Software Engineer

I'm Lucas, helping companies worldwide.

Detail-oriented engineer with a diverse background - from start-ups to medium-sized organizations. I thrive on new challenges, whether it involves tackling a fresh project, leading teams, or assuming a different role. Also a co-organizer of Kraków Ruby Users Group.

Say Hello GitHub

Featured Projects

Compartment

Go · macOS, Linux, Windows (WSL2)

Your assistant for spinning up local services for development without port conflicts. Start multiple PostgreSQL versions, Redis instances, and more - all running simultaneously with DNS resolution.

Docker PostgreSQL DNS CLI

Blog

All posts →

Feb 02, 2026 Ruby

Introduction to fibers

Learn how Ruby Fibers enable efficient concurrent I/O without the overhead of threads or complexity of mutexes.

Mar 31, 2025 Elixir

Understanding the Pin Operator and Macros in Elixir

Understanding the Pin Operator and Macros in Elixir by building custom DSL

Jan 28, 2025 Rails

Releasing database connections after each web request in Ruby on Rails

Learn how Ruby on Rails releases database connections back to the pool after each web request.