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Hi πŸ‘‹, I'm Rafael Roman

CTO & Co-founder Β· 20+ years building software that matters Β· πŸ‡§πŸ‡· β†’ πŸ‡ͺπŸ‡Έ β†’ πŸ‡¨πŸ‡­

πŸš€ What I'm building now

Co-founder & CTO of Upgrid β€” a Swiss energy marketplace that connects local solar producers directly with consumers. Guaranteed lower prices, 100% local renewable energy, zero hardware. We're reshaping how communities buy and sell electricity in Switzerland.

πŸ’Ό The journey so far

20+ years across the full spectrum β€” from IBM and GFT to N26 (one of Europe's largest fintechs) to Personio, and now leading my own company. I've been hands-on building 5+ international banks, scaled systems to millions of users, and led engineering teams through hypergrowth.

The through-line: solving hard problems at scale, in regulated industries, across borders.

πŸ”§ Craft

Backend at heart β€” JVM, Kotlin, distributed systems, event-driven architecture (Kafka Summit speaker, not by accident). I've done mobile (Flutter), led platform teams, and shipped things people actually use. Also built and maintained an app with 2,500+ daily active users as a side project.

πŸ—£οΈ Public speaking

I've spoken at Kafka Summit London, KotlinConf, WeAreDevelopers World Congress, DevBCN, JavaCro, and gave a TEDx talk on AI back in 2019 β€” before it was cool. Happy to talk distributed systems, fintech lessons, energy tech, or honest career advice.

🌍 Background

Born in SΓ£o Paulo πŸ‡§πŸ‡·, spent a decade in Barcelona πŸ‡ͺπŸ‡Έ, now based in Basel πŸ‡¨πŸ‡­. Fluent in Portuguese, Spanish, English, and Catalan.

🀝 Connect

LinkedIn Sessionize Stack Overflow Website


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