Rauno Tegelmann
Technical Lead — Frontend & Product Engineering
I build scalable products, lead frontend architecture, and turn complex ideas into clean, maintainable systems.
About
I'm based in Tallinn, Estonia.
I currently work at XYB, where we're reimagining financial infrastructure from the ground up.
I care deeply about clean architecture, developer experience, and shipping features at velocity. I enjoy working across the full product lifecycle — from early idea to production, and love experimenting with new technologies. When building independently, I like to work across the stack — from data models and APIs to UI, deployment, and iteration, so I'm always learning something new.
Over the past 7+ years, I've:
- Led frontend architecture for large fintech platforms
- Built micro-frontend systems used across multiple teams
- Designed shared UI platforms and component libraries
- Helped teams move faster with better tooling and DX
- Worked closely with design to deliver pixel-perfect UI
- Built and shipped independent projects and open-source tools used by real users
Current Focus
Right now I'm focused on:
- ❤️React & React Native
- ⚡Frontend architecture, micro-frontends
- 🧩End-to-end product development — from APIs and DBs to UI
- 🤖AI-accelerated development & product iteration
- 🎨Design-driven engineering
- 📦Developer experience & tooling
- 🚀Building (and shipping) products
Projects
Outside of XYB, I'm building Mosaic — a portfolio tracking app designed to bring clarity to fragmented investments across multiple platforms.
I also built Plex Rewind — an open source statistics and dashboard app for Plex, which has gained a solid community of users and contributors, with over 500,000 downloads.