Piotr S.
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Piotr S.

Programmer / Developer


Warsaw, Poland


I have been working in Ruby on Rails for more then four years. Actually I'm working toward PhD degree in Computer Science (polynomial interpolation) and Philosophy (logic). My publications: Kozera, R., Noakes, L., Szmielew, P.: Length Estimation for Exponential Parameterization and ε-Uniform Samplings. In: Huang F., Sugimoto A. (eds.) PSIVT 2013 Workshops. LNCS, vol. 8334, pp. 33–46. Springer-Verlag (2014) Kozera, R., Noakes, L., Szmielew, P.: Trajectory estimation for Exponential Parameterization and Different Samplings. In: Saeed, K., Chaki, R., Cortesi, A., Wierzchoń, S. (eds.) CISIM 2013. LNCS, vol. 8104, pp. 430–441. Springer-Verlag (2013) I'm also teacher at Coder's Lab where I teach Ruby and Rails and ... morein Warsaw University of Life Sciences, where I teach: - history of science - logic In past I've teached: - computer networks - security of computer networks - logic (at Warsaw University) I currently don't have much free time - so I'm actually available for only few hours per week (more like consultant then developer). Skills: Ruby on Rails 2/3/4 Ruby 1.8/1.9/2.0 (a lot of gems) Nginx / Apache + Passenger configuration Balsamiq mockups usage Mathematica Feel free to look at my github account: https://github.com/esse or my RoR website: http://roflcopter.pl less

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Work History and Feedback

  • Jun 2012 - Oct 2012

    UI/Front-End Developer (ERB, HTML/CSS, JS with good Rails and Rspec Capabilities)
    Piotr is a skillful developer who completed all the tasks assigned to him on time and his quality of work far exceeded expectations. We would defiantly hire Piotr again when the need arise again!
    101 hours
    $27.78 / hr
    $2,810.50 earned

  • May 2011 - Jun 2012

    Senior Interaction Designer -- Long-term Engagement!

    No feedback given

    164 hours

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Name Score (out of 5) Time to Complete
Ruby on Rails 2.3 Test 4.00 Top 20% 12 mins
Internet Security Test 3.60 Top 10% 10 mins
Windows XP Test 4.10 Top 10% 10 mins

Work History

278 hours worked
3 jobs


More than 30 hrs/week

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