Mateusz Kocz
React Native Developer
Warsaw, Masovian Voivodeship, Poland
Summary
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SeniorMateusz Kocz is a seasoned front-end and React Native developer with 13 years of experience building JavaScript and TypeScript applications and coaching teams to deliver high-quality products. He has led and grown front-end teams of 6–9 engineers across multiple companies, instituting learning time, OKRs, improved code review and pair programming to raise craft and delivery. Hands-on across the stack, he’s worked with React, Angular, Nest.js and Node.js, shipping web and mobile apps for international clients and startups. Based in Warsaw, he’s currently focused on React Native at Superdevs while studying software architecture and design patterns to bring stronger, scalable design to his teams. Notably, he balances leadership with active coding—often stepping in to design architectures, mentor engineers, and implement pragmatic, testable solutions.
13 years of coding experience
9 years of employment as a software developer
English, Japanese, Polish
Stackoverflow
4,542reputation
482kreached
74answers
0questions
forms
top-5%
css
top-5%
typescript
top-5%
angular
top-5%
Github Skills (102)
javascript10
angular10
typescript10
react10
angular-forms9
rxjs9
redux9
forms9
css9
electron9
coordinates9
observables9
nodejs9
web-developer8
reactive8
Programming languages (5)
Github contributions (5)
mateuszkocz/mail-generator
May 2018 - Jun 2018
Contributions:72 commits, 6 pushes in 29 days
mateuszkocz/probot-decorated
Sep 2020 - May 2021
Bundle of decorators for Probot.
Contributions:47 commits, 12 PRs, 24 pushes in 7 months
bundledecoratorsprobot
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