Top Upwork Freelancers

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  1. Sergey B.

    Sergey B.

    Unix administrator, Web-based solutions, VoIP, Hosting, CMS expert

    Ukraine - Tests: 5

    From large IBM 360 mainframe monsters to modern ISP- and enterprise- oriented servers, more than 16 years, I'm working in the industry of an information technology. I have a large experience to install and configure server's hardware and software, another network equipement, to keep them in working conditions, to work in hosting-oriented team as administrator. At last years my focus of interest has extended to web-oriented applications, such as CMSs, corporate project managing software, and website developement projects with corresponding and supplementary software. Also my competency lies in server-side network services, including web-servers (not only Apache), SQL, DNS, Xen, OpenVZ, VoIP PBX, etc..etc

    $17.78 /hr
    286 hours
    5.00
  2. Jarosław Gilewski

    Jarosław Gilewski

    Senior Software Developer

    Poland - Tests: 2

    I have almost 10 years experience in Java/JEE/Javascript. Directed mostly on web applications and services development using the following technologies and frameworks: Hibernate, Spring, Jquery, Seam, JSF, CDI (Weld), JEE, EJB 3, REST, JPA, Richfaces, Primefaces, HTML, CSS, JavaScript, Arquillian, JBoss/WildFly, Tomcat, MySQL, PostgreSQL, Oracle. Very good experience on developing pure JavaScript applications (SPA) using Node, MongoDB, Backbone, Marionette and testing them with Jasmine, Mocha, Sinon, PhantomJS and Selenium. I'm always focused on building a successful software solutions for my employer. Strong relationship builder, resilient and motivated by success.

    $35.56 /hr
    92 hours
    5.00
  3. Juan Manuel García Del Moral

    Juan Manuel García Del Moral

    Sr Unix/Linux Management and Infrastructure Expert

    Argentina - Tests: 2 - Portfolio: 6

    I have 12 years of experience in Unix/Linux Administration and Development. During this time, I've developed professional solutions using the following technologies: Linux, Unix, Perl/Bash Scripting, Apache, MySQL, PHP, Tungsten Replicator, XEN, VMWARE and more. My main goal is to become your preferred IT partner when you need to get any project done. I want to build a strong and long term working relationship with increasing benefits to both parties. I strive on customer satisfaction regarding: - Time and Cost Effectiveness - Quality Assurance - Outstanding product performance - Fluent and Friendly Communication - Availability.

    $25.56 /hr
    329 hours
    4.92
  4. Aleksey Zhuravlev

    Aleksey Zhuravlev

    Responsible skilled Web Developer, Javascript and PHP expert

    Russia - Tests: 4 - Portfolio: 1

    I have over 5 years of experience in Software Development. Excellent in web application and data warehousing. • Deep knowledge of JavaScript, PHP and HTML/CSS (jQuery, Backbone, Handlebars, Express, Silex, Kohana, Smarty, Twig) • High experience in SQL and PL/SQL (MySQL, Oracle 11g) • High experience in VCS (subversion and git) • Experience in node.js • Experience in Apache httpd and nginx • Experience in mongoDB • Experience UNIX/Linux and Windows operating systems administration

    $27.99 /hr
    354 hours
    5.00
  5. Muhammad Emam

    Muhammad Emam

    Software Engineer

    Netherlands - Tests: 6 - Portfolio: 3

    Who I am: Software Engineer with extensive experience in Python programming, Cloud Computing, NoSQL datastores and large-volume data analytics. What I do: - Designing and implementing highly scalable, highly available software. - Analyzing business data-models and building appropriate analytics platforms. - Maintaining and developing existing systems to help businesses achieve lower Time To Market.

    $44.44 /hr
    268 hours
    5.00
  6. Zinovii D.

    Zinovii D.

