Top Upwork Freelancers

Clear all filters
  1. Nikolay Kopachevskiy

    Nikolay Kopachevskiy

    Architect, Oracle expert, Lead software developer

    Russia - Last active: 2 days ago - Tests: 1

    I'm a professional in software and telecommunication industry with experience in server and database applications development in over 15+ years. I'm experienced in the development of system architectures, database architectures, mission-critical systems and applications for telecommunication companies. Familiar with Oracle databases and PL/SQL, PHP5, C/C++, C#, Java, Perl.

    $25.00 /hr
    1,708 hours
    0.00
  2. Cristian M.

    Cristian M.

    Cristian Miranda - Java Developer

    Argentina - Last active: 2 days ago - Tests: 5 - Portfolio: 2

    Web Profile: http://cristianmiranda.info -------------------------------------------------------------- My objective is design efficient systems with agile development methodologies. Develop powerful and scalable java applications using the latest technologies available on market. I've been working with Spring framework and now with Google App Engine and GWT.

    $30.00 /hr
    2,324 hours
    0.00
  3. Edgar Salvador Arriaga Lara

    Edgar Salvador Arriaga Lara

    Web Developer

    Mexico - Last active: 2 days ago

    I'm a Web Developer with more than 3 years of experience. My skills include PHP, SQL, HTML, CSS, JavaScript, jQuery, Ajax...

    $12.00 /hr
    2,319 hours
    0.00
  4. Sergey Ovchinnikov

    Sergey Ovchinnikov

    C++, MFC, STL, C#,Java,SQL, Web Developer, jQuery

    Russia - Last active: 1 day ago

    I have experience in following area: web-scraping(C#), system programming(C++), OOP, MVC4(C#)

    $16.67 /hr
    2,412 hours
    0.00
  5. Mateusz Grzegorzek

    Mateusz Grzegorzek Agency Contractor

    Skilled iOS and Windows Phone Developer

    Poland - Last active: 09/09/2014 - Tests: 5 - Portfolio: 7

    I'm an iOS and Windows Phone expert who helps companies and startups design and develop mobile apps tailored to fit their users' needs. I have Master's Degree in Information Technology (2007, Warsaw University of Technology) and I've been developing mobile applications since 2004 when I first started an internship in Psiloc - Mobile Development Company. In 2006 I started my work as freelancer as Windows Mobile developer and few years ago moved to modern iOS and Windows Phone systems. Since then I developed many successful applications and I'm constantly improving my knowledge and skills to keep up with the latest mobile development trends. The software I created received numerous positive articles and reviews. In 2009 my YomoMedia News Reader app received Silver Award in Samsung Application Store Developer Challenge. Later we were invited as BizSpark Featured Startup, which gave us early access to Windows Phone OS and a great deal of support from Microsoft to develop one of the first Windows Phone applications (http://goo.gl/oLX90M). In my work I mainly focus on User Experience, compelling UI Design and good Code Quality. These three aspects help me create software which best serves user needs and is easy to maintain in the future. Additionally to increase productivity I adapted Pomodoro and Getting Things Done techniques and I constantly try to read about new xCode and Visual Studio tricks which help me develop solid code in less time. My intermediate graphic design skills help me perform graphics editing tasks whiteout the need of designer help (GIMP / Photoshop) – this is especially helpful when customer wants to test few ideas quickly without much effort. For last few years I've been developing Mobile Banking applications for iOS and Windows Phone devices. This application was developed as a generic solution which is later adapted to specific Bank requirements. This app is currently used by few different banks in different countries. Additionally I develop other tablet products supporting bank day-to-day operations, form collections and customer management. Lately I've been also working closely with few other clients and developed smaller apps like EBook Reader and YomoMedia News Reader with Podcstas and Video support – both for Windows Phone. In my free time I love spending time with my wife and daughter. I'm a sport passionate and this was always a big part of my life. Since young years I've been playing tennis and recently moved to squash. I also train boxing and running - both keep me fit and give me energy to keep up with my 1 year old daughter. My other passion is music. I play guitar and love listening to Progressive Rock, Blues Jazz as it greatly helps me focus on my daily tasks. Feel free to contact me if you'd like to transform your great idea into great product.

    Associated with: Rivia

    $44.44 /hr
    1,145 hours
    0.00
  6. Yury A.

    Experienced iOS developer

    Germany - Last active: 1 day ago - Tests: 4 - Portfolio: 4

    Hello, I am a software developer with 10 years of experience. I have been working with iOS for 5 last years and have a big experience in Objective C, Swift and Cocoa Touch. - Expert in Objective C and CocoaTouch. Have successfully completed 15 iOS projects. Designed and implemented from the scratch 5 iOS applications. - Managed the distributed team of 3 engineers according to the Agile methodology. - Proficient in object oriented analysis, design patterns, refactoring and code reviews. - Masters degree in Computer Science. - My Stack Overflow profile: https://careers.stackoverflow.com/avtolic, http://stackoverflow.com/users/3140927/avt Skills and technologies iOS development: - Languages: Objective C, C++, Swift - CocoaTouch: UIKit, CoreData, CoreAudio, CoreBluetooth, CoreGraphics, CoreAnimation, MapKit, Quartz2D, OpenGLES etc. - Third party libraries: AFNetworking, GoogleAnalytics, Kif, TransloadIt, PromiseKit, Facebook, Twitter, dozens of others... - IDE and tools: Xcode, AppCode, Interface Builder, SparkInspector, BitBucket. - VCS: Git, SVN. Other skills: - C++, SQL, JavaScript, HTML, CSS - Design Patterns, UML, Refactoring - Theory of Algorithms and Data Structures - Agile methodologies - Haskell and functional programming (as a hobby)

    $35.00 /hr
    1,645 hours
    0.00
  7. Alejandro Saenz

    Alejandro Saenz Agency Contractor

    Game/Web Developer

    Costa Rica - Last active: 2 days ago - Tests: 5 - Portfolio: 12

    I am a computer systems's engineer with emphasis in management, with leading and coordinating teams experience, business analysis experience, project management experience and development experience (games, web and databases). With abilities such as work under pressure, team work, leadership and team management.

    Associated with: AMSGAMES LLC

    $26.67 /hr
    1,472 hours
    0.00