I build software where money is involved.
I'm CTO of Rikki, a payment ring certified by Visa and Mastercard, and I build products of my own. I work with early-stage founders as their technical partner.
Tell me what you're buildingWork
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Rikki
September 2023 – present
A contactless payment ring from a Barcelona fintech, with companion iOS and Android apps.
CTO since September 2023: built and runs the iOS app, the Android app and the backend
Built with iOS, Android, NFC
- Certified by Visa and Mastercard
- Rated 4.9/5 from 300+ customer reviews
- Covered by El País, La Vanguardia, RTVE, El Economista and Cinco Días
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A financial freedom calculator: five numbers in, seventy-five years of projections out.
Built with React, Express, AWS Lambda, MongoDB
- 75-year horizon with best, likely and worst-case paths
- Free, no sign-up required
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Sprint cost tracking for Jira. Answers "what did that sprint actually cost?" in one click.
Built with Atlassian Forge, Jira Cloud API
- Listed on the Atlassian Marketplace
- First sprint cost figure within five minutes of install
- Free for teams of 1–10, full functionality
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A fast-paced multiplayer word game — categories, one letter, and a running clock.
- Daily challenges, leaderboards and player-voted word validation
- Monetised via coin and Pro tiers
Background
I've worked at FactSet, and I've been a long-term investor for more than ten years. Today I work independently, across several projects.
- Based in
- Sofia, Bulgaria, in the EU
- Languages
- English and Bulgarian
- Time zone
- EET / EEST (UTC+2 / UTC+3)
Working together
I join early-stage founders as their technical partner, for an hourly rate plus a small share of the company. I also take on business clients when the project is a good fit.