Emirhan Kosem
Senior Frontend Engineer at HeyJobs
Berlin, Germany
Summary
👤
Senior🎓
Top SchoolEmirhan Kosem is a Senior Frontend Engineer based in Berlin with nine years of experience building high-performance web applications across fintech, media, telecom and e‑commerce. He specialises in React, Next.js, TypeScript and GraphQL, and is known for modernising legacy stacks, creating reusable component libraries and driving accessibility compliance. Emirhan combines hands‑on implementation with architectural decision‑making to improve performance and developer velocity, having migrated large legacy platforms and supported high‑concurrency OTT systems. He regularly partners with product and design teams to turn design systems into scalable front-end infrastructure and mentors peers through frontend training and manifesto initiatives. Notably, his work spans both customer‑facing funnels and developer-facing tooling, helping teams ship faster while keeping UX and standards front of mind.
9 years of coding experience
10 years of employment as a software developer
Bachelor's degree, Computer Software Engineering, Bachelor's degree, Computer Software Engineering at İstanbul Aydin University
Turkish, English
Github Skills (19)
js-client6
nodejs-library6
client-library6
react5
boilerplate5
api5
fintech5
node-api5
organizer4
social-media4
nextjs4
react-ui-kit3
javascript3
typescript2
storybook2
Programming languages (3)
Github contributions (5)
KemalEmirhan/emirhan.github.io
Jun 2019 - Aug 2022
Personal website built with NextJS + tailwindcss
Contributions:12 PRs, 37 pushes, 8 branches in 3 years 2 months
reactnextjstailwindcssvercel
KemalEmirhan/next-starter-kit
Jan 2020 - Sep 2021
Nextjs boilerplate project
Contributions:14 commits, 11 PRs, 12 pushes in 1 year 8 months
reactboilerplateproject-boilerplatenextjs-boilerplatevercel
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