Paweł Pacana
Lower Silesian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolPaweł Pacana is a Staff Engineer with 15+ years building and modernizing high‑traffic Rails platforms, specializing in domain-driven design, event sourcing, and pragmatic migrations of legacy monoliths. He leads and maintains the RailsEventStore open‑source project, trains engineers through Arkency’s masterclasses, and regularly speaks at Ruby meetups, combining deep Rails expertise with thoughtful architecture. His work spans backend optimizations, CI and Docker improvements, and frontend apps in Elm, and he’s solved subtle production issues like cache leaks and memory OOMs that eluded others. Comfortable working directly with CTOs and cross-functional teams, he’s delivered zero‑downtime migrations and reliable verification systems that enabled safe product iterations. Based in Lower Silesia, Poland, Paweł pairs hands‑on engineering with mentorship and a knack for turning legacy constraints into scalable, observable systems.
15 years of coding experience
3 years of employment as a software developer
MSc Computer Science, MSc Computer Science at Wrocław University of Science and Technology
Stackoverflow
281reputation
3kreached
6answers
0questions
Github Skills (191)
testing10
rspec10
mvc10
coverage10
ruby10
activerecord10
mutant10
ruby-on-rails10
test-coverage10
static-analysis10
webmachine10
responsibility10
cqrs10
linux10
validation10
Programming languages (9)
Github contributions (5)
arkency/nanoc-tailwind-starter
Mar 2020 - Feb 2021
Contributions:32 commits, 6 PRs, 31 pushes in 11 months
nanocparceljstailwindcss
drugpl/wroclove.rb
Dec 2011 - Mar 2018
Ruby Conference brought by thriving Wrocław Ruby Community
Contributions:179 commits, 7 PRs, 110 pushes in 6 years 4 months
ruby-on-railsrailsruby
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