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.
10 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 (14)
nodejs-library8
client-library7
nodejs-client6
react6
organizer5
nextjs5
social-media4
fintech4
boilerplate4
tailwindcss4
javascript3
storybook3
react-ui-kit2
vercel2
Programming languages (3)
Github contributions (5)
KemalEmirhan/emirhan.github.io
Jun 2019 - May 2026
Personal website built with NextJS + tailwindcss
Contributions:1 review, 25 PRs, 69 pushes in 7 years
reactnextjstailwindcssvercel
KemalEmirhan/next-starter-kit
Jan 2020 - Sep 2021
Nextjs boilerplate project
Contributions:14 commits, 11 PRs, 12 pushes in 1 year 8 months
nextjsboilerplatereactvercel
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.