Michał Łomnicki
Head Of Architecture at T5C Technology
Wrocław, Lower Silesian Voivodeship, Poland
Summary
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Rockstar🎓
Top SchoolMichał Łomnicki is a seasoned software engineer with 17 years’ experience building web and mobile applications and administering Linux environments from Wrocław, Poland. He specializes in Ruby and Ruby on Rails, contributing significant backend refactors to the RailsEventStore project to improve event handling, subscriptions and backward compatibility. As Lead Backend Engineer at Checkd Group and long-time consultant, he blends hands-on coding with architectural thinking to deliver data-driven, scalable systems for consumer-facing products. His background ranges from .NET and Ada early in his career to modern full-stack work with React and Rails, giving him practical cross-stack fluency. Colleagues rely on him for pragmatic solutions that balance flexibility and reliability in event-driven systems. He often surfaces subtle compatibility improvements that keep libraries robust in real-world deployments.
17 years of coding experience
18 years of employment as a software developer
Wrocław University of Science and Technology
Github Skills (9)
ruby10
event-driven-architecture10
refactoring10
cqrs10
event-sourcing10
testing9
rails9
ruby-rails9
domain-driven-design8
Programming languages (5)
Github contributions (5)
RailsEventStore/rails_event_store
Mar 2016 - Sep 2017
A Ruby implementation of an Event Store based on Active Record
Role in this project:
Back-end Developer
Back-end DeveloperContributions:32 commits, 14 PRs, 3 pushes in 1 year 6 months
Contributions summary:Michał primarily focused on refactoring and enhancing the core functionality of the Ruby Event Store library. They implemented changes to improve event handling, subscription mechanisms, and overall code structure. The commits demonstrate a good understanding of event-driven architecture, specifically regarding subscriptions and event types. They addressed backward compatibility concerns and worked on improving the core behavior and flexibility of the event store.
activerecordeventstorerubyevent-sourcingrails
mlomnicki/ddd-ecommerce
Feb 2016 - Feb 2016
Contributions:55 commits, 22 pushes, 3 branches in 10 days
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