Top Upwork Freelancers

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  1. Jason J.

    Jason J.

    Engineer for Electrical/Computer/Controls/Mobile/Embedded

    United States - Last active: 2 months ago - Tests: 1

    I design and develop high value microcontroller systems. I also create programs in C, C++, VB.Net, and C#. I am an experienced Electrical Engineer with many years of experience. I specialize in control system design/programming and also in developing software for computers and embedded systems. I am a creative and driven person that loves solving problems. I take pride in my work and accomplishments. I am also extremely detail oriented and diligent in my work. My skills include: -Control System Design. This includes specifying components to ensure a complete and functioning system. -Control Panel Design and Building. -Electrical Distribution System Design. -HMI and PLC programming. PLCs includes many different brands and programming languages. HMIs include Wonderware Intouch/Archestra/Historian and GE iFix/Historian. -Embedded System programming. This includes microcontroller programming. Microcontrollers used include Atmel, PIC, Arduino, and Cypress. -Mobile Platform programming. This includes Apple iOS, Android, and WebOS. -Software Developer. This includes Microsoft C#, Microsoft Visual Basic, Javascript, HTML, XML, PHP and C/C++. -Experience with SQL Server and MySQL. -Proficient in Microsoft Office. -Proficient in AutoCad. This includes PLC layouts, Electrical design, Control Panel design, and Process and Instrumentation drafting. -Networking and VPNs. Experience includes network design and configuration of routers. -Computer Management and Repair. Troubleshooting computer systems as well as repairing physical hardware. OSs include MS Server 2003/2008/2012, Windows XP/7/8, and Ubuntu Linux.

    $27.78 /hr
    133 hours
    4.97
  2. Oleksandr Melnykov

    Oleksandr Melnykov

    Android Developer

    Ukraine - Last active: 4 months ago - Tests: 5 - Portfolio: 15

    Hi, my name is Oleksandr and I want to help you to bring your ideas to the life. I am Android developer with 2.5+ years experience in programming for mobile devices and 3+ years in Java. During this time I successfully completed several projects with different complexity for customers and users. My aim is to build a robust and user-friendly mobile apps adhering to the coding and platform standards. I have an experience in publishing and maintaining own projects to Google Play Market. Skills: - Experience with Android application development using Android SDK (2.5+ years) - Deep knowledge of Java (3+ years) - Good knowledge of the OOP principles, data structures and GoF design patterns - Experience with Test Driven Development - Understanding of mobile UX and UI design best practices - Passion for writing clean and maintainable code - Good knowledge of the refactoring techniques - Experience in creating own projects from scratch, publishing on Google Play and further maintenance - Comfortable with written and spoken English Android skills: - Durable REST clients with Retrofit, OkHttp, Gson, Otto - Data storage with SQLite/OrmLite + ContentProvider - Unit and integration testing with JUnit and Espresso - UI customization, theming and styling (including latest Material Design) - Widgets - Google Play Services - UI/UX design for tablets - Building projects with Gradle - Version control with Git

    $20.00 /hr
    83 hours
    4.90
  3. Minakshi Mishra

    Minakshi Mishra

    C++, C#, MFC, WxWidgets, Directshow, COM, WIN32 API, Sockets,Boost,SQL

    India - Last active: 07/07/2014 - Tests: 1

    I have 10+ years experience in developing applications for reputable Product Development companies in India and US. My core expertise is in C++, MFC, WxWidgets, DirectShow, COM/DCOM, WIN32 API, Socket Programming, BOOST library, STL, C#, XML, SQL Server etc. I have expert level command on Multithreading, OOPS concepts, Algorithms and Data Structures. My greatest strength is my commitment. I take great pains to make my programs readable and elegant, in addition to being correct and efficient.

    $44.44 /hr
    80 hours
    5.00
  4. Muhammad Aslam

    Muhammad Aslam

    Software Engineer

    Pakistan - Last active: 2 months ago - Tests: 2 - Portfolio: 2

    I am a experienced iOS developer having 4+ years experience. I have hand on experience with Cocos2dx for multi-platform games Unity 3D quite hand on experience Native Apps for ios devices Memory Management Integration of Facebook,Twitter. Integration of chartboost,revmob,admob,applovin and playhaven Audio and video Recorders, Players. User Interface Features like Animations , Gestures , Swipes , Shaking. Push Notification. In App Purchase. Experience with UIKIT

    $22.22 /hr
    27 hours
    5.00
  5. Affan Rauf

    Affan Rauf

    WordPress plugin developer with affiliate marketing dev experience

    Pakistan - Last active: 6 months ago - Tests: 18 - Portfolio: 1

    2010 Onwards: In WordPress development. I have developed plugins and theme from scratch in addition to their customization. I have worked in areas like: - Coupon site - Local deals aggregator plugins - Online stores etc 2007 - 2010: Developed & tested Java multi-threaded applications and web services for an international financial institute from Netherlands

    $16.67 /hr
    829 hours
    4.96
  6. Yury P.

