Modestos Kaffes
Staff Software Engineer at Hack The Box
Amsterdam, North Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolModestos Kaffes is a Staff Software Engineer based in Amsterdam with 11 years of experience focused on frontend engineering and UX-driven product design. He blends a designer’s attention to detail with engineering rigor, repeatedly improving performance and usability—most notably boosting a white-label framework’s Lighthouse score from ~40 to over 90. His career spans startups and scale-ups where he built design systems, feature-flagging and A/B tooling, microfrontend monorepos, and user-facing admin dashboards that accelerated delivery and decision-making. He favors rapid iteration and user-first solutions, having driven measurable wins like 30% faster deployments and a 25% reduction in loan processing time. Comfortable leading cross-functional teams, he pairs hands-on implementation with product sensibility and has a longstanding interest in translating UX thinking into real-world tech. Trained in mathematics and computer science, he brings a rare mix of analytical depth and creative product instincts to frontend architecture.
11 years of coding experience
16 years of employment as a software developer
Computer Science, Computer Science at Hellenic Open UniversityMathematics, Mathematics at Aristotle University of Thessaloniki (AUTH)
English, Spanish, Dutch, Greek
Stackoverflow
178reputation
8kreached
1answer
1question
Github Skills (160)
testing10
schema10
dummy-data10
synthetic-data10
react-hooks10
factory-boy10
factory10
generator10
fake-data-generator10
sane10
higher-order-component10
react10
react-components9
javascript9
pandas9
Programming languages (20)
Github contributions (5)
modkaffes/adguardhomeremote-translations
May 2021 - Jul 2023
Repository tracking translations for AdGuard Home Remote
Contributions:4 PRs, 26 pushes, 10 branches in 2 years 1 month
adguard-hometranslationstrackingadguard
modkaffes/personal-website
Oct 2017 - Mar 2025
Contributions:19 PRs, 85 pushes, 31 branches in 7 years 5 months
reactnextjsastrotailwindcss
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