Paweł Mikołajewski
Team Lead at Mobo Kids
Warsaw, Masovian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolPaweł Mikołajewski is a seasoned software leader and Team Lead based in Warsaw with 16 years of experience building and shipping production-grade Ruby on Rails applications. He combines hands-on backend engineering—demonstrated by contributions to well-known open-source projects like simple_form and the Dalli memcached client—with strategic leadership as co-founder and CEO of Mobo Kids. Paweł has a track record of improving real-world libraries (adding UNIX socket support, configurable error handling and tests), showing attention to cross-platform compatibility and developer ergonomics. At YND he leads teams while staying deeply technical, mentoring engineers and driving architecture decisions. His career spans startups and consultancy, giving him both product-focused pragmatism and client-facing discipline. Detail-oriented and pragmatic, he often surfaces improvements that make systems easier to integrate and operate in diverse environments.
15 years of coding experience
8 years of employment as a software developer
Warsaw University of Technology
Stackoverflow
5,463reputation
599kreached
87answers
36questions
algorithm
top-5%
Github Skills (17)
form-builder10
ruby-rails10
testing10
rails10
ruby10
socket10
memcached10
dsl9
algorithm9
computational-geometry6
api6
css6
jquery6
6
if-statement6
Programming languages (8)
Github contributions (5)
petergoldstein/dalli
Sep 2011 - Dec 2016
High performance memcached client for Ruby
Role in this project:
Back-end Developer
Back-end DeveloperContributions:23 commits, 1 PR, 1 push in 5 years 3 months
Contributions summary:Paweł primarily contributed to enhancing the Dalli memcached client for Ruby, focusing on adding and refining UNIX socket support. They implemented new functionality for UNIX socket connections, updated the codebase to handle socket paths correctly, and addressed platform-specific (Windows) compatibility issues. The user's commits also included tests for the new features and extended the client's capabilities with a `reset_stats` command.
memcached-clientrubyperformancememcachedjruby
heartcombo/simple_form
Mar 2013 - May 2013
Forms made easy for Rails! It's tied to a simple DSL, with no opinion on markup.
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 commits in 1 month
Contributions summary:Paweł focused on modifying the `simple_form` library to allow for a configurable field error proc. The changes involved modifying the `FormHelper` and the main `simple_form.rb` files to enable the customization and include tests. The commits also included modifications to the initializer to reflect these changes. This indicates an understanding of the library's internal structure and customization options.
ruby-on-railsform-builderrails-helperopinionrails
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