Gregory Witek

Gregory Witek

Amsterdam, Noord-Holland, Nederland
2K volgers Meer dan 500 connecties

Info

I am an ambitious and experienced engineering manager with 15 years of experience in the…

Artikelen van Gregory

Activiteit

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Ervaring

  • Booking.com grafisch

    Booking.com

    Amsterdam, North Holland, Netherlands

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    Amsterdam, North Holland, Netherlands

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    Amsterdam, North Holland, Netherlands

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    Amsterdam, North Holland, Netherlands

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    Amsterdam, North Holland, Netherlands

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    Amsterdam Area, Netherlands

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    Singapore

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    Singapore

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    Singapore

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    Europe, Asia, Oceania

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    Berlin Area, Germany

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    Valencia, Spain

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    Poznan, Greater Poland District, Poland

Opleiding

  • Politechnika Poznańska grafisch

    Politechnika Poznańska

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    Master Thesis title: "Software design patterns in context of dynamic programming languages"

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    Topic of bachelor thesis: "Simulator of DNA computers".
    As a part of the thesis 3 simulators were written. Each of them simulated different model of DNA computer.

Licenties en certificaten

Ervaring als vrijwilliger

  • The Mentoring Club grafisch

    Mentor

    The Mentoring Club

    - heden 3 jaar 4 maanden

    Opleiding

    As part of Mentoring Club I conduct weekly, free mentoring sessions for software developers and engineering managers who want to improve their skills and boost their careers.

  • Plato  grafisch

    Mentor

    Plato

    - 2 jaar 1 maand

    Opleiding

    I conducted more than 60 mentoring sessions with a number of mentees from America and Europe.

    I supported mentees at different stages of their career, from mid-level to principal developers. I helped them build better relations with their managers, create more impact in the company, foster a positive and proactive team culture, etc.

    I can proudly say that 2 of my mentees got promoted while I mentored them (thanks to their own hard work, though!)

  • TechLadies grafisch

    Coach

    TechLadies

    - 5 maanden

    Opleiding

    As part of TechLadies bootcamp I coached a team of 3 ladies who wanted to become professional software developers.

    During the bootcamp my team collaborated with a locan NGO in Singapore and built an application to help the NGO to keep track of their students attendance and progress. The application was eventually released to production and used by the NGO.

    Following the bootcamp, 2 of my team members found jobs in tech industry and became professional developers.

  • Polish Scouting Association (ZHP, Boy Scouts) grafisch

    Scout Leader

    Polish Scouting Association (ZHP, Boy Scouts)

    - 10 jaar 3 maanden

    Kinderen

    During my volunteer work for ZHP I used to participate in various activities

    * In 2004 I started a boy scout group (77 DH), I led it for 3 years and in 2007 I passed it to my successor. As of 2015, the group still exists and is led by its 5th leader now.
    * In 2006-2007 I was a member of revision Committee in Orneta district
    * In 2007-2013 I was a member of Poznan Scout Academic Group
    * In 2009-2013 I was a member of central ZHP structure - New Technologies Department

Publicaties

  • Patterns, Patterns Everywhere

    ArrrrCamp 2014

    Based on my master thesis, written in 2012, I prepared a presentation describing how object-oriented software design patterns changed during 20 years of their existence and how they are used in dynamic languages, like Ruby.

    Publicatie weergeven
  • ... but we had to kill Unicorns

    european Ruby conference (EuRuKo 2013) in Athens

    The presentation is a case study, where Sponsorpay developers team switched from the unicorn web server to a multi-threaded server application to serve Ruby on Rails application using MRI 1.9.3.

    Andere auteurs
    Publicatie weergeven

Projecten

  • Fuzzie

    - heden

    I've been helping the team behind Fuzzie with:
    * designing and developing architecture of the backend application
    * hiring software developers
    * reviewing ongoing changes in the code
    * handing over codebase from outsourcing agency to in-house team

    Project weergeven
  • Sorcery

    - heden

    Sorcery is an open-source authentication library for Ruby on Rails, with over 2000 stars on Github. The project has started in 2011. I've been maintaining and developing the library since February 2014.

    Project weergeven
  • TimeTravellr

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    My work for TimeTravellr included:
    * code audit
    * fixing bugs in the front-end application (AngularJS)
    * fixing bugs and developing new features in API and Admin application (Ruby on Rails)

    Project weergeven
  • Mixlips

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    I've been involved in Mixlips project for more than 6 months. My work included:
    * rewriting legacy backend application
    * rewriting frontend to single page application (using Backbone.js library)
    * hiring freelance developers
    * writing requirements

    Project weergeven
  • peerTransfer — International tuition payment solutions

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    International education payments made easy

    Andere bijdragers
    Project weergeven

Talen

  • English

    Volledige professionele vaardigheid

  • Spanish

    Beperkte werkvaardigheid

  • Polish

    Moedertaal of tweetalig

  • Dutch

    Basisvaardigheid

  • German

    Basisvaardigheid

  • French

    Basisvaardigheid

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