Andrey Markin
Full-stack engineer with 6+ years shipping AI-powered web products end to end — TypeScript, Next.js, Node and PostgreSQL with LLM pipelines running in production. Took two platforms from zero to launch: a three-sided marketplace now at 15K MAU, and an AI event-marketing product that generated 30K+ leads for its client. Currently also advises engineering teams on agentic coding and AI evaluation. Owns architecture, delivery and production operations.
Technical Skills
- Languages
- TypeScript, JavaScript, SQL
- Frontend
- Next.js, React, React Native / Expo, Tailwind CSS, shadcn/ui, SSR / SSG / islands, CDN delivery
- Backend
- Node.js, Bun, Effect.ts (layered DI, typed errors), REST, RPC (tRPC, oRPC, Effect RPC), Drizzle, Prisma, Turborepo, RBAC
- Data
- PostgreSQL, SQLite, Redis, ClickHouse, Qdrant (vector search), data mining and ETL pipelines
- AI
- Harness engineering, OpenAI, Anthropic / Claude, Gemini, Vercel AI SDK, RAG and retrieve-and-rerank, autonomous agents, tool calling, context engineering, evaluation and classification systems, LLM observability (Langfuse), MCP, Claude Code / Cursor / Codex
- Infrastructure
- Docker, bare metal, AWS, GCP, Vercel, Cloudflare, GitHub Actions, CI/CD, monitoring and alerting, Stripe & Stripe Connect
Experience
AI Engineering Consultant
- Advised Dashly, an analytics platform processing millions of events monthly, on an AI evaluation system that scores support and sales chatbot traces across dev, preview and production — catching quality regressions before release and cutting manual trace review 70%.
- Consulted 5+ engineering teams on agentic coding with Claude Code and Cursor: automated PR review, parallel dev streams, prototyping, CI conventions, agent rules and TDD practice — raising developer productivity 25% on average.
- Built a full software factory in 30 hours — Claude and Codex agents with self-improving loops, observability, and usage and infrastructure management — taking a prototype from brief to deployed in hours instead of days.
Lead Full-Stack Engineer
- Led development and launch of an AI event-marketing platform (web and mobile): 5 campaigns, 30K+ leads and 25K+ monthly interactions.
- Increased targetable leads 35% and conversion 15% by building AI pipelines (data mining, LinkedIn scraping, semantic search) and autonomous copilot agents with context management, tool calling and human-behaviour browser automation.
- Cut outreach costs 15% through evaluation and classification systems in the lead pipeline, ICP matching, and optimised AI-agent spend across operations.
Lead Full-Stack Engineer
- Launched a three-sided marketplace from scratch in 2 months; now at 15K MAU, 100K+ monthly events and 200+ artworks from dozens of artists across 2 legal entities.
- Built the production backend on Effect.ts (layered DI, typed errors) and PostgreSQL, including AI pipelines that match artworks to properties.
- Shipped multi-entity payments on Stripe Connect, splitting revenue between artists, hosts and the platform.
- Delivered platform monitoring, RBAC and a responsive SSR / SSG / islands / CDN frontend, and laid the codebase out so coding agents could work in it safely.
Full-Stack Engineer
- Built a B2B SaaS tools aggregator with Next.js, TypeScript, React and PostgreSQL: routes and sitemaps generated from the database, static rendering with incremental regeneration, and layered caching in front of PostgreSQL.
- Built AI agent pipelines, API data bots and Python backend services, and designed the databases behind product features and AI workflows — including semantic search on pgvector and an agent that answers catalogue questions through SQL tool calling.
Earlier: Internal Tools Developer, Helping to Leave (2022–2023) — built the internal product suite for finance, payroll, grants and aid evaluation, handling €1M+ a year · Web Developer, Children Must Live (2021–2022) · Database Integrator, Ozma (2020–2021)
Projects
Telegram Claude + Codex: Remote Coding Agents via Telegram
A Telegram bot that runs coding agents on your own server from your phone. Send a message, watch the work stream back into the chat, and approve the plan with a button: no terminal, no SSH.
Recruit AI: Intelligent Recruitment Matching
An open-source hiring marketplace where the ranking is the product: jobs surface the right candidates, candidates surface the right jobs, and both sides are scored by the same rules. Built as a reference for search that gets measured instead of guessed at.
oRPC-to-WebMCP Bridge
One package that hands a web app's own features to the AI assistant running in the browser. Built in the open as a working reference for WebMCP, the draft browser API for AI tools.
AI Form Assistant
A form you fill by talking instead of typing. Answer in your own words, by voice or text, and the fields fill in as you go: an open-source starting point for anyone whose signup or intake form loses people halfway.
Outrizz AI: Event Engagement Platform
An event marketing platform for B2B sales teams. It finds the right people before a trade show and talks them into coming, then captures everyone who stops at the booth and follows them up while the event is still running.
Intelligent Aggregator Platform
A catalogue of B2B software where buyers ask a question in plain English and get an answer back from the live listings, instead of clicking through category pages.
PickArt: Art-Hospitality Marketplace Platform
A marketplace that puts artists' work on hotel walls and lets guests buy the piece they are looking at: hosts get free curation, artists get a sales channel, guests take the art home.
Products
Peektrace
See exactly what is loaded in your coding agent's context window.
Agent Skills
Agent skills that teach Claude Code and Codex how I work.
SEO Lens
See every meta tag on a page, and fix the structured data that decides how you show up.
Education
Northeastern University
Business Administration & Management
Let's Work Together
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