Rafał Kornel
Senior Software Engineer at PwC Polska
Warsaw, Masovian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolRafał Kornel is a Senior Software Engineer based in Warsaw with eight years of full-stack experience, currently building cloud-integrated data pipelines and service integrations at PwC Polska. Self-taught initially and now studying computer science at Warsaw University of Technology, he combines strong frontend craft—maintaining legacy UIs, leading junior teams and CI/CD—with backend expertise in NestJS, Azure services and performance optimization. He has a track record of turning manual Excel imports into real-time event-driven integrations, introducing extensive test suites and cutting latency by an order of magnitude. An active open-source contributor, he improves reliability in reactive UI libraries through testing and refactoring, and brings unusual breadth from astronomy studies to game-development and AI curiosity.
8 years of coding experience
4 years of employment as a software developer
Engineer's degree, Computer Science, Engineer's degree, Computer Science at Warsaw University of TechnologyLicencjat (Lic.), Astronomy, Licencjat (Lic.), Astronomy at Uniwersytet Warszawski
Github Skills (9)
testing10
javascript10
reactive-programming10
ui-design10
render10
rendering10
declarative9
web-components9
ux-design8
Programming languages (6)
Github contributions (5)
standardagents/arrow-js
Nov 2022 - Nov 2022
The first UI framework for the agentic era — tiny, performant, with WASM sandboxes for safe code execution.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:2 reviews, 6 commits, 2 PRs in 1 day
Contributions summary:Rafał primarily focuses on testing and refactoring code related to the `arrow-js` library, which is a reactive UI library. Their commits involve removing duplicate tests, unifying test naming conventions, and extracting a test suite for `nextTick`. They've also added and fixed tests to improve the reliability and functionality of the library, including null support and addressing bugs.
agenticui-frameworkdeclarativereactiverendering
RafalKornel/santa2020
Nov 2020 - Nov 2025
Contributions:23 pushes, 2 branches in 5 years 1 month
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.