I build and operate high-scale backend systems in Go — the kind where latency, reliability and correctness directly move the product. 6+ years across large marketplaces and ride-hailing (@ozontech, @avito-tech, @inDriver), crypto & Web3 (Blum, GotBit), payments & antifraud, and infrastructure / SRE. I like the hard, low-level parts: profiling, sharding, connection pooling, observability, and making services boringly reliable under load.
🔭 Open to work — Senior Go backend / infra / SRE roles, remote. Most recently at inDrive on the Pricing Platform. CV available on request — just email me.
- 🗄️ Zero-downtime database split — split a ~1 TB monolithic database into 24 shards with no downtime at Ozon — one of Russia's largest e-commerce platforms (NASDAQ IPO 2020) — then sped up Kafka consumers/producers 2.5× under tight resource quotas.
- 🌍 Real-time pricing at global scale — owned services behind inDrive's recommended price across a system spanning 14 AWS EKS clusters; added metrics, tracing and dashboards that sharply cut on-call time-to-diagnose.
- 🛡️ Payment antifraud from scratch — built scoring covering 50%+ of payment traffic at Avito — one of the world's most-visited classifieds platforms — and fixed a hidden PgBouncer/PostgreSQL bug that took daily credit-score recompute for 2M+ users from 75% → 99.99%.
- 📈 Scaled a Go service to 22M DAU — at Blum, a Telegram-based crypto exchange, rewrote the launcher-bot backend from a TypeScript MVP to Go (profiled with pprof / Jaeger), sustaining 200K concurrent users; shipped a Telegram Stars payment gateway and redesigned a 2.5 PB ScyllaDB store down to ~100 TB.
- 🔐 DevSecOps by default — GitOps with secret-scanning and linting gates in CI (
gitleaks,shellcheck,hadolint), minimal hardened images. Honestly, I think most of this should just be every engineer's baseline. - ⛓️ Blockchain infra & multi-chain backend — at GotBit, a major crypto market maker (140+ specialists, 50+ token launches), tech-led two live EVM chain forks on modified
go-ethereum(managed across 24 servers), and shipped backend across EVM / Solana / TON — including a Dedust (TON DEX) SDK that enabled market-making on the network.
Languages: Go (primary) · SQL · Python · TypeScript · a bit of Rust & C/C++
Data stores: PostgreSQL (PgBouncer / Odyssey) · ScyllaDB · Kafka · Redis · ClickHouse · MongoDB
Infra & orchestration: AWS · Kubernetes (EKS) · Helm · ArgoCD · Terraform · Temporal · Docker · Vault
Observability & CI/CD: Prometheus · Grafana · Thanos · Jaeger · OpenTracing · GitHub Actions · GitLab CI
Web3: EVM & go-ethereum internals · Solidity · Solana · TON · DEX & ERC-20/721/1155 integrations
I actually love this stuff outside of a job, too.
- I share Primeagen's philosophy — the more you do something, the better you get, the more interesting it becomes. I've been lucky to have basically zero boring projects (well, except coding a
decimal.hlibrary in C11 with bit-shifts once — though I then useddecimaltypes every day, so maybe that's karma 😁). - TJ's talks pushed me to give Neovim a real shot a few years back. Been a happy user ever since — I can appreciate other editors, but Neovim is just too good (and I love what the team does with the architecture and RPC protocol).
- Still my favourite take on how the internet works: "POV: I'm on my third coffee and you just asked me how the internet works".
- I gave Nix & NixOS a fair 3-week chance, but I'm still not sure they solve the problems they claim to. (Maybe I missed a proper intro — who knows.)
Always happy to talk shop, take feedback, or just say hi. Errata appreciated too 🙏
- 📧 Email: mikhail.n.kuznetsov@gmail.com
- 💬 Telegram: @mikhailnkuz
- 💼 LinkedIn: in/mikenk
Languages: English — C2 · Russian — Native
All opinions are my own and not the views of any current or past employer, contract counterparty, or other affiliated entity.