Jarosław Michalik
Founder at Codility
Krakow, Lesser Poland Voivodeship
Summary
👤
Senior🎓
Top SchoolJarosław Michalik is a Kotlin-focused software engineer, trainer and serial founder with over a decade of experience building Android apps and developer education products from Kraków. As a Google Developer Expert in Kotlin he creates widely used learning resources—free and paid courses, recruitment question banks and a popular YouTube series—that help Android developers level up testing and unit-test practices. He combines hands-on engineering (multiple startups and Android roles) with content creation and task design for platforms like Codility, showing a rare blend of product, pedagogy and technical rigor. Trained in medical physics at AGH, he brings an analytical, measurement-oriented approach to developer tooling and curriculum design.
10 years of coding experience
6 years of employment as a software developer
Fizyka Medyczna, Fizyka Medyczna at AGH University of Krakow
Polish, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (49)
kotlin10
blogger10
kotlin-language10
ios10
react-native10
vavr10
newsletter10
akka10
java10
riddle10
kotlin-library10
android10
kotlin-extensions10
kotlin-android10
react10
Programming languages (4)
Github contributions (5)
rozkminiacz/KotlinUnitTesting
Oct 2018 - Oct 2019
Kotlin Unit Testing Examples
Contributions:23 commits, 3 PRs, 12 pushes in 1 year
testingkotlinunitunit-testing
rozkminiacz/GoogleMapsPolyline
Feb 2018 - Jun 2018
Contributions:2 releases, 10 commits, 10 pushes in 4 months
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