Top Upwork Freelancers

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  1. Giang Le

    Giang Le

    Full-Stack Groovy/Grails Developer

    Vietnam - Last active: 2 days ago - Tests: 5 - Portfolio: 3

    Full stack developer with lots of experience in Grails, Java, J2EE, Hibernate, Spring, Struts, SpringBoot. Professional and academic background on architecting and building Multi-Tenant Software as a Service. I am a member of jcabi team. jcabi is a collection of small and useful Java components, which are not big enough to make their own projects. (http://www.jcabi.com/) I am also proficient in making bots,web crawlers, email scrapers , automation tasks based on selenium web driver/htmlunit and jsoup. I have been heralded as the "bot master" by various clients I have worked with due to my outstanding performance in automation jobs. My skill sets include: * Languages: Java, Groovy, SQL, C, Ruby, CSS, HTML, JavaScript, PHP * Frameworks Grails, Bootstrap, Ruby on Rails, Hibernate, Hadoop, Spring, SpringBoot, YII, Laravel * Libraries/APIs Java Collections, jQuery UI, jQuery, JAX-RS, Google Gson, JavaMail, Amazon API, Asterisk-Java, Selenium, HTMLUnit, Jsoup * Databases: - Relational: Mysql, PostgreSQL, Oracle, DB2; - NoSQL: Redis, Memcached, SimpleDB; In my case, I enjoy working with small businesses and individual decision makers to provide architectural and custom business solutions that help my clients resolve mission-critical problems, grow their business, and improve their revenue stream and profitability.

    $33.33 /hr
    5,952 hours
    5.00
  2. Sophy Ung

    Sophy Ung

    Ruby/Rails/JavaScript Developer

    Cambodia - Last active: 12 hours ago - Tests: 2 - Portfolio: 7

    I am among the top 1% of freelancers (https://twitter.com/odesk/status/364622388165492736) and a verified web developer on oDesk. I have more than 7 years of experience in software engineering, particularly web development. Over the last 6 years I have developed a variety of business applications using Ruby, Rails, JavaScript, PostgreSQL, MySQL, MongoDB, Redis, Amazon EC2 and Heroku. I am interested in building quality software. I do not write code that just work, but also well designed, easy to understand, maintain and extend in the future by using test-driven development (TDD).

    $100.00 /hr
    5,375 hours
    5.00
  3. Maksim Kudrytski

    Maksim Kudrytski

    Senior UX/UI Graphic Designer

    Belarus - Last active: 12 hours ago - Tests: 4 - Portfolio: 3

    my skype: maksim.kudrytsky I was working in game dev for 2 years, timemanagement companies for 3 years. I'm a founder of the game company Fatenation. Artist and developer http://fatenation.com, also it's available through the appStore. I have a good experience in design of SAAS and any other human interface systems, design for mobile os games and commercial apps. I'm working with HTML, DHTML, Angular, MySQL, JAVASCRIPT, CSS I also have some experience in the following areas: SQL, Ajax, Wpf, OOP, SQL SERVER, .NET, DELPHI and software design and testing.

    $27.78 /hr
    3,301 hours
    5.00
  4. Manoj P.

    Manoj P.

    SharePoint & Office 365 Consultant (MCTS, MCP in SharePoint, Master)

    India - Last active: 3 days ago - Tests: 2 - Portfolio: 6

    Over the last 9.5+ years, I have been working across different Microsoft technologies & the SharePoint Server (SPS 2003, WSS 3.0, MOSS 2007, SharePoint Server2010, SharePoint Foundation Server 2010, SP 2013 & Office 365) using C#, ASP.NET(2.0 to 4.5), ADO.NET. I have more then 1500+ hours experience on ODesk for a challenging works. Organizational Experience : - I have got vast experience of working for big IT software companies to the start-up like environment where I have contributed massively to the project and delivered complex projects from the scratch. - I have been building n-tiered systems, Object Oriented applications, Windows/Web based systems and enterprise collaborative platforms using Microsoft technologies. - I have more then 5+ months experience at client side (USA). Technical Expertise: SharePoint Technologies : SPS 2003, WSS 3.0, MOSS 2007, SharePoint Server2010, SharePoint Foundation Server 2010, SP 2013, Project server 2007 , Office 365 Operating Systems : Microsoft Windows Server 2000/2003/2008 R2/2012 Version Control : VSS, Tortoise SVN, TFS Languages : C#, C++, Java Script, HTML, XML, PL/SQL Web Technologies : ASP.NET, XML, DHTML, HTML, CAML, SharePoint Designer 2007/2010/2013 Component Technologies : Web Services, SOAP, REST, Client Object Model Databases: SQL Server 2005/2008/2012 Other Microsoft Products: MS CRM, MS GP 9.0

