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@shoes @mendicant-original @hacketyhack @codecurious-bln @rubyberlin @Webanwendungskurs-HU @rubycorns @elixir-bench @bencheeorg
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Hi πŸ‘‹, I'm Tobi

An Open Source Enthusiast with a passion for building meaningful products & working with people

  • πŸ’Ό I'm currently looking for a job, employment or freelance - I'm a Staff+ engineer but also have management experience

  • πŸ’š I'm passionate about a whole lot of things...

    • Community, so runnign the Ruby User Group Berlin for 11 years (and counting) as well as conferences etc.
    • Creating Open Source projects useful to people (such as benchee)
    • Programming Languages, in particular Elixir & the BEAM these days
    • topics surrounding communication, collaboration, motivation & process improvements
    • mentoring and spreading the knowledge of the topics I'm passionate about through any means possible
  • πŸ”­ I’m currently working on benchee, but I work(ed) on a multitude of projects including simplecov and shoes

  • πŸ“ I regularly write articles on

  • πŸ”ˆ You can check out a selection of talks I've given

  • πŸ’¬ Ask me about Elixir, Ruby, Staff Engineering, Benchmarking, Architecture, Testing, Communication, Motivation, Product Decisions & more

  • πŸ“« How to reach me

  • πŸ“„ Know about my experiences

  • ⚑ Fun fact You can meet me (& Ghost) in the game Thea 2: The Shattering - we might even join your party. Also, my favorite color is green πŸ’š

Connect with me:

pragtob tobiaspfeiffer

Languages and Tools:

elixir git html5 javascript jekyll linux postgresql rails react redis ruby


  1. bencheeorg/benchee bencheeorg/benchee Public

    Easy and extensible benchmarking in Elixir providing you with lots of statistics!

    Elixir 1.4k 64

  2. simplecov-ruby/simplecov simplecov-ruby/simplecov Public

    Code coverage for Ruby with a powerful configuration library and automatic merging of coverage across test suites

    Ruby 4.7k 552

  3. shoes/shoes4 shoes/shoes4 Public

    Shoes 4 : the next version of Shoes

    Ruby 1.6k 192

  4. after_do after_do Public

    after_do allows you to add simple callbacks to methods

    Ruby 113 7

  5. rails-beginner-cheatsheet rails-beginner-cheatsheet Public

    A cheat sheet for rails beginners, taking care of a lot of basic stuff and information. Aimed at helping beginners too look up stuff. Originally created for my RailsGirls project group.

    HTML 198 71

  6. deep_merge deep_merge Public

    Deep (recursive) merge for maps, keywords and others in Elixir

    Elixir 106 4