Selected Work
A timeline of the companies Alex Devero has built and scaled products for as a frontend engineer and tech lead — from CDN77 and Digitoo to Persoo, Supernova, and StartMonday.
CDN77 (2023–present)
Full-stack Developer
- Custom design-system migration, modular refactor, testing culture
- Future-ready codebase with improved velocity
Digitoo (2021–2023)
Front-end & React Developer
- Migrated MVP to Next.js (SSR), led UI migration to Tailwind
- Delivered 7 major features and enabled 40+ client onboarding
Persoo (2019–2021)
Frontend Developer → Co-Founder
- Rebuilt widgets (search, carousels), modernized JS stack
- Mentored team, shaped product strategy as a co-founder
Supernova (2017–2019)
Frontend & React Developer
- Built React/TS MVP, revamped frontend architecture
- Partnered on product direction—foundation for YC pivot
StartMonday (2016–2017)
Frontend Developer
- Developed web apps using TypeScript
Frequently asked questions
What companies has Alex Devero worked with?
Over 10+ years, Alex Devero has built and scaled products for CDN77, Digitoo, Persoo (as co-founder), Supernova, and StartMonday — in frontend and tech-lead roles using React, Next.js, and TypeScript.
What is Alex Devero’s career background?
Alex is a Senior Frontend Engineer and current Frontend Tech Lead. He co-founded Persoo (acquired by Luigi’s Box in 2024), was an early engineer at Supernova (the first Czech startup accepted into Y Combinator, 2019), and now leads frontend at CDN77.
Want the full picture? See my résumé, or get in touch about senior frontend and tech-lead roles.