Marcin Gryszko
Staff Engineer at air up®
Madrid, Community of Madrid, Spain
Summary
👤
Senior🎓
Top SchoolMarcin Gryszko is a Staff Engineer based in Madrid with 14 years of hands-on experience building high-performance, production-oriented systems across telco, travel, logistics and fintech. He specializes in Java/Kotlin and JavaScript, champions test-driven development and automated QA, and consistently delivers simple, well-crafted solutions with fast time-to-market. Marcin has a track record of improving reliability and performance at scale—helping lastminute.com reach all-time sales highs—and driving CI/CD and microservice adoption in multi-country bank and startup environments. He combines deep technical delivery with mentorship and architectural leadership, helping teams make pragmatic choices while honing engineering skills. Outside work he tinkers with code relentlessly, bringing that same curiosity to learning new business domains and translating complex customer problems into elegant software products.
14 years of coding experience
22 years of employment as a software developer
M. S. Computer and Information Technology, M. S. Computer and Information Technology at Poznan University of TechnologyM. S. Electronics and Telecommunications, M. S. Electronics and Telecommunications at Gdańsk University of Technology
English, German, Spanish, Polish
Github Skills (153)
testdouble10
ruby10
linux10
sdk10
tooltips10
textmate10
macos10
package-manager10
homebrew10
kotlin-dsl10
polymorphism9
sinon9
javascript9
responsibility9
codenarc9
Programming languages (14)
Github contributions (5)
mgryszko/trello-stats
Feb 2017 - Apr 2020
Contributions:33 pushes, 4 branches in 3 years 2 months
mgryszko/strava-access-token
Oct 2018 - May 2021
Generate Strava API OAuth2 access token for testing
Contributions:1 review, 2 PRs, 13 pushes in 2 years 7 months
apiaccess-tokentestingstravatoken
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