Top Upwork Freelancers

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  1. Anton S.

    Anton S.

    Senior iOS developer

    Belarus - Last active: 2 days ago - Tests: 15 - Portfolio: 15

    Software developer for more than ten years. Started my first iOS application back when iOS SDK was introduced. Since then I had explored plenty of dark corners of iOS ecosystem and this really helps me to pick the right tool for the job. I am self-motivated agile worker. Always friendly and proactive in communications which makes me a good team member/leader. I have extended experience with following technologies: Apple native frameworks - from UIKit/Autiolayout and CoreData down to OpenGL, CoreAudio and Accelerate.framework Ad-Hoc app distribution - Testflight, HockeyApp, ; In-House app distribution Project management - JIRA, RedMine Continious integration - TeamCity, Jenkins My code contains best practices, always clean, self-documented, editable, localized and synchronized. Most of UI is in storyboard. I can use any VCS, but git is my favourite one. My experience is not limited by C / Objective-C / Objective-C++ / Swift. I have experience in backend development so it is not secret "where it all comes from" or how to report a bug. oDesk officially recognises me as one of the best mobile developers for the projects I have worked on, my work history and communication skills.

    $44.44 /hr
    1,588 hours
    5.00
  2. Daniel Z.

    Daniel Z.

    Highly skilled API integrator, PHP (ZF) Coder and Project Manager

    Poland - Last active: 4 days ago - Tests: 7 - Portfolio: 6

    Goal: Project and develop high quality apps for your success. Profile: OOPHP & Zend coding, IT consulting and business analyst, project coordinator and manager, Other skills: Apache, Bind, SSH, bashscripting, Memcached, Github, Solaris, Oracle, MySQL, Radius, AD, expert knowlegde of many *ux and windows systems Advantage: Project and implementation of many web apps. Most of it projected and developed by myself using Zend Framework, Google API (youtube, gdata), social API (twitter, facebook). Some of it integrated with operating systems or AAA software (radius, ldap). Usually Design Patterns were used (like Template Method, Version of Control, DAO, Dependency Injection, Decorator and so on). Some application built upon a structure of web services (XML, REST, JSON), some using jQuery and AJAX. Tools and technologies: Apache, radius, bind, ldap, Zend Framework, XML, SOAP, Linux, Linux daemons, Memcached, Sockets, REST, JSON, Oracle, MSSQL, MySQL, Design patterns, MVC, SVN, BASH, PHPUnit, Xdebug, Unit testing, Google Youtube API, Google Gdata API, Google Maps API, Facebook API, PayU API

    $35.00 /hr
    1,615 hours
    4.98
  3. Matthew S.

    Matthew S.

    Experienced Programmer (PHP, CodeIgniter, jQuery, C++, Qt)

    United States - Last active: 3 days ago - Tests: 2 - Portfolio: 5

    I consider myself a fairly decent programmer. I'm fluent in web and software application programming. Lately I've been involved mostly in web applications (using PHP). I'm more suited with web application (getting things working - and well) rather than web design (making things look pretty). The projects I've been involved with used PHP/CodeIgniter along with jQuery for browser scripting. I've also done some work with WordPress plugins. I'm also adaquently experienced in software applications. Programming stuff for Windows and Linux using cross-platform toolkits namely: Qt and wxWidgets. I've also done some low-level GUI stuff using Simple DirectMedia Layer (another cross-platform toolkit). I like computers, enjoy programming and like the challenge of coming up with good software solutions.

