Senior Backend & AI Engineer — 15 years in production.
I build and rescue production systems end-to-end. I co-founded a taxi marketplace and took it from an empty repo to 2.4M+ orders across 3 countries. Today I'm the engineer clients bring in when a live codebase is messy and can't stop working while it's fixed — whether a human wrote it or an AI did. I default to a staged refactor over a risky rewrite, and I'll tell you honestly which one your project needs.
WHAT I DO
• Backend & architecture — PHP/Laravel, Node.js, Go, REST APIs, PostgreSQL/MySQL
• AI & LLM — multi-agent systems, RAG, LLM evaluation, generative-AI & computer-vision pipelines (built and run in daily use)
• Mobile — 15 years of iOS (Swift, Objective-C) and React Native; App Store / Play Store compliance and app rescue
RECENT (last 3 years)
• QWQER Express (EU delivery) — courier iOS app + warehouse-platform backend (Symfony, Laravel + Filament)
• SolRock — revived a dormant Go marketplace-monitoring bot: 15 country markets, subscription billing
• USIP VPN — React Native + native rescue: Android 15 compliance, 14-state subscription flow, IAP backend
• Own AI R&D — multi-agent LLM framework (87.8% Macro-F1, above the source paper's GPT-4o); real-time voice-translation pipeline; product-photo generative pipeline (6 foundation models on rented GPUs)
SELECTED RESULTS
• iQTaxi — 2.4M+ orders, 209K users, 3 countries, built solo; ran for years on my architecture after I left
• Master's thesis on LLM evaluation — 95/100, named the best thesis of its cohort by the State Examination Commission; analysis report published online
EDUCATION — MSc, LLM-evaluation methodology (2026); co-authored a conference paper.
HOW I WORK — direct, written, async. I stay for years: my longest engagements ran six, four and nearly four years. Tell me what you're dealing with — I'll say honestly whether I'm the right fit and what I'd do first.
