Tomasz Kasperek
Engineering Manager, JavaScript Foundations
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolTomasz Kasperek is an engineering manager and seasoned full-stack developer with 11 years of experience, now leading JavaScript Foundations at Netflix after rising from Senior Engineer to Staff Engineer and Manager at Fandom. He combines hands-on expertise in TypeScript, React, Node.js and ML-informed decision making to ship high-traffic, user-focused systems (previously supporting a platform with 300M monthly users). His teams have delivered measurable results—driving editor growth, pioneering LLM-based tooling that cut translation costs by 95%, and automating 90% of image reviews—while improving stability and monetization. A committed mentor, Tomasz shapes engineers from junior to leadership levels and emphasizes psychological safety and career growth. He also contributes to well-known open-source codebases such as the Wikia/app, blending backend enhancements with UX improvements.
11 years of coding experience
11 years of employment as a software developer
Magister inżynier (Mgr inż.) Informatyka, Magister inżynier (Mgr inż.) Informatyka at Poznan University of Technology
English, Polish
Stackoverflow
1,167reputation
145kreached
11answers
33questions
Github Skills (9)
php10
mediawiki10
css9
htaccess6
nodejs6
javascript6
scopes6
multer6
ecmascript6
Programming languages (9)
Github contributions (5)
Wikia/app
Jul 2020 - Nov 2020
Wikia Application Code
Role in this project:
Back-end Developer
Back-end DeveloperContributions:26 reviews, 51 commits, 8 PRs in 4 months
Contributions summary:Tomasz primarily contributed to the Wikia application's back-end functionality. Their work included implementing user preference features by modifying the `VariablesBase.php` file, and updating the design system with the `design-system/dist/css/styles.css` file, demonstrating a focus on both functional enhancements and front-end design elements. They also worked on a controller for article comment email notifications and refined email strings. These commits suggest a focus on improving the user experience and features related to article comments.
wikiphpwikiamediawiki
Mieloch/cqa-sem-eval
Aug 2017 - Feb 2018
Contributions:68 commits, 2 PRs, 44 pushes in 5 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.