About Me

Hi, I'm Stefan! Currently I'm building Yap, an AI companion app that's a combination of Character.ai and Tiktok.

I've been in the tech space since late 2017 when I started working in crypto. In 2020, I cofounded and led the development of RAI which is a stablecoin managed by a PI (proportional integral) controller. At its peak, the RAI protocol had more than $390 million in user funds. I was also one of the main contributors to Astroport which used to be one of the largest decentralized exchanges in the world. It averaged $300 million in daily volume and user funds peaked at $1.7 billion.

Prior to RAI and Astroport, I used to dive into Ethereum scaling solutions and build infrastructure that connects traditional finance to DeFi. In another life, I was a mobile app developer.

What I'm Doing

  • design icon

    Consumer Apps

    Building consumer apps at the intersection of gaming, gen AI and social media.

  • Web development icon

    Product Development

    Solidity smart contract development. Javascript/Typescript and some Python on the side.

  • project management icon

    Project Lead

    Leading operations and product development within several startups for the last four years.

Resume

Present

  1. Consumer Apps

    February 2024 - Present

    Building various consumer apps. Currently focused on Yap, an AI companion app that's a combination of Character.ai and Tiktok.

Past

  1. Astroport

    2021 - December 2023

    Project Lead for Astroport, a decentralized crypto exchange that used to rank in the top five in the world by volume (average of $300 million in daily volume)

  2. Reflexer Labs

    2020 - 2022

    Cofounder of RAI, a stablecoin inspired by the original vision for MakerDAO's DAI.

  3. Researcher

    2019 - 2020

    Received a grant from Binance X that allowed me to research stablecoin and other synthetic asset protocols.

  4. Solidity Developer

    2017 - 2019

    Researched Ethereum scaling (Plasma), built infrastructure to connect TradFi loans to smart contracts and various other small projects.