    Experienced Flex/AS3/Java developer

    Ukraine - Tests: 3

    My objectives is to find interesting intermidiate-to-long term project. To be a member of growing team or to be independent senior developer. My technical skills includes: • Languages: Java, ActionScript (Flex), Python, Perl, PHP, C#, C, C++, Object Pascal (Delphi), JavaScript • Web Experience: Java, JSP, ActionScript (Flex), Python, PHP, CGI scripts, mod_perl, XSL, XHTML, ASP, CSS, JavaScript • Operations Systems: Linux (Ubuntu/Debian, RedHat/Fedora, Mandrake), Windows (9x, 2K, 2K3, NT, XP, Vista), Unix (IRIX) • Databases: MySQL, PostgreSQL, MS SQL Server 2000, IBM DB2, Paradox, PL/SQL • Other Tools/Frameworks/Libraries: Wicket, Lucene, Axis2, Hibernate, Xapian, BlazeDS, PureMVC, Cairghorm, STL, OpenGL, COM, ActiveX, MPI, ADO.NET, WSDL and REST WebServices, GWT

    $20.00 /hr
    395 hours
    5.00
  7. Filip Popovic

    Filip Popovic

    Vaadin/JavaEE/Spring

    Serbia - Tests: 3 - Portfolio: 1

    For the past 5 years, I have developed a wide range of Java enterprise businesses solutions. I am competent in complete end to end development process, and I am seeking opportunities to build enterprise solutions from the ground up. I'm currently focused on developing Vaadin applications with Spring and Hibernate. I also have experience in the following areas: OOP, OOD, BPM, SQL, NoSql, C/C++,Python, HTML,CSS,JavaScript, Testing etc.

    $33.33 /hr
    382 hours
    5.00
  8. Elvir S.

    Elvir S.

    PHP/MySQL/NET Developer, Web Programming And Consulting

    Bosnia and Herzegovina - Tests: 5 - Portfolio: 3

    Over the last 25 years, I have developed a wide range of software using C, C++, Visual Basic on Windows and Unix platforms, targeting financial, engineering and scientific area. Today, I am focused on web applications using HTML, JavaScript, PHP, and MySQL including sites for small businesses, modification of running systems (CRM, CMS), maintenance of existing installations and fixing various issues like code bugs and server configuration.. My core competency lies in complete end-end management project task and ability to work in other area, if necessary. On other side, I am focused on Microsft NET technology, where I develop desktop and web applications based on ASP.NET, targeted to local companies and covering accounting, finance, human resources and other.

    $17.00 /hr
    26 hours
    4.95
  9. Serhiy T.

    Serhiy T.

    Linux, FreeBSD, Windows, Network, Apache, MySQL System Administrator

    Ukraine - Tests: 12 - Portfolio: 1

    - Operating systems: FreeBSD, openSUSE, Red Hat, CentOS, Debian, Ubuntu, Gentoo, Windows: 2000/2003/XP/Vista/7, Mac OS X: 10.4-10.6 - Programming languages (basic level): Bash, PHP, Perl, SQL, C, Objective C, html - Network protocols: TCP, UDP - Network services: DNS, FTP, HTTP, HTTPS - Web Servers: Apache, Nginx, Tomcat - MTA: Postfix, Qmail, Exim - FTP Servers: Pure-ftpd, Proftpd, vsftp - Firewalls: ipfw, ipchains, iptables - Network tools: route, iproute2, natd, tcpdump, netcat, trafshow - Databases: MySQL, MSSQL, Redis - Network file systems: GlusterFS - Virtualization: OpenVZ, Xen, VMware, Virtual PC - Version Control Systems: Subversion - Control panels: cPanel, WHM, Plesk - Monitoring systems: Nagios, Zabbix, Monit, Munin, Cacti - Cloud services: Amazon EC2 - Bug tracking systems: Mantis, Redmine, Trac, Jira - VPN: Mpd, OpenVPN, PPTP - Other software: Squid, Samba, Bind, Radius, Varnish, HAproxy, Wowza Media Server

    $33.33 /hr
    44 hours
    5.00
  10. Alex M.

    Alex M.

    ASP.NET/C#/MVC/AJAX Certified Developer, Team Lead

    Russia - Tests: 6

    + Strong Design and Development skills + .NET 1-4, C#, WinForms, ASP.NET, MVC 2-3, XML, XSLT, Web Services, ADO.NET, Remoting, Multi-threading + Active Server Pages (ASP) 2.0, Perl, PHP, DHTML, JavaScript, AJAX, Cascading Style Sheets (CSS) + Microsoft Internet Information Server (IIS), Apache+ Microsoft SQL Server, Postgre SQL, MySQL CERTIFICATIONS MCP - Developing and Implementing Web Applications with Microsoft Visual C# .NET MCP - Developing and Implementing Windows-based Applications with Microsoft Visual C# .NET

    Groups: Microsoft Certified Professionals

    $55.56 /hr
    3,799 hours
    5.00