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Code Refactoring Upwork freelancers typically receive a client rating of 4.85.

Last updated: October 1, 2015
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Samnang Chhun

Samnang Chhun

Expert Ruby/Rails Developer - Software Craftsman

Cambodia - Tests: 1 - Portfolio: 9

I'm among top 1% freelancers on Upwork. I have been developing software professional for the last 10+ years. I have have working on Rails since Rails 2.3 came out. Over the last 6 years, I have worked a wide range of applications using Ruby on Rails for startup companies. I have helped many US startup companies to build their team and grow with them.. I am agile practitioner, and Pair Programming lover, TDD/BDD, OO Design Principles, and OSS. I am an alumni of Ruby Mendicant University. Website: Github: LinkedIn:

Groups: Microsoft Certified Professionals

100% Job Success
$98.00 /hr
6,209 hours

Dmytro S.

Dmytro S.

Web/Software Developer - Java/Flex/Flash/3D/HTML/CSS/JS/Unity3D

Ukraine - Tests: 8 - Portfolio: 2

Over the last 8 years, I have developed a range of websites using HMTL, JavaScript, Tibco GI, Flex, Flash, Unity3D, Java(JSP, Servlets, Struts, etc.) and MySQL, MS SQL Server, Oracle including sites for startup companies, small businesses and very large CRM applications for bank with world name. My core competency lies in complete end-end management of a new website development project, and I am seeking opportunities to build websites from the ground up for you or your business.I also have good experience in the following areas: 3D development, OOP, SQL, Ajax and software design and testing.

$38.89 /hr
2,009 hours

Jahirul Islam Bhuiyan

Jahirul Islam Bhuiyan

System Analyst

Bangladesh - Tests: 15 - Portfolio: 1

self development and organizational skill development at management level. ► Highly motivated, dependable troubleshooter and problem-solver ► Customer-focused performer who is committed to quality in every task – from personal interaction with coworkers and users to high level of service provided to company/customer ► Valued contributor who performs confidently and effectively under pressure and thrives on challenge ► Excellent communicator and good listener ► Enthusiastic learner who quickly grasps concepts technical skills You can find me- at LinkIn at MVA

$11.11 /hr
168 hours

Vasily Liaskovsky

Vasily Liaskovsky

Salesforce developer / Java developer

Belarus - Tests: 8

5+ years of Java developing experience 4+ years developing on web worked with 6 different DB vendors 3+ years practice in javascript and jQuery 1 year of Salesforce experience more than 20 projects participated in Certified developer (though certification expired)

$9.00 /hr
308 hours

David B.

PHP/MySQL Developer Specializing in E-Commerce Platforms

United States - Tests: 9

Over the last 10 years, I have specialized in e-commerce. I got my start working on simple osCommerce installations. Since then, I have progressed to building and working with highly-customized and integrated platforms, becoming an expert in PHP/MySQL, HTACCESS, JavaScript, AJAX, jQuery, and XML. I have also had the opportunity to work extensively with many other frameworks and API's. I have a lot of experience with Google Adwords API, credit card and shipping interfaces, and numerous other external libraries. I enjoy challenge of optimizing applications for peak performance inventing new methods for automation, streamlining back-end operations, and providing custom analytics. I pride myself on being able to jump into a project quickly and to creatively solve nagging problems. Although I do have experience with HTML and CSS, I am in no way a designer. I am strictly a coder, and, simply put, I love my work. I have worked with over 180 clients on 275+ projects. Excellent communication skills and driven work ethic. I am a perfectionist, and I am not happy until the client is happy.

Groups: Application Developers Alliance

100% Job Success
$94.44 /hr
3,706 hours

Andrei C.

Andrei C. Agency Contractor

Creative iOS/BlackBerry/CrossPlatform Developer

Ukraine - Tests: 1 - Portfolio: 8

I'm a skilled iOS/BlackBerry/CrossPlatform developer who have already created a huge number of various applications. My passion is to create perfect code and make all the necessary to make bug-free applications. Also my English skills help me to contact with my clients and always be on the same page with them during development process.

Associated with: MobiDev

100% Job Success
$29.00 /hr
5,040 hours

Eugene B.

Eugene B.

Java Developer

Russia - Tests: 5

Over the last 7 years I have been involved in several performance-sensitive projects using Java, including video surveillance solution and stock trade automation system. My core competency is performance optimization, and I'm seeking the opportunities to enhance your application to run as smooth as possible. I also would not mind designing said application from the ground up, with performance in mind, of course. Last, but not least, I would be delighted to practice Haskell.

Groups: Sun Certified Professionals

89% Job Success
$35.00 /hr
19 hours

Valerii Karkachev

100% Job Success
$38.90 /hr
3,715 hours