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Piotr S.
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Piotr S.

Programmer / Developer

$55.56/hr

Warsaw, Poland


Piotr S. has added 6 portfolio pieces. Create an account to review them.

I have been working in Ruby on Rails for more ... morethen seven years. Actually I'm working toward PhD degree in Computer Science (polynomial interpolation) and BSc in Math. I've got MSc in Computer Science from Warsaw University of Life Sciences. I'm developer focused on writing quality backend code, covered with tests, one that you can rely on. In past I've taught Ruby on Rails on Coder's Lab bootcamp and other courses at Warsaw University of Life Sciences for example: computer networks, security of computer networks, multilayer applications, team project. Feel free to look at my github account: https://github.com/esse or my mini-blog: http://piotr.szmielew.pl or my linkedin profile: https://pl.linkedin.com/in/pszmielew or my google scholar profile: https://scholar.google.com/citations?hl=en&user=W2ltUvsAAAAJ Skills: Ruby on Rails 2/3/4 Ruby 1.8/1.9/2.0/2.1/2.2/2.3 / jRuby (a lot of gems) Nginx / Apache + Passenger configuration A little bit of admin stuff Golang Balsamiq mockups usage Mathematica My publications: Kozera, R., Szmielew, P.: Lagrange Piecewise-Quadratic Interpolation Based on Planar Unordered Reduced Data. In: Saeed, K., Homenda, W. (eds.) Computer Information Systems and Industrial Management. LNCS, vol. 9339, pp 423 – 434. Springer International Publishing (2015) Kozera, R., Noakes, L., Szmielew, P.: Convergence orders in length estimation for exponential parameterization and ε-uniform samplings. In: AIP Conference Proceedings, 1648, 660015 (2015) Kozera, R., Noakes, L., Szmielew, P.: Sharpness in trajectory estimation for planar four-points piecewise-quadratic interpolation. In: Gerdt, V., Koepf, W., Seiler, W., Vorozhtsov, E. (eds.) Computer Algebra In Scientific Computing. LNCS, vol. 8860, pp. 271 – 285. Springer-Verlag (2014) Kozera, R., Noakes, L., Szmielew, P.: Quartic Orders and Sharpness in Trajectory Estimation for Smooth Cumulative Chord Cubics. In: Chmielewski, L.J., Kozera, R., Shin, B.-S., Wojciechowski, K. (eds.) Computer Vision and Graphics. LNCS, vol. 8671, pp 9-16. Springer-Verlag (2014) 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) less

Overview

I have been working in Ruby on Rails for more then seven years. Actually I'm working toward PhD degree in Computer Science (polynomial interpolation) and BSc in Math. I've got MSc in Computer Science from Warsaw University of Life Sciences. I'm developer focused on writing quality backend code, covered with tests, one that you can rely on. In past I've taught Ruby on Rails on Coder's Lab bootcamp and other courses at Warsaw University of Life Sciences for example: computer networks, security of computer networks, multilayer applications, team project. Feel free to look at my github account: https://github.com/esse or my mini-blog: http://piotr.szmielew.pl or my linkedin profile: https://pl.linkedin.com/in/pszmielew or my google scholar ... moreprofile: https://scholar.google.com/citations?hl=en&user=W2ltUvsAAAAJ Skills: Ruby on Rails 2/3/4 Ruby 1.8/1.9/2.0/2.1/2.2/2.3 / jRuby (a lot of gems) Nginx / Apache + Passenger configuration A little bit of admin stuff Golang Balsamiq mockups usage Mathematica My publications: Kozera, R., Szmielew, P.: Lagrange Piecewise-Quadratic Interpolation Based on Planar Unordered Reduced Data. In: Saeed, K., Homenda, W. (eds.) Computer Information Systems and Industrial Management. LNCS, vol. 9339, pp 423 – 434. Springer International Publishing (2015) Kozera, R., Noakes, L., Szmielew, P.: Convergence orders in length estimation for exponential parameterization and ε-uniform samplings. In: AIP Conference Proceedings, 1648, 660015 (2015) Kozera, R., Noakes, L., Szmielew, P.: Sharpness in trajectory estimation for planar four-points piecewise-quadratic interpolation. In: Gerdt, V., Koepf, W., Seiler, W., Vorozhtsov, E. (eds.) Computer Algebra In Scientific Computing. LNCS, vol. 8860, pp. 271 – 285. Springer-Verlag (2014) Kozera, R., Noakes, L., Szmielew, P.: Quartic Orders and Sharpness in Trajectory Estimation for Smooth Cumulative Chord Cubics. In: Chmielewski, L.J., Kozera, R., Shin, B.-S., Wojciechowski, K. (eds.) Computer Vision and Graphics. LNCS, vol. 8671, pp 9-16. Springer-Verlag (2014) 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) less

