Top Upwork Freelancers

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  1. Josh Ayers

    Josh Ayers

    Programmer/Analyst

    United States - Last active: 5 months ago - Tests: 2

    I have created and maintained systems to manage products listed on a retail website. I have worked in various aspects of business programming. (including those associated with barcodes, skus and ordering) I have nearly a decade of programming experience and have created numerous web services which are used in websites and mobile applications.

    $24.00 /hr
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  2. Zlatin Georgiev

    Zlatin Georgiev

    Developer

    Bulgaria - Last active: 4 months ago - Tests: 8

    I've been programming since 1981 and have fully mastered over 25 programming languages. I've developed my own Java and C++ knowledge bases, an automated system for building management, an ERP system, a multilingual dictionary program, a spreadsheet management system, a cash register system, barcode reading and printing systems, a scales management system, HTTP, TCP and knowledge base management servers, mobile Java games, a Modula-2 antivirus system, a mathematical system for calculating differential equations, a system for process optimization and other software. I have a higher university education of a mechanical engineer.

    $56.00 /hr
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  3. Dmitry Plotnikov

    Dmitry Plotnikov

    PHP / c# ASP.NET MVC programmer

    Russia - Last active: 6 months ago - Tests: 4

    I'm web programmer with strong PHP skills. In work I use such technologies as html / css / js (jquery), ajax, json, xml. Have experience with databases: MySQL, Oracle, PostgeSQL. Have experience of writing and supporting stored procedures. Have basic knowledge of NoSQL databases, MongoDB. I prefer to use Twig as template engine, Doctrine 2 as ORM and DBAL. For version control I use Git. Currently I write applications for corporative environment and I look for opportunity to get used with Jave EE technologies. As Java programmer I have a basic knowledge of Hibernate ORM, Maven, Spring framework.

    $10.00 /hr
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  4. Marcos Prieto

    Marcos Prieto

    .NET web developer

    Spain - Last active: 09/05/2014 - Tests: 11

    I'm an experienced and pasionate .NET web developer. I specialize in programming issues related to new technologies / tools and technically complex tasks. My developments are easy to read, clear and refactored, ready for future modifications. I have experience in working with customers in other countries who speak English and work remotely.

    $21.11 /hr
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  5. Ivan Klimchuk

    Ivan Klimchuk

    Java developer, QA specialist

    Ukraine - Last active: 04/28/2012 - Tests: 2 - Portfolio: 2

    Programming languages/Technologies: Java SE/EE, JavaScript. Version control systems: SVN, GIT Data bases: Oracle, MySql Build automation tools: Maven, Ant Continuous integration tools: Jenkins Software testing frameworks: Selenium WebDriver, LISA Software development framework: Spring More than 4 years experience on software quality assurance in different positions: quality assurance engineer, automation qa specialist, qa team lead. Over 1 years of experience as Java developer. Preferably web application using spring mvc framework.

    $6.00 /hr
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  6. Jordi S.

    Jordi S.

    Freelance System Administrator

    Spain - Last active: 02/02/2014 - Tests: 7

    System administrator of more than 30 Linux machines - specialized in daily systems maintenance of RedHat Enterprise Linux, CentOS and derivatives. Including tasks are patching and updating, developing, installing and maintaining utility programs/shell scripts to manage application start, stop, end-of-day, monitoring and failure/recovery. Pretty much aware of all typical UNIX/Linux services, especially specialized in Samba, Sendmail, Dovecot, Apache, Perl, ProFTPD, NTP, OpenSSH, MailScanner, Squid, SquirrelMail, SPF, Roundcubemail, Milter-Greylist, Bind, Fail2ban, NFS, NetAtalk, etc. Very familiarized with HP ProLiant series and HP system management software. Perl and C system programmer - please, see 'Monitorix' at http://www.monitorix.org a pure Perl monitoring solution, see also 'Fiwix' at http://www.fiwix.org a UNIX/Linux-like hobby operating system kernel as a reference. I also work with PHP (Ncurses), Perl and Shell scripting for daily system administration. I'm driving my own GNU/Linux service company at http://www.fibranet.cat and I'm happy to provide a wide range of professional services. I also have experience embedding GNU/Linux systems on a different x86 and ARM devices for vertical rock-solid tasks.

    $23.33 /hr
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  7. Van Nguyen

    Van Nguyen

    C#, ASP.NET, MVC, WCF, Web API, JQuery ...

