Martin P.

    Martin P. Agency Contractor

    Mobile Applications Architect

    United States - Last active: 4 months ago - Tests: 3 - Portfolio: 8

    I am a professional iOS developer. I provide high quality development services for iPhone and iPad. I have more than 4 years of professional development and more than 10 apps submitted to the Appstore. I create a project plan for every project and I always keep the client up to date with the project progress. I have the knowledge to build an app from the ground up and to submit it to the Appstore. My work is a synonym for quality !!!

    Associated with: Samsourcing

    $44.44 /hr
    433 hours
    5.00
  10. Alexander G

    Alexander G Agency Contractor

    Software Developer

    Armenia - Last active: 10/11/2014 - Tests: 5 - Portfolio: 6

    Professional Experience 02.2013 to present Simply Technologies Position: Senior Software Developer Yerevan, Armenia 02.2008 to 02.2013 Macadamian AR Position: Senior Software Developer Yerevan, Armenia 08.2006 to 02.2008 Synopsys LLC (SEG Department) Position: Software Developer Yerevan, Armenia 08.2002 to 06.2004 HPLA LLC Position: Software Developer Yerevan, Armenia Projects Yidio video search engine Mac OS Snow Leopard 10.7, Objective C, Xcode 4.5.2, iOS SDK 5.0+ Implementing Yidio application for iPhone. Yidio is the platform for the discovery, consumption, and socialization around entertainment and digital media. Blackberry 10 support for Titanium Studio Windows 7, QNX QDE, v8 JavaScript engine, BB Cascades Porting the Titanium Mobile SDK codebase to BB10. CorelDraw X6 version maintenance Windows 7, VS 2010 Development and maintenance. FAA NAS Voice Switch Linux Fedora 14 with QT 4.7 Implementing SIP extension based on SIP stack from Media5. Cisco Umi telepresence extension for mobiles MacOS 10.6, Java, iOS SDK 3.2+ Implementing Cisco Umi telepresence extension for iPhone/iPad. Flip Share Project on Android and BlackBerry devices Windows XP, Java, Eclipse IDE 3.4.2, Android SDK 1.5, BlackBerry JDE Video streaming. Web client UI design and implementation for Android and BlackBerry devices. Human resource time-tracking system extension Windows XP, C#, WCF/WPF, VS2008, SQL Server 2005, SVN Team lead of 3 resources. Design and development of desktop extension of existing web-based time-tracking system. ChoiceStream, Web Recommendation Manager Windows XP, Linux, Aptana Studio, Ruby on Rails, JavaScript, RSpec, Selenium, Tomcat, Mongrel, MySQL, Perforce Secured website development, test automation. Handling technical design issues. Nortel PC Client AS5300 Services Project Federal Project containing base Nortel PC Client, including new features for federal purposes. Nortel PC Client maintenance Windows, MS VS2003 PC-based application: telephone service, video calling, instant messaging, real-time call disposition, conferencing, file sharing and white boarding. Personal Projects iPhone application development Mac OS Snow Leopard 10.6, Objective C, iOS SDK 3.1 Streaming video client UI design and implementation, based on web services providing by customer. Alarm Clock for iPad Mac OS Snow Leopard 10.6, Objective C, iOS SDK 3.2+ http://itunes.apple.com/us/app/alarm-clock-with-flashlights/id413649717 http://itunes.apple.com/us/app/cool-alarm-clock-day-reminder/id504174371 http://itunes.apple.com/us/app/alarm-clock-day-reminder/id547232326 Compass application for iPhone, iPad devices Mac OS Snow Leopard 10.6, Objective C, iOS SDK 4.3+ http://itunes.apple.com/us/app/compass-pro/id458958949 Speedometer application for iPhone, iPad devices Mac OS Snow Leopard 10.6, Objective C, iOS SDK 4.3+ http://itunes.apple.com/us/app/speedometer-s54-speed-limit/id483710281 Zombie Detector (Smart Camera) Mac OS Snow Leopard 10.6, Objective C, iOS SDK 4.3+ https://itunes.apple.com/us/app/zombie-detector-smart-camera/id552760128

    Associated with: ARARAT

    $16.67 /hr
    155 hours
    4.87