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 2022 – present
A contactless payment ring from a Barcelona fintech, with companion iOS and Android apps.
CTO from the start in September 2022: built and runs the iOS app, the Android app and the backend
Built with Kotlin, SwiftUI, Node.js, Express, MongoDB, AWS
- Certified by Visa and Mastercard
- Card tokenisation onto the ring over the phone’s NFC, on iOS and Android
- Rated 4.9/5 from 300+ customer reviews
- Covered by El País, La Vanguardia, RTVE, El Economista and Cinco Días
- Rikki in Bulgaria: I built the rikki.bg shop and run the business
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F2 Tool
2023 – present
A financial freedom calculator: five numbers in, seventy-five years of projections out.
My own product. I brought in a developer for the first version in 2023, and I've built it myself since 2025.
Built with React, Express, AWS Lambda, MongoDB
- 75-year horizon with best, likely and worst-case paths
- Free, no sign-up required
- Also works inside Claude, through its own connector
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Sprint Ledger
September 2026 – present
Makes sprint scope change searchable in Jira Cloud: what was added after a sprint started, removed, completed or carried over, as JQL functions and fields, for every sprint a site has run.
My own product. I found the niche through research, and I built it alone.
Built with Atlassian Forge, Jira Cloud API
- In private beta; coming to the Atlassian Marketplace
- Free for teams of up to 10 users
Background
I've been a software developer since 2013 and a long-term investor since 2019.
- Since 2024
- Independent
- I work across several projects, through my own company, Yord Soft EOOD.
- 2018 – 2024
- FactSet
- Senior software engineer
- I started on Cognity, a Bulgarian risk product FactSet had acquired, moved on to internal DevOps projects, and then worked on the company's main risk engine and its migration to the cloud.
- 2015 – 2018
- Astea Solutions
- Software developer
- At this software outsourcing company in Sofia, I worked on many projects for clients such as Teladoc Health, Plotagraph and Amplify, for which we built interactive web courses.
- 2013 – 2014
- Icom Computers
- Software developer
- ERP system development and support.
- 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.
I work through my own company, Yord Soft EOOD, registered in Bulgaria since 2016 and VAT-registered. It is the party you sign with, and it sends the invoices.