Tomasz Kostowski
Frontend Developer at FOSS
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolTomasz Kostowski is a Frontend Developer with 8 years of hands-on experience building Angular-driven user interfaces and .NET-backed web applications. A Computer Science graduate from Warsaw University of Technology, he has delivered full-stack solutions across telecom, insurance, and finance domains for companies like Citi, SUNTECH, and Aon via Inspeerity. Comfortable across the stack, Tomasz pairs Angular (versions 8–13) and modern TypeScript frontends with C#, .NET Web API/Dapper backends and SQL Server, and has experience with testing (Jest, Cypress, MSTest), CI/CD and Azure tooling. Now at FOSS, he focuses on frontend craftsmanship while bringing pragmatic backend insight from prior full-stack roles, making him effective at translating complex business rules into maintainable UI. Colleagues value his steady delivery in outsourced and client-facing projects and his ability to bridge domain complexity with clean, testable code.
8 years of coding experience
3 years of employment as a software developer
Warsaw University of Technology
Github Skills (5)
chrome-extension4
chrome3
opc1
agent1
remote-execution1
Programming languages (4)
Github contributions (5)
tomek1kk/Supreme-Bot
Apr 2019 - Dec 2020
Chrome extension automating shopping on supremenewyork.com website :tshirt: :athletic_shoe:
Contributions:26 commits, 6 pushes, 1 branch in 1 year 8 months
shoppingshoechromesupremenewyorktshirt
tomek1kk/supreme_bot_html_postgis
Dec 2019 - Mar 2020
Contributions:28 commits, 4 PRs, 19 pushes in 2 months
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