    $30.00 /hr
    5,614 hours
    4.91
  4. Grigory Korpan

    Grigory Korpan

    Game/Software Developer

    Russia - Last active: 9 days ago - Tests: 5 - Portfolio: 10

    I'm an experienced game and software developer. I began from making 2d mobile games of different genres from kids books to classic platformers and side-scroll shooters. Then I worked at Unigine (unigine.com) on astonishing universal real-time 3D engine for games and simulations. I've worked on naval strategy game Oil Rush (oilrush-game.com) that came out for PC, Mac, Linux, iOS and Android. I've also worked on Valley Benchmark which apple uses to benchmark it's devices (unigine.com/products/valley) and other products of Unigine. Now I'm working on an iOS client for an amazing marketplace. I'm found of writing perfect code, solving challenging tasks and creating high-quality products. :) Key skills: - c++; - objective-c; - c#; - java; - uikit - opengl; - unity - cocos2d; - cocos2d-x; - box2d; - unigine; - unigine script; - flash, actionscript; - svn, hg, git; - scons; - python; - vim, xcode, appcode, visual studio;

    $33.33 /hr
    1,980 hours
    5.00
  5. Aleksandr Tolstikov

    Aleksandr Tolstikov

    Drupal / PHP expert

    Russia - Last active: 13 hours ago - Tests: 4

    Over 8000 hours on oDesk (only Drupal related). Highly motivated, goal-oriented, hands-on senior software engineer with extensive technical skills and over 15 years of experience in software development. - Expert knowledge of Drupal CMS; - In-depth knowledge of systems architecture and software design methodologies; - 10+ years of experience in web application development using PHP; - Extensive experience in relational database management systems, mainly with MySQL; - Experience in Linux systems administration; - Strong understanding of networking/Internet protocols and formats; - Experience in architecting, implementing and maintaining full-text search platforms;

    Groups: Bluehost Developers and Designers, Drupal

    $40.00 /hr
    8,391 hours
    5.00
  6. Iaroslav Z.

    Iaroslav Z.

    Web / Graphics / UI / UX, Photoshop, Illustrator, HTML / CSS

    Ukraine - Last active: 1 day ago - Tests: 2 - Portfolio: 30

    I'm a professional freelance web and graphics designer from Ukraine, Working with Photoshop, iIIustrator, HTML5 / CSS3 Over the last 10 years i've worked for many high developed US companies that provide high range of web services. My Role was to keep all the graphics and web work in my hands, also communicate with the other developers to achieve the perfect result for a client. Always looking for a full-time position of a Graphics or Web Designer. I'm an expert in what i'm doing: responsible, reliable and communicative person.

    Groups: Yahoo Web Hosting Designer

    $33.33 /hr
    11,870 hours
    4.90
  7. Dmitry P.

    Dmitry P.

    Senior Ruby On Rails full stack developer

    Poland - Last active: 13 hours ago - Tests: 1 - Portfolio: 2

    I have perfect 5 star rating at another freelance site (elance.com) as well - http://goo.gl/A9OgE1 I've written my first program when I was 5 years old, for 9 years I'm doing it as my profession. I've started with PHP but for purpose of more productive work switched completely to Ruby On Rails 4 years ago and mastered my RoR skills for dozens of projects since then. I'm not afraid of challenges, very self sustainable and motivated, always deliver on time. My skills are: Program languages: Ruby On Rails, Node.js (for high load backends) Code management: Github / gitlabs Databases: Mysql, postresql, mongoDB Deployment: Heroku, Capistrano, Docker, Debian-based linux distros Frontend: HTML5, CSS3, HAML, LESS, SASS, Twitter Bootstrap Javascript: Deep knowledge of pure JS, 9 years of experience with jQuery, dozens of plugins, can work with Angular.js, backbone.js (but not specialized in) Experience with API: Paypal, Twitter , Facebook , Google, Google Maps, Shopify, Netsuite, Constant Contact etc. Issue tracking and communication systems: Redmine, Github issue tracker, slack, basecamp Here are my latest project built by me: Huge highload online marketplace - http://goo.gl/oElo0L Shopify and constant contact integration - http://goo.gl/xoU02t Site monitoring solutions - http://goo.gl/dKwaej Unique project to stresstest websites - http://goo.gl/cFhrUD

    $45.00 /hr
    1,064 hours
    5.00
  8. Krishna prabha M.

    Krishna prabha M.

