Gürgün Dayıoğlu
Software Engineer at Spendesk
Paris, Ile-de-France
Summary
🤩
Rockstar🎓
Top SchoolGürgün Dayıoğlu is a software engineer based in Paris with five years of experience building high-performance back-end systems and a focus on reliable, fast software. He has contributed to marquee open-source projects like Node.js and Fastify, where his work optimized core modules, timers, and content-type parsing to improve performance and type safety. Gürgün combines practical industry experience at Ubisoft and Spendesk with strong academic training in AI and engineering from University of Montpellier and INSA Rouen. He excels at refactoring and eliminating redundancies, favoring simplicity and measurable efficiency gains in runtime code. Comfortable navigating both systems-level JavaScript and web framework internals, he brings a developer-centric perspective that bridges production needs and open-source ecosystem improvements. An interesting detail: his contributions often target subtle performance bottlenecks and correctness in core runtime behavior—work that quietly benefits a large portion of Node.js users.
5 years of coding experience
1 year of employment as a software developer
Master's degree, Artificial Intelligence, Master's degree, Artificial Intelligence at University of MontpellierHigh School Diploma, High School Diploma at İzmir Özel Saint-Joseph Fransız LisesiMaster's degree, Science and Technology Management, Master's degree, Science and Technology Management at IAE MontpellierEngineer's degree, Engineer's degree at INSA Rouen Normandie
Turkish, English, French
Stackoverflow
1reputation
0reached
0answers
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Github Skills (14)
timers10
web-framework10
timer10
nodejs10
javascript10
performance-monitor10
performance-analysis10
api-design9
typescript-types9
runtimes9
performance-optimization9
typescript9
typescripts9
refactoring8
Programming languages (7)
Github contributions (5)
fastify/fastify
Jul 2021 - Mar 2025
Fast and low overhead web framework, for Node.js
Role in this project:
Back-end Developer
Back-end DeveloperContributions:236 reviews, 58 PRs, 27 pushes in 3 years 9 months
Contributions summary:Gürgün contributed to the Fastify web framework by addressing type-related issues, optimizing code, and implementing new features. They improved the content type parser functionality, including stricter checks and case-insensitive content type matching. Furthermore, the user enhanced method matching and HTTP handling within the framework. The user's work directly improved the framework's performance, type safety, and overall functionality.
apihapispeednode-jsjavascript
nodejs/node
Jun 2021 - Mar 2025
Node.js JavaScript runtime ✨🐢🚀✨
Role in this project:Back-end Developer
Back-end DeveloperContributions:48 reviews, 28 PRs, 95 comments in 3 years 10 months
Contributions summary:Gürgün primarily contributed to the Node.js runtime core by modifying several core modules and internal utilities. Their work involved optimizing existing code, removing redundant features, and addressing potential performance bottlenecks. Key contributions include simplifying functions, removing unnecessary optional chaining, and refactoring code to improve efficiency. The user also made various changes related to timers, addressing potential issues and improving their functionality.
windowsnode-jsjavascriptlinuxruntime
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