Top Upwork Freelancers

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  1. Kirill P.

    Kirill P.

    Asterisk Expert and System Administrator

    Russia - Last active: 2 months ago - Tests: 10

    I work on IT more than 12 years. VOIP/Asterisk Developer, Expert System Administrator and Network Administrator, Perl Programmer. Generally, I develop solutions based on Asterisk and speech technologies (speech synthesis and speech recognition systems), complex IVRs, integration with external sources and databases, custom click-to-call and callback systems, etc. I prefer custom development for Asterisk and FreeSWITCH. Usually, I use Perl for development. I have huge experience in solutions based on Asterisk such as FreePBX, Elastix, Trixbox, vicidial, etc. Also I support critical 24x7 systems, administration networks and servers, perform IT consulting, etc.

    $25.00 /hr
    10 hours
    5.00
  2. Yuriy A.

    Yuriy A.

    Expert Java Developer (Server Side)

    Russia - Last active: 1 month ago - Tests: 3

    Over the last 8 years, I have developed a wide range of software solutions using JavaSE/JavaEE. Last three years I have been working as Java Expert who helped java-team and QA-team to solve complex problems. Special Skills: 1) Multithreading 2) Integration 3) Improvment/Optimization 4) Jetty/Servlets/HTTP/JAX-RS/JAX-WS 5) JMS (ActiveMQ/Fuse) 6) Hibernate/SQL (MySQL, Oracle, MSSQL) 7) Morphia/NoSQL (MongoDB) 8) SMPP 9) XML/XSLT/JSON 10) HTML Parsers/Spiders/Bots 11) Security 12) JUnit/Mockito/DBUnit/Cobertura 13) Maven/GIT

    $30.00 /hr
    20 hours
    5.00
  3. Christian Londono

    Christian Londono

    Mobile and Web Developer.

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

    Christian Manuel Londoño is a recent graduate from MIT with a bachelors in Computer Science and Engineering. Christians areas of focus are web development and android application development. He enjoys working on small teams and on work that is critical. He finds pride in working on projects in which he interacts with the clients, and is able to provide a product that caters to their needs.

    $44.44 /hr
    808 hours
    4.85
  4. Denis N.

    Denis N.

    Software Engineer

    Russia - Last active: 1 month ago - Tests: 10

    I started programming at age of nine and have accumulated incredible amount of experience since then. Also the years of serious participation in programming competitions have forced me to learn a lot of non-trivial programming algorithms and trained me to write highly efficient quality code. At the first stage of my career my passion was game development. Now I mostly enjoy programming applications for web, mobile and desktop. My main priorities in software development are: - paying great attention to quality of my code; - caring about code maintainability and testability very much; - striving to learn new techniques that help improve my productivity even more.

    $30.00 /hr
    387 hours
    5.00
  5. Rui Gomes

    Rui Gomes

    Web Developer - Proficient in PHP, Laravel, Javascript, Ruby on Rails

    Portugal - Last active: 3 months ago - Tests: 4 - Portfolio: 3

    I've worked closely with world-class companies throughout the development of outstanding platforms that have been used by thousands. I'm proficient with PHP and I'm also a Laravel early-adopter - I've been using it since early version 3. I've developed countless applications with Laravel, attended the Laracon conference in Amsterdam and I've written several tutorials that have helped hundreds of other developers. In addition to PHP, I've also used Ruby on Rails extensively to develop complex web applications with full featured test suites. Being a Software Engineering student, you'll be sure to get solutions that are well designed, easy to scale and develop upon. I've taken a CAE (Certificate in Advanced English) by the University of Cambridge and passed with flying colours. Communicating with me won't definitely be an issue. Looking forward to working with you on your next web app!

    $50.00 /hr
    168 hours
    4.99
  6. Maryia R.

    Maryia R.

    Android developer

    Belarus - Last active: 10/31/2014 - Tests: 1

    I am certified Java developer with 3+ years experience in Android. Worked with such technologies as JSON, HTML, XML, Oracle Database, MySQL. Also I have some experience in such Java technologies like Spring, Hibernate, Struts, JSP and others. I'm responsible, creative and hardworking developer and I'm always interested in finding new projects, where I can realize my knowledges.