    14+ yrs, MCSE, LYNC, SCOM, SCCM, VMM, DPM, HyperV, AD, Exchange, O365

    India - Last active: 13 hours ago - Tests: 2

    I am a former Microsoft employee with 14+ yrs of experience in IT Infrastructure Management. For the past 5 years, working exclusively for ODesk clients. Specialization includes: Lync 2013, Lync 2010, OCS 2007 R2 Office 365, Windows Azure, DirSync, ADFS 2.0 Windows Server 2012 R2, 2012, 2008 R2, 2008, 2003 AD, DNS,Group Policy, Hyper-V 2012/2008 R2, ISA 2006 SCOM 2012 R2, 2012, 2007 R2, 2007 SCCM 2012, SCCM 2007, SMS 2003 SCVMM 2012, VMM 2008 R2 SCDPM 2012 R2, DPM 2010 MS Project Server 2010, 2013 Prior to becoming a full time freelancer at Odesk, worked as a direct employee of Microsoft, IBM, Tesco and excelled both as individual contributor as well as Team Lead. Certifications: Microsoft Certified Systems Engineer (MCSE) MCP in Enterprise Project Management (EPM) Solution using MS Project Server 2003 ITIL Foundation - Version 3 Key achievements: -Successfully migrated OCS 2007 R2 to Lync 2013 without down time -Integrated Ingate E-SBC with Lync & Verizon VOIP -Implemented ADFS 2.0 and integrated with Windows Azure -Handled numerous disaster recoveries and system builds -Managed 1300 Windows servers with just a team of 4 members -Performed as the technical architect to implement SCOM 2007 across 1300 servers -Effectively managed a team of 24 engineers as the Team Lead for Wintel L3 Support -Led a team of 32 members for implementing Toyota Lean Model and successfully driven the team to follow the process to improve productivity and quality -Involved in Project transition and worked through full life cycle of a project with 1200 Windows servers that utilized technologies like VMWare, SAN, NetApp and Citrix

    $33.33 /hr
    3,999 hours
    4.91
  9. Jovan Pehcevski

    Jovan Pehcevski

    Researcher, Academic/technical writer, Data and Information Scientist

    Macedonia - Last active: 3 days ago - Tests: 5 - Portfolio: 3

    As a PhD in Computer Science, I am an experienced researcher, academic writer and data and information scientist. Over the last 12 years I have gathered an extensive experience in practising and teaching the following computer science concepts: information retrieval, data mining, machine learning, database management systems using MySQL and Oracle, native XML databases using XML, DOM and SAX, web development techniques using (X)HMTL, DHTML, PHP, and MySQL, deploying web services and service oriented architectures, and tuning Apache web server for performance, security and caching. My core competency lies in academic research, data and information science, as well as writing, proofreading and editing of research papers and thesis of all academic levels. I am seeking opportunities to offer my rich professional and academic experience for the strategic growth and developmental needs of your business. My core research interests and strengths are as follows: - Focused information retrieval - Evaluation of focused and content-oriented XML retrieval - Entity retrieval and knowledge discovery - Data mining and big data analytics - Business intelligence and predictive analytics - Time-series data forecasting - Recommendation algorithms for social/news networking sites - Native XML databases, NoSQL and relational database systems - Web servers and web technologies - Web database applications and Internet programming - Web and enterprise security

    $66.67 /hr
    1,640 hours
    5.00
  10. John McCarty

    John McCarty

    Electronics Engineer and Software Developer

    United States - Last active: 13 days ago - Tests: 1

    Background: Electrical engineer with experience in all aspects of product development from concept through production, including hardware design, software development, & system integration. Senior development & test engineer for major defense & telecom companies. Specialties: • Custom software and hardware for measurements and test automation • Software: Labview, MS Excel w/ VBA, C (libraries and console applications only) • Manufacturing process troubleshooting & root cause analysis

    $75.00 /hr
    2,406 hours
    5.00