Jan Grodowski
Staff Software Engineer at Shopify
Salzburg, Salzburg, Austria
Summary
👤
Senior🎓
Top SchoolJan Grodowski is a Staff Software Engineer and founder with 11+ years building production-grade systems, currently shaping Shopify’s Database Platform from Salzburg. He blends hands-on engineering with product instincts—creating a widely adopted open-source Ruby test coverage tool (700+ stars, 16M+ downloads) and commercialising it via Undercover. At Rainforest QA he led architecture for AI-driven test automation, cutting inference costs by over 60% with a distributed prediction cache and launching LLM labelling and monitoring frameworks. He co-founded polyglot static analysis tooling (Codebeat) and helped present a code analysis product as a GitHub Partner at GitHub Universe. Known as a pragmatic generalist, Jan moves monoliths forward safely (Rails 4→7.1 gradual upgrade) while mentoring teams and shipping measurable developer productivity gains.
11 years of coding experience
11 years of employment as a software developer
Bachelor of Science (BS) Computer Science, Bachelor of Science (BS) Computer Science at Polish-Japanese Academy of Information TechnologyBachelor of Science (B.Sc.) Information Technology, Bachelor of Science (B.Sc.) Information Technology at University of Galway
English, German, Polish, Spanish
Stackoverflow
46reputation
2kreached
3answers
0questions
Github Skills (119)
mvc10
coverage10
simplecov10
ruby10
linter10
activerecord10
ruby-on-rails10
test-coverage10
github-app10
html10
swift10
crud10
cli10
git-diff10
mysql10
Programming languages (10)
Github contributions (5)
grodowski/go_farm
Nov 2015 - Jul 2018
golang, animals and the web
Contributions:2 PRs, 1 push, 1 branch in 2 years 7 months
golang
grodowski/undercover-ci
Oct 2018 - Nov 2022
UndercoverCI - GitHub App for actionable code coverage
Contributions:2 reviews, 396 commits, 200 PRs in 4 years 2 months
code-coveragecoveragerubytestingtest-coverage
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