Szymon Ciołkowski
Ruby Developer at iRonin.IT – Software House
Łódź Voivodeship, Poland
Summary
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SeniorSzymon Ciołkowski is a seasoned Ruby developer with nine years of experience building and maintaining backend systems, currently working on a US fintech "lease to own" platform using Rails, Postgres, AWS and Kafka. He routinely ships end-to-end features, performs refactoring and bug fixes for a central contracts system at Acima Leasing, while also stepping into frontend tasks when needed. Previously he led teams delivering large event-driven web experiences (Zoomtopia) and built HIPAA-conscious backends for US health-tech clients, demonstrating strong communication and compliance awareness. Comfortable across Rails, PHP and Elixir stacks, he brings pragmatic full‑stack instincts grounded in production reliability and long-term maintainability.
9 years of coding experience
8 years of employment as a software developer
Polish, English
Stackoverflow
1reputation
328reached
0answers
1question
Github Skills (4)
cassandra6
query-optimization6
data-modeling6
elixir1
Programming languages (1)
Github contributions (5)
htdevelopers/rails-htd-academy-backend
Nov 2019 - Apr 2022
Contributions:2 PRs, 5 pushes, 1 branch in 2 years 5 months
sciolkowski/rethink_ws
Dec 2016 - Aug 2017
Contributions:4 PRs, 3 pushes, 4 branches in 9 months
demo-appwebsocketsfollowingrailsrethinkdb
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