Sebastian Zarych
Technical Lead - Web Engineer at Worldpay
London, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolSebastian Zarych is a London-based Technical Lead and senior web engineer with a First-Class Computer Science degree and over 17 years of commercial experience delivering high-traffic, award-winning front-end systems. He specializes in modern JavaScript ecosystems (TypeScript, Angular, React, Node) and serverless AWS architectures, having led projects that handle more than a billion hits per month. Sebastian blends design sensitivity with engineering rigor—his work has been featured in global web awards and galleries—while maintaining strong practises in testing, accessibility, performance and CI/CD. At organisations from Metropolis and Telegraph Media Group to Worldpay, he’s driven scalable UI architectures, progressive/isomorphic apps and data visualisations. Notably, he pairs craft-focused UI tooling (D3, Sketch/Adobe) with pragmatic architecture decisions (microservices, Lighthouse-driven performance tuning), making beautiful interfaces that reliably operate at scale.
9 years of coding experience
10 years of employment as a software developer
Bachelor of Science, Computer Science (Programming), Information System Engineering, First-Class Honours, Bachelor of Science, Computer Science (Programming), Information System Engineering, First-Class Honours at University of Information Technology and Management in Rzeszow
English, Polish, German
Github Skills (9)
worldpay7
dockerfile6
vscode5
docker-compose5
docker4
vscode-extension4
visual-studio-code3
visual-studio3
android-sdk1
Programming languages (3)
Github contributions (5)
Worldpay/ts-jest-starter-kit
Nov 2021 - Sep 2024
Commonly used for interviews and hiring
Contributions:2 PRs, 3 pushes, 2 branches in 2 years 10 months
szarych/hackathon-integration-examples
Sep 2023 - Dec 2023
Created with CodeSandbox
Contributions:1 review, 14 PRs, 15 pushes in 3 months
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