Eugene Fidelin
Engineering Manager EBay Ads at eBay
Amsterdam, North Holland, Netherlands
Summary
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Rockstar🎓
Top SchoolEugene Fidelin is an engineering manager at eBay Ads with over 18 years of full-stack web development experience and 12 years in senior technical roles, specializing in Node.js, Express, and React. He combines hands-on architecture and frontend expertise with a track record of leading teams to build high-performance, secure, and scalable e-commerce platforms. As a former frontend architect and technical lead at Marktplaats and Adevinta, he guided large-scale web application initiatives and introduced optimizations across the stack. An active open-source contributor, he has improved testing utilities and Angular edit-in-place components—work that includes fixing security issues and refining mock HTTP tooling for Express/Next/Koa. Based in Amsterdam with an MS in engineering and software development, he pairs deep technical craft with practical leadership in production environments.
12 years of coding experience
15 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 (17)
javascript10
expressjs10
testing10
angularjs10
mocking10
html10
nodejs10
github9
http9
encryption9
nextjs8
facebook-oauth6
php6
fetch6
drupal6
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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