    Yury P.

    Node.JS, Angular.JS, CouchDB, jQuery, Material Design, Bootstrap

    Russia - Last active: 5 months ago - Tests: 12 - Portfolio: 5

    I'm a hard-working developer with 14 years experience. I think I am sociable and it's really easy to interact with me. My experience includes a large variety of desktop, client- server applications and web applications using C/C++, C#, MySQL, MS SQL. For last 6 years I've been working with JavaScript using Node.JS, PhoneGAP, CouchDB and AngularJS. My skills in building friendly UI, making clean, quality & easy to support sources are quite good. I'm looking for opportunities to develop mobile & web & cross-platform desktop applications.

    $66.67 /hr
    3,070 hours
    4.77
  7. Vicky S.

    Vicky S.

    iOS App Developer

    India - Last active: 4 months ago - Tests: 2 - Portfolio: 12

    I am a Consultant having more than 2 years of experience in mobile app development and web services, software testing and quality assurance. My objective is to make sure My client business grow simultaneously with the development I will do for them. I Love to work with start-ups and always try to turn my job in ongoing work by facilitating good work. I have strong grip over developing these below listed domain's app : ------------------------------------------------------------------------------------------------- 1) Photo Editing app (iOS, Android) 2) Travelling App (iOS, Android) 3) Food and Bevrages App (iOS, Android) 4) Social Media App (iOS, Android) 5) Utility/E-commerce App (iOS, Android) 6) Real Estate App (iOS, Android) I'm always ready for you and I can start your project immediately as soon as you contact me.

    $13.33 /hr
    553 hours
    5.00
  8. Bohdan Kalynovskyi

    Bohdan Kalynovskyi

    Senior Web Developer, Technical Leader

    Poland - Last active: 2 months ago - Tests: 6 - Portfolio: 11

    About 11 years of working experience. Over 50 different web projects. Bringing to life old projects, moving forward running and starting from scratch. Expertise in bleeding-edge frontend technologies, good felling of project architecture. Creative, curious, stress-stable, generator of ideas, self-motivating, perfectionist. Working with customer directly, team leadership, mentoring, project planning. Speaking English fluently. Exciting and difficult frontend tasks are preferred. I am feeling Javascript, HTML5, Node JS and dynamic Ajax user interfaces as my strength area.

    $25.00 /hr
    151 hours
    4.76
  9. Hassan Khan

    Hassan Khan

    Senior DBA and Application Developer

    Pakistan - Last active: 6 months ago - Tests: 9 - Portfolio: 4

     Versatile and accomplished management professional offering over 9 years of experience in database and application server administration, and application development across various industries.  Proficient in Oracle Developer 4.5/ 2000/ 6i/ 10g, Access, VBA, Crystal Reports with Oracle, SQL Server, Access Databases on huge networked installations consisting of AIX, and Windows servers.  Recognised for hands-on experience in installing and testing new versions of the database management system and maintaining data standards, including adherence to the Data Protection Act.  Strong working knowledge of controlling access permissions and privileges; developing, managing, and testing back-up and recovery plans, and ensuring correct functioning of storage, archiving, back-up, and recovery procedures.  Showcasing exceptional organisational, multi-tasking, and analytical skills leading to effective operational excellence and communicating regularly with technical, applications and operational staff to ensure database integrity and security.  Adept at commissioning and installing new applications and customising existing applications in order to match them appropriately; and working closely with IT project managers, database programmers, and web developers.  Strong expertise in leading application development teams and administration and tuning of Oracle Databases including Container Terminal Management System, Core Banking, Oracle Financials, HRMS, Treasury, AML, KYC, Siebel, and Knowledge Manager.  Skilled initiator of successful strategies ensuring effective operational excellence and improved work ethic, culture, and performance. Received Appreciation letter from the CEO of Karachi International Container Terminal for successfully implementation of CARe project.  Excellent communicator and a top negotiator with an ability to work under pressure in fast-paced, time-sensitive environments. Proven ability to effectively interact with people of diverse nationalities; comfortable working in a multicultural setting.

    $16.67 /hr
    116 hours
    4.94
  10. Jeffrey Lua

    Jeffrey Lua

    Asp.net Developer

    Philippines - Last active: 4 months ago - Tests: 3 - Portfolio: 11

    I have been working in the IT field for 8 years now developing various desktop and web application for different industries from manufacturing, pharmaceutical, logistics and accounting. I also have in depth experience with regards to data processing. I specialize in applications developed in C#. I am a MCTS in NET Framework 2.0 Windows Applications and ASP.NET 3.5 Web Applications. My over 8 years of professional experience has equipped me to work with minimal supervision, practice professionalism, value integrity and manifest excellence in everything that I do.

    $22.22 /hr
    1,906 hours
    4.89