Damien Feugas
Software Engineer at Vercel
Villeurbanne, Auvergne-Rhône-Alpes, France
Summary
🤩
Rockstar🎓
Top SchoolDamien Feugas is a seasoned software engineer with 16 years of experience building performant web and edge systems, currently working on Vercel's Edge Functions to make the web faster. He combines deep backend and runtime expertise—contributing to high-profile open-source projects like Next.js and Vercel's edge-runtime—with product-focused delivery work across React, Node.js, GraphQL and cloud platforms. Previously he led engineering and delivery at NearForm, optimizing performance for large Node.js services (including measurable latency and startup improvements) and guiding teams through architecture and internationalization efforts. Comfortable switching between hands-on coding, DevOps and people-facing roles, he also contributed nuanced fixes around middleware, abort signals and runtime error handling that improve developer experience at scale. Trained in France with a master's in IT, he pairs pragmatic engineering with a long history of cross-disciplinary collaboration.
16 years of coding experience
15 years of employment as a software developer
Technology degree, Analysis & Development, valedictorian, Technology degree, Analysis & Development, valedictorian at IUT Aix en ProvenceMaster degree, Information Technology, Master degree, Information Technology at Institut national des Sciences appliquées de Lyon
French, English
Github Skills (39)
french10
benchmark10
middleware10
javascript10
testing10
edge-function10
http10
typescript10
internationalization10
benchmarking10
nextjs10
request-handler10
localization10
webapi10
typescript-types10
Programming languages (17)
Github contributions (5)
stephen-hardy/xlsx.js
Feb 2013 - Apr 2013
XLSX.js is a JavaScript library for converting the data in base64 XLSX files into JavaScript objects - and back! Please note that this library is licensed under the Microsoft Office Extensible File License - a license NOT approved by the OSI. While this license is based off of the MS-PL, which is OSI-approved, there are significant differences.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:12 commits, 1 issue in 2 months
Contributions summary:Damien primarily focused on enhancing the functionality and usability of the `xlsx.js` library. They implemented several new features, including setting column widths, cell horizontal/vertical alignment, and font styling (bold, italic, font name, size) when saving the XLSX files. Additionally, the user introduced support for cell borders, including color customization, and merged cells horizontally and vertically. These changes demonstrate a commitment to improving the library's capabilities.
base64javascriptjavascript-objectsxlsxxlsxjs
vercel/edge-runtime
Jul 2022 - Jan 2023
Developing, testing, and defining the runtime Web APIs for Edge infrastructure.
Role in this project:Back-end Developer
Back-end DeveloperContributions:41 reviews, 11 commits, 16 PRs in 6 months
Contributions summary:Damien primarily focused on improving the edge runtime environment. Their contributions included fixing fetch functionality, specifically addressing missing internal components for POST requests. They also improved the abort controller/signal implementation and fixed invalid typings. The user also worked on handling unhandled rejections and exceptions within the edge runtime.
testing
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