Hello, I’m Yurii.Well, here we are

Solo Project · 2022

A Uniswap MEV arbitrage bot – in pursuit of making millions on arbitrage.

• Rewrote the Uniswap V3 SDK for a 100× faster swap estimate
• Borrow-amount math matched the numbers of live competitor transactions
• Open-sourced on GitHub

One of DeFi’s original AMMs – a multi-chain DEX for swaps, liquidity and yield.

Founding Frontend Engineer · 2021 – 2023

A fintech startup out to replace SWIFT.

• Built the bank-facing payment portal – empty repo to banks in production
• SOLID throughout – two years of change, no rewrite
• Led a frontend team of two

Frontend Developer · 2018 – 2021

Where clients go when the website has to be perfect – 300 people, 5,700+ projects since 1995.

• Built the designers’ motion and interactive ideas, often at the edge of what browsers could do
• Owned the frontend for Sellavi, National Projects and Brixo
• Kept Stoloto, a nationwide lottery, running – legacy at scale

Solo Entry · 2019

Telegram’s first worldwide JS performance competition – render a fast, interactive chart in plain JavaScript.

• Took a $1,000 prize against a worldwide field
• Drew everything on canvas – no charting library, no framework

Self-employed · 2016 – 2018

Where it started – building websites for small businesses.

• 50+ sites in two years – promo pages, blogs, WordPress
• Clients came through my own site and Google Ads