    Vietnam - Last active: 04/11/2007

    Key Skills + 8 years’ experience in Software Development of Web application using C#, ASP.NET. + 4 years experience in Design Database using SQL server, My SQL and Access. + Have more than 3 years’ experience to working directly with Europe customer. + Well-reading comprehension the technical document and technical requirements. Functional Skills + Well - knowledge in the Analyst and design of Information System. + Well – knowledge in Object Oriented Programming. Technical Skills + Languages & Scripting: C#, ASP.NET (1.1, 2.0, 3.5, 4.0, 4.5), Web Forms, MVC, Web API(RESTful), WCF, LINQ, Ajax, JavaScript (Prototype and jQuery), XML, XPath, XSLT, FO-XSLT, CSS. + Databases: SQL Server, My SQL, DB2, Firebird, Mongo DB, Access. + Web Servers: IIS. + Development Controls: Telerik, DevExpress, AjaxControlToolkit, ASP.NET 2.0 AJAX Extensions, IoC(Castle Windsor, Ninject, Autofac), Auto Mapper. + Development Tools: Visual SourceSafe, TortoiseSVN, Microsoft Project, JIRA, Bugzilla, CruiseControl.NET, UML (Rational Rose), Microsoft Visio, Minjet Mind Manager Viewer, ANTS Profiler, HP LoadRunner.

    $6.67 /hr
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  8. Oleg Zaremba

    Oleg Zaremba

    JavaScript Developer

    Ukraine - Last active: 4 months ago - Tests: 1

    Strong knowledge of C++ (Object oriented programming, patterns, Standard template library (STL), Windows API), Ruby on Rails, MySQL, HTML, CSS(Twitter Bootstrap), Javascript (jQuery, Underscore.js, Backbone.js). Good knowledge of C# (Windows Forms and Silverlight); Jasmine and RSpec testing; Unicorn, WebBrick, IIS and Apache servers; GitHub, Heroku, PostgreSQL; Languages : Ukrainian (mother tongue), English (fluent), Russian (fluent), German (intermediate), Polish (intermediate); Leadership, communication, ability to work in a group; International volunteer (Germany, Berlin, 2011, 3 weeks; Spain, Barcelona, 2012, 2 weeks; Italy, Pigna, 2012, 2 weeks; Germany, Nagold, 2013, 2 weeks; Estonia, Tallinn, 2 weeks);

    $14.00 /hr
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  9. Odair Assis Sobrinho

    Odair Assis Sobrinho

    Full stack developer/Javascript/Node.js/Wordpress/PHP-MySql

    Brazil - Last active: 6 months ago - Tests: 3

    I have been in the IT field for over 15 years now. Full stack developer with skills in both front end web design/development and backend/server coding, deployment and performance tuning. As an active member of Wordpress community, I’ve been helping people from all over the world to create web sites that are beautiful and responsive, deployed on scalable and secure servers. Recently I’ve also been involved in Node.js web application development using the so-called “MEAN” Stack: MongoDB, ExpressJS, AngularJS, NodeJS.

    $35.00 /hr
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  10. Kujtim R.

    Kujtim R.

    Data scientist & machine learning engineer in NLP and Computer Vision

    Macedonia - Last active: 3 months ago - Tests: 3

    I am PhD student in Computer Vision. I have graduated at Technische Universität München in 2014. My master thesis was related with NLP, text mining and machine learning. I am interested in computer vision, NLP and web development. Also I do online algorithm competition. I love math, and during high school and primary school I have participated in national and international math competition. During master studies I have done these projects: Worked in Yelp data-set challange as part of practical course data mining. Task: Estimated business rating using features extracted from business reviews (sentiment features and n-grams), user information and business location. Achieved 91% classification accuracy. (Text mining, machine learning, WEKA, Java) System of automatic agents for Indexing Pubmed & Pubmed Central for rich text annotations - Solr, Java, Bash (information retrieval, indexing, searching) Road type recognition using random forests on “BMW Car IT”- Python, Machine learning Web application "Collaborative video note"- Java Play!,ElasticSearch, CSS, JPA ,JavaScript, CSS, Ajax, PostgreSQL, GoogleAPI) Bachelor studies: Designed and implemented small compiler - 10000 lines of code C++ and 4 "student web application" in .NET Awards and honors: 1st place Codefu Autumn 2014 – competition in algorithms December 2014 DAAD scholarship for Master studies in Technische Universität München - April 2012 Honor Best Student of Faculty of Computer Science and Engineering, “SS Cyril and Methodius” University, Skopje and in top 3 students of university – 26.11.2011– Skopje Student of generation at Institute of Informatics (FNSM)– December2009,2011 Successful participation in Balkan Math Olympiad for adults – May 2008 Macedonian Math Olympiad (MMO 16-20years old): Silver (April 2008), Bronze (April 2006) National Math Competition in Macedonia – II prize (March 2008, 2007, 2006), I prize (March 2005) Successful participation in MMO -(April 2008, 2007, 2006, 2005) National WideMath Olympiad “PLUS” (Macedonia, Albania, Kosovo) III-prize (May 2003, 2004) IIprize (May 2005) Student of generation, 7th march (2004, 2005, 2006, 2007, 2008)

    $27.78 /hr
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