Piotr S.
Drop Here

Piotr S.

$55.56 /hr

Programmer / Developer

Warsaw, Poland

Overview

I have been working in Ruby on Rails for more then seven years. Actually I'm working toward PhD degree in Computer Science (polynomial interpolation) and BSc in Math. I've got MSc in Computer Science from Warsaw University of Life Sciences. I'm developer focused on writing quality backend code, covered with tests, one that you can rely on. In past I've taught Ruby on Rails on Coder's Lab bootcamp and other courses at Warsaw University of Life Sciences for example: computer networks, security of computer ... morenetworks, multilayer applications, team project. Feel free to look at my github account: https://github.com/esse or my mini-blog: http://piotr.szmielew.pl or my linkedin profile: https://pl.linkedin.com/in/pszmielew or my google scholar profile: https://scholar.google.com/citations?hl=en&user=W2ltUvsAAAAJ Skills: Ruby on Rails 2/3/4 Ruby 1.8/1.9/2.0/2.1/2.2/2.3 / jRuby (a lot of gems) Nginx / Apache + Passenger configuration A little bit of admin stuff Golang Balsamiq mockups usage Mathematica My publications: Kozera, R., Szmielew, P.: Lagrange Piecewise-Quadratic Interpolation Based on Planar Unordered Reduced Data. In: Saeed, K., Homenda, W. (eds.) Computer Information Systems and Industrial Management. LNCS, vol. 9339, pp 423 – 434. Springer International Publishing (2015) Kozera, R., Noakes, L., Szmielew, P.: Convergence orders in length estimation for exponential parameterization and ε-uniform samplings. In: AIP Conference Proceedings, 1648, 660015 (2015) Kozera, R., Noakes, L., Szmielew, P.: Sharpness in trajectory estimation for planar four-points piecewise-quadratic interpolation. In: Gerdt, V., Koepf, W., Seiler, W., Vorozhtsov, E. (eds.) Computer Algebra In Scientific Computing. LNCS, vol. 8860, pp. 271 – 285. Springer-Verlag (2014) Kozera, R., Noakes, L., Szmielew, P.: Quartic Orders and Sharpness in Trajectory Estimation for Smooth Cumulative Chord Cubics. In: Chmielewski, L.J., Kozera, R., Shin, B.-S., Wojciechowski, K. (eds.) Computer Vision and Graphics. LNCS, vol. 8671, pp 9-16. Springer-Verlag (2014) 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) less

Piotr S. has added 6 portfolio pieces. Create an account to review them.

Work History and Feedback

  • UI/Front-End Developer (ERB, HTML/CSS, JS with good Rails and Rspec Capabilities)

    Jun 2012 - Oct 2012
    5.00
    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

  • Senior Interaction Designer -- Long-term Engagement!

    May 2011 - Jun 2012
    No feedback given

    164 hours

Piotr S. has more jobs to show. Create an account to review them.

Tests

NameScore (out of 5)Time to Complete
Ruby on Rails 2.3 Test4.00Top 20%12 mins
Internet Security Test3.60Top 10%10 mins
Windows XP Test4.10Top 10%10 mins
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Work History
278 hours worked
3 jobs
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Less than 30 hrs/week
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