Top Upwork Freelancers

Clear all filters
  1. Dmitry S.

    Dmitry S.

    Web, Desktop Developement, Consultant 15+ yrs experience

    Ukraine - Last active: 1 day ago - Tests: 3 - Portfolio: 9

    Areas of Expertise: ✓ Gathering and Analyzing Project Requirements ✓ C#, ASP.NET, MVC 3/4, WebForms, Delphi 1-XE5/Pascal ✓ JavaScript, JQuery, Twitter Bootstrap, Ajax ✓ JSON, JSONP, XML, (D)HTML, HTML5, CSS ✓ Entity Framework, Linq2SQL, NHibernate ✓ MS SQL Server 2005-2012, MySQL, SQLite, Interbase/Firebird, SQL ✓ Crystal Reports, FastReport, QuickReport ✓ SVN, Git, CVS, Atlassian Jira ✓ SOAP, REST, HTTP(S), FTP, TCP/IP, POP/SMTP ✓ Google API, Facebook API, SMS Gateway, Payment Processor ✓ OOP/D, UML, SOLID, Design Patterns, TDD, Agile, SCRUM ✓ Visual Studio 2005-2012, Resharper, dotTrace, FXCope, NUnit, Log4Net

    $25.00 /hr
    1,495 hours
    4.83
  2. Juan David Gil Diaz

    Juan David Gil Diaz

    Not Another Java Programmer

    Colombia - Last active: 5 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
    2,667 hours
    4.95
  3. Gennady Svarovskiy

    Gennady Svarovskiy

    Java/C++/Perl professional

    Russia - Last active: 1 day ago - Tests: 11 - Portfolio: 1

    I am Java developer specializing in web projects and I have good experience with different Java frameworks and technologies including (but not limited to) most popular Spring and Hibernate. Also, I created AJAX front-ends based on jQuery, Bootstrap and DoJo on client side and various REST API frameworks on server side. Besides that I like developing and implementing non-trivial tasks that go beyond traditional CRUD action. Due to good knowledge of GNU/Linux OS (and its most popular daemons: Apache, Tomcat, MySQL/PostgresQL, Postfix/Exim, Named/Bind, iptables) I also can offer full support of application life from initial server setup to continued maintenance after main development is complete.

    Groups: Coding Champs

    $38.89 /hr
    3,010 hours
    5.00
  4. Jason Smith

    Jason Smith

    Alpha Anywhere & Alpha Five Database Architect & Application Developer

    United States - Last active: 1 day ago - Tests: 5 - Portfolio: 1

    If you're looking for someone to develop your custom database application, look no further. I specialize in building and maintaining database applications using Alpha Anywhere. Formerly known as Alpha Five, Alpha Anywhere is a cutting-edge, front-end-to-back-end solution for rapidly building data-driven apps of every type—web, mobile, and desktop. I've been developing applications with Alpha 5 and Alpha Anywhere since 2007, working on projects such as statistical analysis, property management, inventory management, freight-forwarding, operations management, and more. Whether your project is an in-house desktop application, a website, or a data-driven mobile application, my skills are a good match. Check out my website at jasonmsmith.biz for more details. The come back here to start the conversation! I'll be happy assist you!

    $45.00 /hr
    1,042 hours
    5.00
  5. Gaurav B.

    Gaurav B.

    Expert Java,Scala Web Developer(JSF,Spring-MVC,Play,Hibernate,Jquery)

    India - Last active: 4 days ago - Tests: 1

    I have 8+ years of experience and I have worked with large (Oracle) and mid size (Zensar) companies. Languages : Java (6,7,8), Scala, Javascript Frameworks : Java Server Faces, Spring Stack, Java Persistence API, Hibernate, Play! 2, Secure Social, AngularJS, Underscore Technologies : JDBC, JNDI, Primefaces, Servlet, iText, OpenSAML, Apache HTTP Client, Jedis, Jackson, Cognos SDK Github : https://github.com/gaurav-bagga REST API : Google Admin SDK, Windows Azure Directory API, Salesforece API, Zendesk API Databases : MySQL, MS SQL, Apache Derby, Redis, LDAP User Interface : HTML, CSS, Twitter Bootstrap, Require JS Application Servers : Weblogic, Tomcat, Glassfish Testing : Junit, Mockito, Dbunit Build : Maven SCM : Subversion, Git IDE : Eclipse, Netbeans Operating Systems : Windows, Linux, Mac OS X

