Top Upwork Freelancers

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  1. Cristian Santiago

    Cristian Santiago

    Infrastructure Administrator(esp. Windows) and Expert Problem Solver

    United States - Tests: 3

    I have been working on IT for almost 15 years now. I am a generalist, a problem solver. I have more experience on Windows Infrastructure but I do also get along pretty well with Unix environments. I have worked for Microsoft Enterprise Support, then continued working as infrastructure administrator for other companies. I have experience in different kinds of Technology and even if I don't have, I can pick it up really quick, my mind seems to be wired up that way.

    $22.22 /hr
    0 hours
    0.00
  2. Vladimir E.

    Vladimir E.

    Lotus Notes/Domino Web developer

    Russia

    I have experience designing solutions based Lotus Notes/Domino platform, geographically distributed systems, RDBMS store data systems (DB2). My core competency lies in Web based development (XPages, DHTML), but I have a rich-client development experience also. Also I good in: Lotus Notes/Domino system administration, deployment, SQL-query optimization, project management. I use languages and technologies: Lotus Script, @formula, Java, Java Script, SQL, XPages, Ajax. I can work about 20 hours in a week.

    $17.00 /hr
    0 hours
    0.00
  3. Max Topal

    Max Topal

    VoIP/Network/Linux Engineer

    Russia - Tests: 3

    Over 8 years hands-on experience. I have deep knowledge on VoIP Hardware and softswitches from open-source one (Asterisk, Elastix, Askozia, Freepbx, CallBox, Trixbox, Welltime, Yeastar) to licensed (Switchvox, Panasonic, Mera, RTU) . I am providing Asterisk-based PBX installation\integration, support, troubleshooting and consultations. Fully manage the installation, configuration and troubleshooting of Linux servers * Install and configure Web Servers and MySQL, PostgreSQL * Install and configure customer scripts and programs * Monitor performance to identify and resolve issues using a suite of systems and tools. * Provide VoIP Security * Troubleshoot and resolve network, system, hardware and software problems. * Achieve quick fixes and / or long-term solutions as needed. I have more than 100 successful IP-PBX server deployments, so I am confident that you will be satisfied with my work completely.

    $20.00 /hr
    0 hours
    0.00
  4. Federico de los Santos

    Federico de los Santos

    Microsoft System Center Consultant, MCSE Certified

    Uruguay - Tests: 3 - Portfolio: 3

    Experienced consultant in Microsoft technologies including System Center, SharePoint, Exchange, Lync, and Active Directory. Primary projects focused in banking, financial, insurance and health industries. Worked on-site and remote to companies located in Argentina, Chile, Uruguay, Colombia, Dominican Republic, Puerto Rico and USA. Also I am an experienced developer which helps me to create integration tools between different technologies, and scripting to automate tasks. I have worked on companies evaluated as CMMI and I hold ITIL Certification. I am certified as MCSE since 1999 and hold certificate for more that 20 MOC exams. Also I have training experience to technical and end-user staff.

    $33.33 /hr
    0 hours
    0.00
  5. Dmitrii Korotovskii

    Dmitrii Korotovskii

    Senior Software Engineer

    Russia - Tests: 3 - Portfolio: 2

    I have over 6 year's experience in PHP/Web development. I use PHPStorm as my primary IDE. Source-code is always stored in Git. Git is my favorite distributed revision control system. I also prefer do rebase on my branches and cherry-pick in emergency situations. For debugging PHP applications I use Xdebug and strace in very complicated cases. I'm an advanced Linux user, I usually write small bash scripts to make my life easier. I can setup working environment from scratch on server, but it's better to do it via provisioning system like Ansible.

    $40.00 /hr
    0 hours
    0.00
  6. Jawad Rashid

    Jawad Rashid

    Linux system Administrator / Network Administrator

    United Kingdom - Tests: 2

    I have strong expertise in Linux OS. Have more then 10 years of experience in installation and management of DNS, email, Proxy, Database, DHCP, FTP, HTTP, VLAN, VPN and IP PBX servers. I have worked in ISPs and telecom environment . and have very good concept of IP telephony systems and SIP/IAX/H323 Protocols. IP and SS7 interconnects and technologies. Have completed many projects including College Network design and implementation, fixed line telecom project using ZTE soft-switch. have very good knowledge of securing the networks and servers/workstations and specially telecom systems.

    $22.22 /hr
    0 hours
    0.00
  7. Mikhail Chugunov

    Mikhail Chugunov

    Java Developer

    Russia - Tests: 1

    6 years of web-oriented Java software development. Expert in Spring framework related development. Last 5 years I took part in several enterprise-quality projects in various fields from property insurance to telcos. My objective is to deliver the highest quality for backend applications. Also I have some experience in front-end technologies including Javascript as well as with modern languages and frameworks like Play for Scala

    $11.11 /hr
    0 hours
    0.00
  8. Natalya P.

    Natalya P.

    Java developer

    Russia - Tests: 2

    I am a professional java developer for 10 years and team leader for 4 years. My main projects were for companies of financial sector. The most of them were for top of Russian banks. I am good at understanding the live-cycle of develop. I pay particular attention to the timing of the project. I am responsible come to each project. I am good at reading java code. I have experience in the following technologies: Languages: Java, SQL, PLSQL, Java Script, HTML Technology: Swing, Wicket, ExtJs, Servlets, JSP, JSF, XML, Struts, JDBC, EJB, Hibernate, Spring, JUnit, Maven, Ant Databases: Oracle, MS SQL Application Server: IBM WebSphere, WAS Communiti Edition, Tomcat. Means of team development: Mercurial, SVN, CVS

    $20.00 /hr
    0 hours
    0.00
  9. Igor T.

    Igor T. Agency Contractor

    FULL STACK EXPERT. 5+ years exp. Live projects

    Russia - Tests: 1 - Portfolio: 2

    I'm a professional web developer with a strong mathematical education. I took 24th place at All-Russian Mathematical Olympiad in 2008. My main principals are: ✓ to keep your deadlines (to be working as much as need if need) ✓ to keep code clear ✓ to keep application stable I was working with enough clients. One of them was a Russian bank(I have developed a security inner system for them). Also I was working with market force international group. I know how to have a professional approach to what I'm doing. And my live projects are evidence that I'm pro and my clients are satisfied. So I'm looking forward new interesting suggestions.

    Associated with: ILike

    $30.00 /hr
    1,560 hours
    0.00
  10. Ivan Ivanov

    Ivan Ivanov

    .NET/C#, ASP.NET, XML Schema, XBRL, SQL, Adobe Flex, Python

    Bulgaria - Tests: 6 - Portfolio: 2

    Over 15 years professional in desktop and web application development as senior developer and system architect. Professional in C#, ASP.NET, XML Schema, XBRL, XPath, XSLT, MS SQL, MySQL, Silverlight. Expert in Python, Adobe Flex (Cairngorm), PHP, JavaScript, Delphi. Interested and some experience in Java, Google API, AppEngine and Windows Phone applications.

    $30.00 /hr
    0 hours
    0.00