Top Upwork Freelancers

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  1. Mariusz Plucinski

    Mariusz Plucinski

    C++/Java/Python programmer

    Poland - Tests: 7

    I am enthusiast programmer, focused on innovation. Being interested in wide area of IT-related jobs, including development of desktop applications, mobile applications, distributed systems and embedded systems. I have 4 years of experience in C/C++ programming. 3 years of experience in Python programming, 2 year experience in JavaSE and Android programming. Good knowledge of Linux, Android and OS X operating systems. Knowledge of many databases (MySQL, SQLite, PostgreSQL, Redis), various network protocols (HTTP, OpenID, OAuth, KNX, DNS, SAML), control version systems (Git, Subversion, Mercurial). I consider testing (both automatic and manual) as very important part of software development.

    $20.00 /hr
    868 hours
    4.88
  2. Pavel S.

    Pavel S.

    Java Developer

    Russia - Tests: 5

    In programming since 2004 (Oracle pl/sql in Banks). Now I am Java Developer (3 year of J2EE web development). I have involved in website development using JSF 2, JSP 1.2, JSTL 1.2, Servlet 3.0, Spring, JDBC 4.0, Tomcat 7, MySql. Experience in Maven, JUnit, Mockito, Git, Jirra. Understand HTML, CSS, Sql, Java Script. I want to strengthen my knowledge in J2EE with your greate Team. Also I want to become Java Enterprise Architect and work hard for this! Looking for any part time job upto 10 hours per week.

    $16.67 /hr
    36 hours
    5.00
  3. Sergey Kryachko

    Sergey Kryachko

    Embedded Software Developer

    Sweden - Tests: 5

    13+ years experience in software development for embedded systems, Automatic Control Systems, Mobile telephony. Deep knowledge of Real Time Operation Systems (RTOS), low level programming, serial communications and protocols, battery management, fuel gauge and charging area. Extensive experience developing in QNX, VxWorks, Linux/Android, RTL-ARM, OSE, Windows XP/Mobile/CE and DOS environments.

    $17.78 /hr
    172 hours
    4.10
  4. John Woo

    John Woo

    Microsoft .Net/SQL Developer using SQL Server and MySQL

    Philippines - Tests: 5

    • Known for excellent troubleshooting skills – able to analyze code and engineer well-researched, cost-effective and responsive solutions. • Expert in advanced development methodologies, tools and processes contributing to the design and rollout of cutting-edge software applications. • Able to incorporate user needs into cost-effective, secure and user-friendly solutions known for scalability and durability. • Has advance knowledge with MVVM Pattern, Dependency Injection. • Experienced in developing server-side database management system (DBMS) application. Skilled in dimensional modeling, database informatics, SQL Server, MySQL. • A logical, analytical thinker with excellent managerial skills possesses 3+ experience as Database Developer. • Extensive experience in writing stored procedures, functions and views, database query tuning and optimization. • Extensive experience in writing and tuning complex sub queries, SQL, PL/SQL stored procedures, functions, and triggers.

    $25.50 /hr
    21 hours
    5.00
  5. Denys V.

    Denys V.

    Business Intelligence, Java EE & Web applications

    Ukraine - Tests: 1

    SERVICES SUMMARY Full set of software development services (requirements analysis, architecture design, solution development, deployment and support) in the following areas: - Business Intelligence solutions (main focus at open source BI platforms, tools and libraries) - Enterprise & Web Applications (Java / Java EE) TECHNICAL SKILLS BI platforms: SpagoBI, JasperSoft, Pentaho BI Platform BI tools and components: JasperReports, BIRT, DynamicReports, JFreeChart, Highcharts, Google Charts, Dashboards, JPivot, JPalo, Mondrian OLAP server, Pentaho Kettle, Talend Data Integration, OLAP data warehouse, MDX, Apache POI (MS Excel data manipulation) Java EE development: Servlet/JSP, Web Services, JPA, Hibernate, Apache Struts, Apache Tiles Web front-end development: HTML, CSS, JavaScript, AJAX, JSON, SVG Databases: Oracle DB, MS SQL Server, PostgreSQL, MySQL Application / web servers: Apache Tomcat, JBoss AS, Jetty, Apache HTTP server, Nginx Operating systems: Linux, Windows Tools: MS Project, Atlassian Jira/Confluence, Eclipse IDE, Sybase PowerDesigner Software architecture: OOAD / OOP, MVC, distributed multi-tier applications, security, load-balancing PLUS Over 12 years of total professional experience in software development services. Strong communication and management skills. Possibility to involve additional team members (analysts, developers, QA etc) to complex projects.

