Eugene Fidelin
Engineering Manager EBay Ads at eBay
Amsterdam, North Holland, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolEugene Fidelin is an engineering manager at eBay Ads in Amsterdam and a seasoned full-stack software architect with 18+ years building scalable e-commerce and web applications. He combines hands-on frontend expertise in vanilla JavaScript/TypeScript and React with backend proficiency in Node.js/Express, and has led frontend architecture and technical teams at Marktplaats/Adevinta. Known for obsessing over performance, security and CI/CD, he has designed high-traffic frontend platforms, backend-for-frontends, microservices and BDD-driven pipelines that serve millions of users. An active open-source contributor, his work on angular-xeditable improved edit-in-place UX while contributions to node-mocks-http added headers/locals support and fixed a security vulnerability to strengthen testing. He pairs entrepreneurial roots—co-founding local portals—with pragmatic engineering leadership that helps teams ship resilient, measurable product outcomes.
12 years of coding experience
19 years of employment as a software developer
National Technical University "Kharkiv Polytechnic Institute"
English, Ukrainian, Dutch
Stackoverflow
2,189reputation
204kreached
16answers
0questions
github
top-5%
encryption
top-5%
Github Skills (19)
javascript10
node-js10
testing10
javascripts10
html510
angularjs10
mocking10
express-js10
github9
http9
encryption9
next-js8
facebook-oauth6
drupal-76
php6
Programming languages (9)
Github contributions (5)
vitalets/angular-xeditable
Jul 2015 - Nov 2019
Edit in place for AngularJS
Role in this project:
Front-end Developer
Front-end DeveloperContributions:17 releases, 130 commits, 124 PRs in 4 years 4 months
Contributions summary:Eugene primarily contributed to the front-end components of the Angular-xeditable project. Their commits focused on building, fixing, and updating various editable directives for different HTML5 input types. They also updated the codebase for UI-Bootstrap components and made documentation fixes to enhance the usability of the library. Their changes reflect a commitment to maintaining and improving the edit-in-place functionality within the Angular framework.
placeangularjsangularin-placeedit-in-place
eugef/node-mocks-http
Feb 2018 - Aug 2021
Mock 'http' objects for testing Express,js, Next.js and Koa routing functions
Role in this project:Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:22 releases, 20 reviews, 42 commits in 3 years 7 months
Contributions summary:Eugene contributed to the `node-mocks-http` repository by implementing new features, fixing bugs, and improving the test suite. Key contributions include adding functionality for appending headers in mock responses, incorporating a locals object, and addressing a security vulnerability. The user's work also involved refactoring and fixing issues related to request handling, including hostname and header management.
testingjavascriptexpressroutingmocking
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