What I'm building now and what I've built before.
Done-for-you AI customer support for Shopify e-commerce brands.
AI agents draft customer-support replies — email, DMs, live chat — in a brand’s own voice, trained on past conversations. A human approves anything that touches money, and every action gets logged. Built and run solo, in market with early pilot customers.
Russian-language ebook teaching Go from scratch.
My first digital product — a self-published ebook teaching Go from scratch. The response was strong enough that I started Youtube channel and ended up recording two online courses.
Russian-language channel — coding tutorials, later self-improvement, habits and discipline.
Started as programming tutorials in Golang, aimed at a Russian-speaking developer audience. Grew to 30,000 subscribers over four years and pivoted into self-improvement and discipline content. Built and sold education products off the back of it.
30k subscribers · 2 courses sold · ~$50k
Multi-tenant LMS SaaS for creators to build and sell online courses.
A white-label course platform — Go backend, React frontend — that let creators spin up a branded “school” on their own domain. Recruited most of the team by publishing the build process as a YouTube series. Powered two of my own course sites before I stopped development in late 2021 and open-sourced it.
328 stars on the backend · team of ~13 contributors
Double-entry accounting SaaS built natively for the crypto & web3 economy.
Co-founded and led engineering on an accounting platform for crypto-native businesses: connect an on-chain wallet and transactions get booked automatically, double-entry, alongside fiat. Event-sourced ledger, CQRS, gRPC microservices in Go, a React frontend. Reached a working MVP over about six months with a small team before the project stalled.
CQRS, event-sourced ledger, gRPC microservices · reached MVP, never launched
Vibe-coded trading journal for retail forex traders. Launched in a week, closed on purpose.
Built solo with AI coding agents in about a week and sold into an existing trading audience — paying customers within 24 hours of launch. Closed deliberately after the unit economics made the ceiling clear: retail forex traders churn too fast for a low-ticket B2C SaaS to work without real distribution capital. Now archived and open-sourced. The full story, including the math, is in this essay.
12 paying customers · €108 MRR peak
Curated backend-engineering resource list, in English and Russian.
A structured list of resources for learning backend development — still maintained, still the most-starred thing I’ve made.
3.4k stars
REST API example built on Uncle Bob's clean architecture principles.
A reference implementation showing how clean architecture maps onto a real Go REST API. Widely used as a teaching example.
800 stars
REST API for a to-do list application, in Go.
A small, complete Go REST API — auth, CRUD, Postgres — built as a teaching reference and picked up by people learning the language.
300 stars
Turn YouTube into notes you'll actually re-read.
A small tool for turning long-form YouTube videos into notes worth keeping, built between Cadenflow work.