Mert Altın
Software Engineer at Trendyol Group
Türkiye, Turkey
Summary
🤩
Rockstar🎓
Top SchoolMert Altın is a software engineer with eight years of experience specializing in frontend development and modern JavaScript/TypeScript stacks, currently contributing at Trendyol Group. He has built user-focused features for high‑traffic products, including a live-streaming e-commerce platform, and brings strong OOP, MVC and SOLID discipline to improving UX and performance. An active open-source contributor and member of the Node.js/Express ecosystem, he has made notable backend contributions to core projects like nodejs/node and undici—adding redirect and WebSocket support and fixing runtime-level issues. Comfortable working with cross-functional teams and C-level stakeholders, he combines Scrum experience with hands-on code review and CI automation know-how. He holds a Computer Programming degree from Muğla Sıtkı Koçman University, completed Harvard’s CS50, and maintains an active GitHub portfolio demonstrating both application and runtime-level engineering.
8 years of coding experience
3 years of employment as a software developer
Programme of Computer Science and Programming, Programme of Computer Science and Programming at Muğla Sıtkı Koçman ÜniversitesiHigh school, programming, High school, programming at Gülten ÖzaydınCS50’s Introduction to Computer Science, CS50’s Introduction to Computer Science at Harvard University
İngilizce, Turkish
Stackoverflow
1reputation
0reached
1answer
0questions
Github Skills (17)
unit-testing10
javascript10
clientside10
testing10
http10
httpc10
http-client10
webclient10
nodejs10
websocket9
websockets-client9
client-websocket9
websocket-client9
performance-optimization8
windows8
Programming languages (12)
Github contributions (5)
nodejs/node
Dec 2022 - May 2026
Node.js JavaScript runtime ✨🐢🚀✨
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:395 reviews, 125 PRs, 603 comments in 3 years 6 months
Contributions summary:Mert contributed to the Node.js core repository, addressing issues related to non-ASCII character parsing in the test runner and optimizing the `napi_set_property` function within the Node.js API. The user also implemented a test for surrogate pair filenames on Windows, and fixed an issue with `util.inspect` for compression/decompression streams. The contributions demonstrate involvement in core JavaScript runtime functionality and native addon development, enhancing the platform's robustness and performance.
javascriptnodejsnodejsruntime
nodejs/undici
Dec 2023 - Jan 2026
An HTTP/1.1 client, written from scratch for Node.js
Role in this project:Back-end Developer
Back-end DeveloperContributions:64 reviews, 9 PRs, 77 comments in 2 years 1 month
Contributions summary:Mert primarily contributed to the `undici` project by implementing new features related to redirect handling and WebSocket support, demonstrating a focus on improving the HTTP client's functionality. The user added options for controlling redirect behavior, including `throwOnMaxRedirect`, and introduced an example of WebSocket proxying. They also made changes to the `fetch` implementation, improving the output of various classes and fixing inspection outputs. The user collaborated with other developers, working on code refactoring and test improvements.
nodejs
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