Daniil Sydorenko
Senior Software Engineer at Klarna
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolDaniil Sydorenko is a Senior Frontend Software Engineer based in Warsaw with 11 years of professional experience and over 8 years focused on responsive, component-driven front-end development. He has built and maintained UI layers for large-scale, microservice-based platforms—most recently at apreel—and previously contributed to one of Europe’s leading job portals at StepStone, where he coordinated across dozens of teams. Proficient in React, TypeScript, Angular, Redux/NGRX and modern build tooling, Daniil emphasizes well-tested, reusable components and SSR integrations with async REST backends. His background spans full-stack PHP projects to modern SPA architectures, giving him a practical appreciation for backend constraints and deployment pipelines. Comfortable working in distributed, cross-border teams, he pairs systematic engineering practices with a pragmatic focus on UX and performance. Outside the obvious, he brings hands-on experience migrating legacy JS stacks toward typed, componentized front ends—reducing maintenance burden while accelerating feature delivery.
11 years of coding experience
7 years of employment as a software developer
Bachelor's degree, Automation and Computer Integrated Technologies, Bachelor's degree, Automation and Computer Integrated Technologies at Kharkiv National University of Radio ElectronicsMaster's degree, Journalism and Social Communication, Master's degree, Journalism and Social Communication at Wyższa Szkoła Informatyki i Zarządzania w Rzeszowie
Polish, English, Ukrainian, Russian
Stackoverflow
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0reached
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Github Skills (9)
haversine10
geolocation10
nodejs9
javascript8
gulp6
css-grid3
webpack3
grid2
grid-system2
Programming languages (3)
Github contributions (5)
DaniilSydorenko/flex-mix
Apr 2016 - Nov 2017
Contributions:32 commits, 39 pushes, 2 branches in 1 year 7 months
DaniilSydorenko/haversine-geolocation
Jun 2017 - Jun 2022
Get distances between two points or get closest position to current point. Based on the Haversine Formula
Contributions:3 releases, 60 commits, 19 PRs in 5 years 1 month
haversinedistancees6geolocationhaversine-formula
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