Jacek Smolak
Senior Frontend Engineer at OLX
Greater Poland Voivodeship
Summary
👤
Senior🎓
Top SchoolJacek Smolak is a Senior Frontend Engineer with over 12 years of professional experience and more than a decade writing, refactoring, and removing TypeScript/JavaScript code, practicing TDD and product-focused development. He has advanced through roles from lead web developer to staff and lead engineering positions at companies like HolidayCheck, Fandom, Klarna, and OLX, balancing time-to-market with long-term code quality. Known for keeping things simple and organized, he mentors teams, fights for users, and drives pragmatic technical decisions that favor sustainable product outcomes. Based in Greater Poland, he brings a rare combination of hands-on implementation, architectural thinking, and a willingness to continuously learn and unlearn.
12 years of coding experience
18 years of employment as a software developer
Master of Science Computer Science, Master of Science Computer Science at Poznan University of Economics And Business
English, German
Github Skills (182)
postgresql10
feather-icons10
http-client10
dns10
sql-query10
javascript10
linux10
browser10
orm-library10
database10
ajax10
sqlite10
cockroachdb10
mysql10
mariadb10
Programming languages (7)
Github contributions (5)
smolak/schemas-project
Apr 2020 - Sep 2020
A project based on schema.org schemas
Contributions:9 PRs, 113 pushes, 8 branches in 5 months
schemasschema-org
smolak/urls-project-vercel
Nov 2022 - Aug 2023
Contributions:49 PRs, 231 pushes, 52 branches in 8 months
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