Top Upwork Freelancers

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  1. Monica Gerchinhoren

    Monica Gerchinhoren

    Mobile Developer and Tester

    Argentina - Last active: 20 hours ago - Tests: 1 - Portfolio: 6

    I'm a System Engineer with 10 years of experience. Over the last 6 years I have developed and tested a wide reange of mobile applications in the main platforms iOS and Android. You can check my portfolio and my linked in profile ar.linkedin.com/in/monicagerchinhoren/ Y have several mobile devices phones and tablets I'm very responsible and proactive.

    $13.33 /hr
    1,013 hours
    4.75
  2. Juan David Gil Diaz

    Juan David Gil Diaz

    Not Another Java Programmer

    Colombia - Last active: 2 days ago - Tests: 6 - Portfolio: 1

    During the last years, I have been working as an employee as well as an academical student/researcher with J2EE Web and J2SE stand-alone environments. During the last year I worked for PSL (www.psl.com.co), CMMI level 5 company qualified for their good practices and awarded with the Software Process Achievement Award by the IEEE and the SEI (Software Engineering Institute). In PSL I developed some modules for a large Web proyect called Impacta, sold to a important motorcycles assembler in Colombia. Impacta is a Web application module that communicates with the company's ERP through Web-services, it has a multi-layer arquitecture that supports a with a CRM like functionality. Impacta uses JSF(Java Server Faces) for its presentation-layer, along with Ajax, in its business-layer uses pure Java integrated with Spring and Web- Services(Xfire) and in its persistence-layer, a PSL's propietary persistence framework was used against an Oracle DB.

    $25.00 /hr
    2,676 hours
    4.95
  3. Petr B.

    Petr B.

    Senior Developer, PM

    Russia - Last active: 1 day ago - Tests: 5 - Portfolio: 2

    I have strong background in UNIX/Linux software development, Master's Degree in Computer Science. I worked on Enterprise high-load distributed hosting automation systems as a Team Leader (3.5 years in SWsoft, Inc., now called Parallels). For the last 6 years I'm running my own small software development business in Russia with primary focus on Python/Django apps. Not pure Web but often involving integration with hardware (Proximity Cards, Sensor Screens) or external systems like Payment Processing, SMS Gateways, GABRIEL (Airline Reservation System), etc. I can take an idea and turn it into a working business, through all the intermediate stages. Also I have experience of investing my own funds in my projects, so I feel the difference between "perfect code" in a month and "good enough" code that increases the revenue right now. Nevertheless, my code is very good: no copy-paste, always written with performance, flexibility and security in mind, etc. On oDesk I'm looking for (and actually find :) interesting projects with a sight on long-term fruitful cooperation. I'm also open to smaller activities (e.g., consulting) where my knowledge can be helpful.

    Groups: Coding Champs

    $40.00 /hr
    1,624 hours
    5.00
  4. Muhammed usama A.

    Muhammed usama A.

    Programming is a passion

    Pakistan - Last active: 1 day ago - Tests: 2 - Portfolio: 2

    Microsoft Dynamics AX Technical Consultant having 4 years experience. I have worked on both 2009 and 2012 versions having knowledge of almost every major framework including SSRS Reports, AIF, Enterprise Portal. Besides Dynamics AX, I also have expertise in C#. I have worked on all three platforms including Desktop, Web(ASP.NET) and Mobile(Windows Phone 7.5) I have also expertise on SQL and have worked on all major databases including Oracle, Sql Server and MySql.

    $22.22 /hr
    205 hours
    4.91
  5. Nazar Kuliyev

    Nazar Kuliyev

    Web Dev (node.js, RoR) - overall 15 years experience as programmer

    Kazakhstan - Last active: 15 days ago - Tests: 14 - Portfolio: 11

    Looking for interesting projects. 7+ years freelancing. 30+ projects done or assisted. Last 4 years mostly RoR experience. May fix/adjust/add features to your existing Rails app. I'm in asia (GMT +6), but may overlap with your working hours for at least 2 hours per day (skype, voice/webcam possible). I don't do graphics design, but can implement front end from blueprints (PSD). My skills include: ruby (Ruby on Rails), js (jQuery, backbone), HTML5, CSS3, git (github, bitbucket), heroku, ssh (managing linux servers AWS, Digital Ocean), mobile development (Phonegap), issue trackers (asana, github) Working environment: OS X, Ubuntu, Windows