    $27.78 /hr
    1,844 hours
    5.00
  5. Yaroslav Pugach

    Yaroslav Pugach

    C++, C#, Delphi, PHP, Qt, GTK, MySQL, MSSQL, SQLite

    Ukraine - Last active: 12 hours ago - Tests: 7 - Portfolio: 8

    Over last years I worked on different software projects: database applications written primarily in C++ and based on MS SQL Server (sales manager, taxi dispatcher etc); network applications in C++ and C# (remote administration tool, file server, multi-player game etc); archiving and encrypting applications; 3D-graphics applications using OpenGL (e.g. traffic modeling system); multimedia processing applications (images/video converter, spectrum analyzer for WAVE-audio); MS Office interoperation applications (Word reports generators, Excel workbooks analyzer); system/hardware tools (USB safe removal plugin, system info tool etc). I would like to work on interesting projects esp. those connected with system programming and multimedia. I also have knowledge in the field of web-programming (PHP, HTML, JavaScript, MySQL, CMS Joomla).

    $23.00 /hr
    10,493 hours
    4.80
  6. Pasqualino Ferrentino

    Pasqualino Ferrentino

    Software Architect

    Italy - Last active: 12 hours ago - Tests: 17 - Portfolio: 1

    I am a computer scientist whose main skills are in the field of data analysis, pattern recognition, statistical software, machine learning and large scale system design and integration. I have developed systems using Neural Networks, Markov chains, Support Vector Machines in various applications: OCR, image processing, data analysis, text indexing and retrieval. I am also proficient in 3D image visualization using common off the shelf libraries and methodologies, either low or high level, like OpenGL, DirectX, VTK, Java3D. I understand and use common ray tracing programs. I understand image processing topics like segmentation, thresholding, classification. I have worked in the past in a 3d Face recognition European project. I know the OpenCV library quite well. In the field of "general programming" I have a good understanding of Databases, multi threaded applications, sockets, pipes, encryption (symmetric and asymmetric), compiler design, operating systems, low level data structure in memory and on disk, data integrity. I consider myself an expert in data structures and algorithms: trees, queues, lists, b-trees, hash tables; I use standard libraries like STL, Boost, Java generics. I have a good knowledge of SQL and data normalization however I have also used custom No-SQL databases like Datadraw, MapDB, Tokyo Cabinet, Zope. I know all the basic algorithms and templates used in every day coding; regarding data integrity and security. Compression (lossy and lossless), symmetric and asymmetric encryption, public certificates, I have worked with OpenSSL programming, encrypted web services, packet sniffers. I am proficient in all the common every day languages with an emphasis on C++ and Perl. But I can use: Java, Python, Visual Basic, C#, PLSQL, Delphi. I know all the Object Oriented Programming concepts and design patterns and I use them if the need arises, but I am also able to write object-free programs in C or functional languages (like Haskell or Scheme). I know modern version control systems like git and mercurial, even if I can use also older ones like Subversion or CVS. I know Windows programming and API quite well. I have used WPF and WCF to create desktop applications in Windows and web services. I have used Linux and Gui toolkits like Qt which are platform independent. I know XML, XSL, I have used several parsers like the MsXML or Xpath. I know how to validate a XML with a schema. I have worked with a team that handled thousands of XML documents relating to air crashes in a SQL server database. I am able to talk and write in English with fluency. If anything is not listed here either I have forgotten to list it or I can probably learn it quite fast, so don't hesitate in asking!

