Top Upwork Freelancers

Clear all filters
  1. Walker Leite

    Walker Leite

    Linux System Administrator

    Brazil - Last active: 08/21/2014 - Tests: 2

    Student of Computer Science, working with GNU/Linux since 2007. Expert in Debian/CentOS-Redhat web/database server installation and administration. Knowledge in PHP, HTML, CSS, javascript, Bash scripts, Perl, Mysql. Today, manages Cloud Amazon AWS EC2, RDS, Loadbalancer and Autoscaling services for Praiseweb (hosting provider), and their clients.

    $15.00 /hr
    13 hours
    4.80
  2. Mariano Schmidt

    Mariano Schmidt

    Software Developer - Student

    Argentina - Last active: 6 months ago - Tests: 1

    I am pursuing a bachelor degree in Computer Science, I expect to finish it in 2016 During my bachelor degree, I developed many projects on C and Python (using Django).

    $11.11 /hr
    41 hours
    5.00
  3. Wayne Fair

    Wayne Fair

    Seasoned ASP.NET Developer Available Immediately

    United States - Last active: 05/30/2014 - Tests: 1

    Programming for nearly 20 years - I've seen many projects through to completion. Customer satisfaction is critical to me. I am easy to work with - and very knowledgeable in my field. My passion is data-driven web development using ASP.NET: web forms and the MVC 4 framework.

    $20.00 /hr
    328 hours
    5.00
  4. Sergey C.

    Sergey C.

    Microsoft Certified C#/.NET Senior Developer

    Moldova - Last active: 12/12/2011 - Tests: 4

    I am a senior .NET developer and a certified Scrum Master, with more than 7 years experience of developing complex desktop, web and business intelligence database applications. My objective is to work on complex and challenging projects, which requires strong skills and knowledge.

    $16.67 /hr
    703 hours
    4.88
  5. Hans W.

    Hans W.

    Senior System Engineer

    United States - Last active: 5 months ago - Tests: 2

    Accomplished System Administrator with 16 years of experience in research and instructional computing support. Comprehensive experience with Linux, Windows and Solaris. Specialties * Enterprise System Administration * Storage Management * Network Engineering * Datacenter Operations

    $44.44 /hr
    679 hours
    5.00
  6. Yuri H.

    Yuri H.

    Programmer / Developer

    Bolivia - Last active: 11/28/2012 - Tests: 7 - Portfolio: 7

    With over eight years of experience in many kinds of applications and automation tools. Strong knowledge of Microsoft .Net and latest web technologies. My goal is to serve persons with the computers and a complete client satisfaction with the result of the work.

    $17.00 /hr
    154 hours
    5.00
  7. Clint C.

    Internet Security - SonicWALL Adtran Cisco

    United States - Last active: 19 days ago - Tests: 2

    I am a self-driven, highly-analytical SYSTEM/NETWORK/SECURITY ADMINISTRATOR with 18 years of progressive experience helping companies improve organizational security and effectiveness. Adept at the design, architecture, development and maintenance of high-performing secure networks. My skills in the area of systems/network security and administration are complemented by my certifications as a Certified SonicWALL Security Professional, Microsoft Certified Systems Engineer, Cisco Express Foundation Sales Specialist and Apple Certified Systems Administrator. I am proficient in Windows XP/Vista/7, Windows Server NT/2003/2008, Exchange 5.5/2003/2007, Apple OS X Server/OS X workstation, Dell/HP/IBM and Apple servers, Cisco routers/switches and firewalls, Adtran routers and switches, SonicWALL firewalls/email security appliances and SonicPoints, Barracuda appliances, DHCP, DNS, VPN, SSL-VPN, LDAP, Active Directory, SMTP, OWA, HTTP, HTTPS, IIS.

    $80.00 /hr
    10 hours
    5.00