    $22.00 /hr
    2,366 hours
    4.99
  6. Alexandr Mankov

    Alexandr Mankov

    Web Software Engineer (LAMP, AJAX, etc)

    Russia - Last active: 16 days ago - Tests: 6 - Portfolio: 2

    Looking for a position as a sr. developer / project manager.I have been developing software for web applications for over 10 years, I am well versed in PHP, Perl, HTML/CSS, JavaScript and Ajax. Also i am an expert in related areas as UI development, so I do not require constant supervision since I'm able to improvise in case the specs are incomplete and if I have permission to do so. I am working very fast, hiring me you get not only top quality, but reasonable price too.I have some ready-to-use functions\classes which comes with me from project to project, which allow me make custom code to easy handle high-load sites and don't require wasting time for routine tasks same time. I am online very often, including holidays, you can be sure you will be able to reach me within one day no matter what your timezone is.

    $66.67 /hr
    2,485 hours
    4.89
  7. Sergey Rogachov

    Sergey Rogachov

    Software Development,optimization, advanced problems solving

    Ukraine - Last active: 4 days ago - Tests: 10 - Portfolio: 2

    Why you should hire me , instead of cheaper alternatives? Because you get what you pay for . Who am i ? I am a software developer, team lead and project manager with more then 19 years in industry. My strong sides are: problem solving, optimization, reverse-engineering skills, focus on client needs, attention to quality and economics of the decisions, deep understanding of computer systems and software architecture. I worked on various projects for different industries like marine transportation, web application for computer-aided learning, mobile applications; security: iClass, rfid, reverse-engineering.

    $44.44 /hr
    552 hours
    5.00
  8. Darryl K.

    Darryl K.

    Darryl K. Java SE, EE and Android developer

    France - Last active: 9 days ago - Tests: 2 - Portfolio: 5

    I'm a JAVA EE Engineer working in Paris, France. As a developer, i use intensively the JAVA technology in almost all my works from shell application to Enterprise Application using JSF, EJB, Spring, Struts and Liferay technology. Beside my favorite technology -JAVA- i also use Pascal Object, C#.NET 4 and C/C++. For web technology, i used to work with PHP and JQuery. I publish some of my personal projects on my website : http://www.darrylsite.com/

    $20.00 /hr
    352 hours
    4.98
  9. Sergio S.

    Sergio S.

    JEE Architect - Developer / ExtJS Developer / DBA

    Guatemala - Last active: 20 hours ago - Tests: 5 - Portfolio: 5

    Highly skilled systems architect and developer with more than 30 years of experience designing, developing and deploying applications, from old single platform “green-screen” to multi-tier / distributed systems. Business experience in manufacturing, accounting, distributing, payroll, finance and TELCO: ✔ Strong knowledge of Java SE and JEE stacks, from early versions 1.x up to latest version SE 8 and JEE 7. ✔ Deep understanding of old technologies such Cobol, ISAM, flat files, pipes, “green screen”, etc. This knowledge allowed me to design, code and implement integrations between new applications with legacy ones. ✔ Solid leading and mentoring skills to help and encourage individuals to maximize their productivity by applying the best practices, frameworks, libraries and technology in general. ✔ I'm always learning about new technologies and tools to ease and reduce time spent in application development and deployment. Technology by itself is worth nothing if it does not solve real world problems.

    $45.00 /hr
    698 hours
    5.00
  10. Diego Blanco

    Diego Blanco

    Linux Systems Administrator

    Spain - Last active: 5 days ago - Tests: 7 - Portfolio: 3

    I'm an expert in GNU/Linux systems and other UNIX flavors. I have experience in CDN deployment, Cloud Computing, High Availability, Monitoring and Video Transcoding and Streaming. I've been working with GNU/Linux since I was 14, what makes more than 10 years of experience so I have a good background in its evolution, tools and administration. I also use to implement tools in shell script and python and I use to code my applications in python. In the last 6 years I've been working as systems administrator and Integrator for an IPTV company that offers streaming and web services. I directed projects regarding software distribution and upgrades automatization, product deployment architecture design and products monitorization. I co-designed and co-deployed the cloud computing platform for the company, its CDN with High Availability, its telephony system and other projects. I really like to learn new technologies, test its capabilities and see what can they do. I like to meet new people, work with them and share knowledge and opinions.

    $33.33 /hr
    711 hours
    4.92