    $22.22 /hr
    1,405 hours
    4.67
  6. Wallace Ferreira

    Wallace Ferreira

    Software Analyst/Developer

    Brazil - Last active: 1 day ago - Tests: 10 - Portfolio: 2

    Hello, my name is Wallace. I've been working with software development for over 9 years. I acquired a lot of experience developing applications using Visual Basic, C/C++, PHP and Java. My expertise is analyzing and developing Desktop and Web Applications such as: + Crawlers/Web Crawlers - Collecting and storing data from sites, documents, videos, photos, social media sites, classified ads sites, etc. + Web Data Scrappers - Extracting, parsing, filtering and storing relevant data from web pages to readable and manageable formats like Excel, CSV, HTML, etc. + Bots and Automation scripts - Extracting and making business decisions out of data from documents like PDFs, Excel, CSV, XML, TXT, etc. - Sending email reports automatically - Auto filling forms - Price comparison apps - Event notifiers + Data conversion/transformation - Transforming/Converting data between formats for import/export in different applications. - Feed generation - Report construction + API development/integration - Adding support for third parts services - Creating interfaces for communication between systems. I have developed dozens of applications for a wide range of application domains including: - E-Commerce sites (like Amazon.com, Walmart.com, ToysRus.com, etc) - Financial market - Market research groups - Medical related groups - Shipping companies - And several other personal applications. Some formats I have expertise in are: - JSON - XML - SQL - CSV - PDF - TXT - HTML - XSL - XSLX - And others Acting as an analyst and developer, I gained experience with modeling relational databases and SQL, with a focus on MySQL DBMS. Since 2009, I have been working for a company that develops software for the financial market - EconoInfo (http://www.econoinfo.com.br). In 2012, I graduated in Computer Science at the Pontifical Catholic University of Minas Gerais - PUC Minas. Over the past four years, I specialized in Java development, especially Java EE 6.0, focusing on technologies EJB, JPA, JSF, JMS and JCR. Acting as an analyst and developer, I gained experience with modeling relational databases and SQL, with a focus on MySQL DBMS. As a developer in charge of creating the EconoInfo website's interface, I also specialized in Servlets, HTML, JavaScript and CSS.

    $27.78 /hr
    963 hours
    4.95
  7. Darryl K.

    Darryl K.

    Darryl K. Java SE, EE and Android developer

    France - Last active: 5 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
  8. Valentin G.

    Valentin G.

    Software engineer (C/C++, obj-c, Python, Matlab, R, ML algorithms)

    Belarus - Last active: 2 months ago - Tests: 7 - Portfolio: 5

    The last 5 years I have worked mostly as a C and C++ developer in a field of process automation and control (SCADA). Familiar with OOP and TDD, Design Patterns and different methods of software development (waterfall, agile). I have a good experience in the development of multithread client-server applications, windows services, dll-s and cross-platform libraries. One of the specific features of my job was writing readable and easy-portable C-code covered with tests.Another interesting feature is working in small groups dealing with frequently changing goals. The major benefit of this style of work is a great experience on all levels of software development process (from project design and requirement development to final tests). Besides, I have a great interest in the research of new technologies and IT science related fields.

    $25.00 /hr
    549 hours
    5.00
  9. Yury M

    Yury M

    Java Web Developer / Web Scraping (scrapy, selenium)

    Belarus - Last active: 1 day ago - Tests: 4 - Portfolio: 5

    More than 5 years of java development (spring, MyBatis (iBatis), jersey, struts, jsp, jquery, dwr, quartz, spring security, hibernate, grails, nodejs, angularjs). Databases: Oracle, PostgreSql, MySql. Web scraping(scrapy, beautiful soup, lxml, phantomjs and selenium frameworks) Good skills in linux (installation, configuration, bash scripting). Python scripting (sites scrapping, client-server applications, xml and html parsing, small scripts for administration needs)

    $30.00 /hr
    258 hours
    4.99
  10. Kalpesh Tawde

    Kalpesh Tawde

    Master Perl Developer and Web Scraping Expert

    India - Last active: 3 days ago - Tests: 1 - Portfolio: 1

    + I am an expert Perl, Python, PHP developer and has total 7 years of experience in the IT field. + Expert in creating crawlers, scrapers, bots for various uses such as data mining and extraction, simulation of user activity, auto bidders, auto voters, system monitoring, content downloading and many more. + Key skills include Perl scripting, Shell scripting, Python scripting, Web scraping, Web crawling. PHP, C++, Java, MySQL, Oracle, Sybase and Shell scripting and have relevant experience in the same technologies. + I also provide application enhancement and support. + I believe to deliver solutions that are optimized, re-usable, hand-tweaked and thoroughly tested. + Along with the solutions I also provides all documentation and user manuals. Contact me today!

    $15.00 /hr
    361 hours
    4.93