    $24.41 /hr
    7,113 hours
    4.97
  7. Farhan Anjum

    Farhan Anjum

    Senior Web Developer/Architect - C#, MVC, Jquery, SQL, HTML, CSS

    Pakistan - Last active: 5 days ago - Tests: 5 - Portfolio: 40

    Over the last 8 years, I have developed a wide range of websites using ASP.NET, C#/VB.NET, MVC, Entity Framework, AJAX, SQL Server, MySQL,HTML, CSS and JQuery including sites for start-up companies, medium level organizations and small businesses.I have also developed Desktop application including some Mega Applications. My core competency lies in complete end-end management of a new website development project or Software and I am seeking opportunities to build websites/Software from the ground up for you or your business. I also have experience in the following area(s): Web Services, Web API, WCF, SOAP, XML, JSON, MongoDB, DOM and Javacript

    $27.78 /hr
    4,257 hours
    4.96
  8. Oleg Vakheta

    Oleg Vakheta

    Go/Golang/Perl/MySQL/JavaScript Developer, Linux Administrator

    Ukraine - Last active: 25 days ago - Tests: 9

    I love Go, Perl and Linux )) Have more then 7 years experience in Perl developing, more then 2 years in Go and I'm also passionate Linux administrator. Now I'm concentrated in developing for Web, using Go, Perl+fastcgi+nginx. I made many parsers, system scripts, web systems. My main directions in work: - Go (Golang), Revel, Martini, pure "net/http" for handling routes; - Perl developing ( web systems, scrapers/parsers, system scripts ); - Web developing, using: Perl, Javascript, Jquery, Ajax, HTML, CSS; - Linux administration; - MySQL server and queries optimization for high loading systems; - PostgreSQL - queries optimization, writing functions, triggers; - security audit; - SEO. I am open for new knowledge and critique.

    $27.78 /hr
    1,605 hours
    4.62
  9. Tanmoy S.

    Tanmoy S.

    Web Developer | Android Developer

    Bangladesh - Last active: 1 day ago - Tests: 13 - Portfolio: 2

    Greetings. I'm basically a programmer working with Web & Android application development over 8 years. I've strong knowledge on OOPHP/MySQL/MongoDB/JavaScript (jQuery)/Node.js and CMS on those like WordPress and Joomla. For MVC, I work with PhalconPHP and Laravel. I developed at least 600 WordPress based website which included different themes, plugins, custom themes & plugins development, custom field/meta/taxonomy/cron etc. Using Laravel & Phalcon, I developed more than 100 high-end applications. I'm very skilled in REST API based projects. I develop API as well, JSON/XML or SOAP whatever needed. I'm working as an Android and iOS developer since 2011. I'm highly skilled in SQLite Database, HTTP/Socket connection, File, Media, In-App Purchase, Google Play Licensing, Camera, Location, Sensors etc. based projects. I use Java for Android Development, Swift for iOS. I'm an expert in managing servers. CentOS (Mainly any RPM based distros) and Debian is my first preference. Hence I prefer Nginx for performance. Mongodb for large application server. in AWS services like Beanstalk, Private Cloud, Amazon SES, EB Storage, Route 53, RDS, Amazon DynamoDB I've excellent knowledge. I deployed over 50 application in AWS EB. For my expertise, dedication and hard work, I always got great feedback from client. What you're still waiting for? Just hire me to get your project done.

    Groups: Application Developers Alliance, AWeber...

    $33.33 /hr
    1,670 hours
    5.00
  10. Alex German

    Alex German

    Web Programmer. PHP/MySql, Ajax, HTML5/CSS3, Wordpress CMS

    Ukraine - Last active: 2 days ago - Tests: 8 - Portfolio: 7

    I am currently looking for the full time/part time PHP/MySQL programming job for a company or individual and would like to get committed for a long term collaboration with a reliable service buyer. Experienced in the following areas: - PHP - MySQL - Ajax - Java Script - XHTML/CSS Frameworks: - Symfony - YII - Kohana - CodeIgniter CMS: Wordpress, Prestashop Also: Linux, Apache, MVC, SVN, GIT, Mantis/Jira/Redmine

    $38.89 /hr
    8,799 hours
    4.99