Top Upwork Freelancers

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  1. Ivan Ioannis Stragalis

    Ivan Ioannis Stragalis

    Senior Java Developer

    Greece - Last active: 1 day ago

    Studied in Germany. Worked at Velti SA, Intrasoft International and other companies. Started my own company. Over 6 years intensive experience on Java, Database Design, PHP, Web Development, etc.

    $38.89 /hr
    2,820 hours
    5.00
  2. Martin Gaitan

    Martin Gaitan

    Senior Python Programmer

    Argentina - Last active: 15 days ago - Tests: 4

    I'm a senior Python developer with experience both in web and scientific scopes. I have a degree in Computer Enginnering from Cordoba national University, Argentina. https://mgaitan.github.io/en/about.html

    $35.00 /hr
    92 hours
    5.00
  3. Thanh Truong Ngoc

    Thanh Truong Ngoc

    voip, system, admin, django, bandwidth optimise

    Vietnam - Last active: 3 days ago - Portfolio: 16

    I have 6 years experience in system admin, deploy server, maintenance system base on: asterisk, voip, avaya, freeswitch, kamailio, opensip..... have developed some bandwidth optimise for VOIP system

    $13.00 /hr
    282 hours
    5.00
  4. Oz G.

    Oz G.

    Expert in Analytics

    Canada - Last active: 1 month ago - Tests: 7 - Portfolio: 3

    - More than 10 years of experience in turning data into valuable decisions. - Modeling, simulation and optimization expertise - Spreadsheet, mySQL and programming based analysis - Application development expertise in UNIX and Windows environments

    $39.99 /hr
    72 hours
    5.00
  5. Daniil Zorin

    Daniil Zorin

    Scientist and Programmer

    Russia - Last active: 1 day ago - Tests: 6 - Portfolio: 4

    I'm a professional scientist (PhD in Math) specialising in research on optimization, machine learning and statistics. I have proposed and implemented several optimization and machine learning algorithms for various practical problems. I also have experience as a programmer with C++, Python and C# since 2008.

    $33.33 /hr
    267 hours
    4.89