    $27.78 /hr
    24 hours
    5.00
  6. Mikhail Medvedev

    Mikhail Medvedev

    Web Developer - Python, Javascript, Java

    Russia - Tests: 3 - Portfolio: 2

    I'm experienced back-end and front-end web developer. Interested in complex web projects. Specializations: Python (Django, Flask/Werkzeug, Google App Engine), MongoDB, Redis, Mysql, Postgresql for back-end. Javascript, HTML5, CSS3 for front-end development. Teamwork - Git, Mercurial, ticket systems. Integrating with third-party services. High-load web applications. Data mining: numpy, scipy, pandas, recommendation engines. "Code complete" is one of my favorite books and I have experience in writing unit-tests and clean object-oriented code. I'm result-oriented, highly motivated programmer who is passionate about quality of code and modern solutions.

    $25.56 /hr
    1,043 hours
    4.98
  7. Harsha Halgaswatta

    Harsha Halgaswatta

    Advanced Java/JavaEE Engineer

    Singapore - Tests: 1

    Well versed Java/JavaEE developer having more than 6+ years of hands on experience in Play Framework, MongoDB, RabbitMQ, SOAP, JAX-WS (WS-*), MySQL, Redis, NodeJS, Bootstrap, Spring, Hibernate, Google API, XSLT, Shell Scripts. Besides that I have done many Enterprise Integrations with e-Commerce platform with ERP and WMS using Java. Further I have contributed to many open source projects and clients in different domains. I love to use my free time in productive works helping people around. http://www.linkedin.com/pub/harsha-halgaswatta/38/a99/196

    $20.00 /hr
    238 hours
    4.78
  8. Dominik S.

    Dominik S.

    Expert Backend Python / Django developer

    Poland - Tests: 4 - Portfolio: 9

    Expert software engineer - Specialized in Python / Django - Using Django since 0.96 - Using Python since 2.4 - Experience with test driven development - Active open source contributor - Following all best Python / Django practices - Always checking code to obey PEP8 rules - Master degree in Computer Science - 7 years of experience. You can find code samples looking at github for project django-moderation The project has code coverage for more then 90%, code is written using test driven development.

    $44.44 /hr
    2,632 hours
    4.88
  9. Mariusz Z.

    Mariusz Z.

    Penetration Tester, Linux/UNIX Security Admin,Intrusion Analyst, CISSP

    Poland - Tests: 9 - Portfolio: 1

    I'm Linux Security Administrator & Web Application Penetration Tester with 8 years of experience in the IT field. I'm CISSP (ID# 478556) and OWASP member. My expertise ranges from designing, building secure & robust systems to analysis of subtle software security flaws. I can help you with: - thoroughly security testing your web application (black-box and/or white-box tests) and helping in mitigating detected vulnerabilities - analyzing and assessing vulnerabilities in your application's underlying IT infrastructure - security hardening Linux/UNIX servers/clusters - recommending solutions and best practices on how to design and maintain secure AWS infrastructures - responding to security incident in Linux/UNIX environment, helping in recovery process (rootkit detection, malware removal, etc.)

    $19.00 /hr
    123 hours
    4.79
  10. Tayyab Shabab

    Tayyab Shabab

    PHP, Javascript, Jquery, Ajax, HTML, CSS and Mobile App Developer

    Pakistan - Tests: 3 - Portfolio: 1

    I have been working as a web developer for more than 3 years. I work in zend framework, php, javascript, jquery, html, css. I also have a good knowledge of mobile apps. I can build mobile apps for Android, Iphone, Blackberry and Nokia. I have full potential to do any kind of work relating to my field. I will satisfy you through my work.

    $7.78 /hr
    442 hours
    4.74