    $22.22 /hr
    207 hours
    5.00
  7. Alexey Artamonov

    Alexey Artamonov

    Senior Ruby on Rails Developer and Team Lead

    Russia - Last active: 6 months ago - Portfolio: 5

    Software Architect and senior developer which employs communication and technical skills to build and lead teams in designing and implementing web apps or enterprise services. Builds solutions using Ruby based frameworks, refactoring existing projects. Specialties Strong developer skills include OOP, web application architecture, data modelling, etc... Domains: E-commerce, Business Directory Methodologies: Agile Development, Behavior Driven Development Platforms: Linux Languages: Ruby, JavaScript, C/C++ Databases: MySQL, PostgreSQL, MongoDB Others: Git, GitHub, PivotalTracker

    $42.00 /hr
    3,208 hours
    4.91
  8. Garik K.

    Garik K.

    ISTQB certified Senior QE, 14 years exp., Java, Selenium, Automation

    Czech Republic - Last active: 2 months ago - Tests: 10 - Portfolio: 1

    Having around 14 years of experience in IT (as Developer and QE) I have been working (as permanent & freelance) for various big companies, leading and/or developing test frameworks for the API, webUI projects mainly focusing on automation in Java, Python, PHP, Shell scripting. Various IDEs and automation frameworks were chosen like: Eclipse, Vim containing Junit3, Junit4, TestNG, Selenium {1.x; 2.X,}, Nose tools for developing the framework around them. WebUI tests were running under win/linux platforms for IE, Firefox, Google Chrome, Opera, Safari. The place to track the defects were/are: Mantis, Bugzilla, Jira I am familiar (and using in my daily routines the CLI of them) with CVS, SVN, Git source control systems. My growing knowledge in Linux scripting and administration gives me chances to develop and use helpful utilities (installers/etc) in the shell as well. The DBs I workedwith: foxpro, mySQL, Postgres, MongoDB, Oracle Recently the idea of Continuous Integration (CI) Testing becomes vital for companies for their testing: I used to work with Jenkins (aka: Hudson) with its tons of plugins and fund it really exciting. All my recent project I'm constantly using under Jenkins now :) OS-s: Win (old platforms), Windows 7, RHEL {4,5,6}, Fedora {10-15}, CentOS {5,6}, Ubuntu, Amazon Linux Recently: got ISTQB certification.

    $28.90 /hr
    4,349 hours
    5.00
  9. Yuri M.

    Yuri M.

    Java/C++/DB Developer

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

    7+ years experience in various projects. In my development practice I've worked on both desktop and web-projects where I've used different libraries and frameworks. I have experience in such areas: * as Java developer: Swing, SwingX, EJB 3, Struts, Spring, GWT, Hibernate, JDBC, JSP, XStream, Jetty, JUnit * as DB developer I've worked with MySQL, Firebird, MS SQL Server, PostgreSQL, H2. * as C++ developer: boost library, ability to write cross-platform code, MFC, Qt * worked with applications for project designing: Rational Rose, Visual UML, StarUML, Microsoft Visio. Good understanding OOP and data-store concepts. Also I have some experience in following areas: Microsoft .NET, Ruby on Rails, PHP and Python.

    $30.00 /hr
    4,048 hours
    5.00
  10. Stefan Thorpe

    Stefan Thorpe

    AWS Architect and PHP Coder

    Hong Kong - Last active: 1 month ago - Tests: 2 - Portfolio: 1

    IT professional with 13 years of management and hands-on experience providing technical solutions to support strategic business objectives: ► Articulate and deploy complex/hybrid public and private cloud solutions on Amazon Web Services. ► Design, develop and implement PHP solutions. ► Provide the shape of technological solutions across Unix systems. ► Analyze software and configuration requirements and specify requirements. Check out Http://smarterer.com/stefanthorpe for my test score in AWS, PHP and more.

    $45.00 /hr
    313 hours
    5.00