# OLEG PROSKURIN
**AI Engineer & Tech Lead**

Remote · GMT+7 (EMEA full overlap, US East AM) · Deel contractor, W-8BEN

usulpro@gmail.com · Telegram @usulpro · [LinkedIn](https://www.linkedin.com/in/oleg-proskurin-76784453/) · [GitHub](https://github.com/UsulPro) · [Dev.to](https://dev.to/usulpro) · [Blog](https://focusreactive.com/blog/author/usulpro/)

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## Summary

AI Engineer with **9+ years** of production engineering across **Frontend, Backend, Serverless, Node.js, and Headless CMS / eCommerce** platforms, including **5+ years leading remote projects** for US, UK, EU, and AU clients. Currently Tech Lead on PrimeUI ([primeui.com](https://primeui.com/)), an AI-native website generation platform launched Feb 2026: **3 independent AI flows** (chat, page generation, content writing) orchestrating Claude / GPT / Gemini via Mastra, **MCP server as integration bridge, RAG-based component selection, and a code-export pipeline** that ships production-ready Next.js sites.

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## Skills

**AI Engineering**: LLM orchestration: multi-model routing, context engineering, prompt caching. MCP: server & client development, multi-host integration. RAG & retrieval: embeddings, vector retrieval, hybrid fallback. Eval & observability: guardrails, schema validation, retry recovery. AI-augmented development workflows

**Data & Infrastructure**: PostgreSQL, Drizzle ORM, Docker. Vercel, Cloudflare, Serverless & Edge functions

**Headless CMS & eCommerce**: Sanity, Storyblok, Contentful, Payload, Shopify, Stripe. Content modeling, multi-environment publishing, migrations

**Web & Full-Stack**: TypeScript, Node.js, React, Next.js (App Router, SSR/SSG/ISR). TanStack Start/Router, Tailwind, shadcn-style design systems

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## Experience

### PixelPoint Ltd. — Tech Lead & AI Engineer, PrimeUI
**Feb 2025 – Present** · France · Remote
AI-native website generation platform ([primeui.com](https://primeui.com/), launched Feb 2026) building professional-grade, production-ready code. Drove ~70% of platform architecture across AI layer, sitemap canvas, server runtime, public API, MCP server, CLI, code-export pipeline, and component registry.

- **Cut client-wireframe turnaround at PixelPoint** from a week of Figma prototyping to a few hours: deployed prototypes with real desktop/mobile responsive components, production-level web performance, and dynamic interactions instead of static mockups.
- **Designed, built, and published MCP server** (`@primeuicom/mcp` on NPM, official TypeScript SDK) as the integration layer letting any external codebase (no PrimeUI export required) connect to PrimeUI from inside AI coding environments. 25 tools exposing project management and AI-driven page creation. Tested and tuned across 6 major AI coding agents, including Claude Code, Cursor, and Codex.
- **Architected end-to-end AI generation layer**: multi-model orchestration via Mastra + Vercel AI SDK Gateway (10 agents, 17 workflows), with per-task model routing: Claude Opus 4.6 (Studio chat), GPT-5.2 (outline + section writer), Gemini 2.5 Flash with cached component library (block planning), Claude Haiku 4.5 (short-form tasks).
- **Built RAG-based component retrieval**: 1,555 markdown chunks across 204 components, indexed with OpenAI `text-embedding-3-small` (1536d, 256/32 overlap), cosine top-K with three-tier fallback (exact key → family bucket → semantic).
- **Built quality guardrails and observability for AI page generation**: deterministic rule-based UX scoring for candidate ranking, JSON + props-schema validation with retry recovery (5 retries; triggers: parse, schema, rate-limit), per-step token / latency / cache-hit logging.
- **Optimized cost-quality balance**: 73% Gemini context-cache hit rate via 24-hour TTL on the component library, ~150K input tokens per page variant across ~9 components and ~5 retrievals, 2–3 min end-to-end latency for the default 3-variant page generation.
- **Designed code-export pipeline and CLI**: generates a project repo in ~45 sec, ~1.5 min end-to-end from UI Export to a running local project. Output is a production-ready Next.js application with embedded AI tooling, customer-owned and pre-configured for 8 selectable AI coding agents.
- **Drove team-wide AI-augmented development**: introduced Claude Code from project start, authored team skills and CLAUDE.md conventions, led the team's transition to Codex-based workflow ahead of public release. Built [codex-bee](https://github.com/usulpro/codex-bee) (CLI wrapper for long-running Codex sessions) and [epic-loop](https://github.com/usulpro/epic-loop) (Codex skill framework with tech-lead and developer agent roles for autonomous large-task-list execution) as a result.

### [FocusReactive](https://focusreactive.com) — Tech Lead & Senior Software Engineer
**May 2019 – Feb 2025** (5 yrs 10 mos) · London · Remote
International web consultancy for clients in the US, UK, Europe, and Australia.

- **Architected Tipico US backend platform on Sanity Headless CMS**: 5 publishing environments, 3 datasets, white-label architecture for core + state teams. Operating scale: 122 CMS users, 75M requests/month, 98 document types, 165K+ stored documents.
- **Led migration of 15+ client projects to Headless CMS platforms** (Sanity, Storyblok, Contentful, Payload), restructuring content models and reducing update cycles from weeks to days. Used Claude.ai to analyze inherited codebases, identifying weak points and integration surfaces ahead of migration design.
- **Built a Claude-based content automation pipeline**: JSON translation flow for 190 country-specific Storyblok pages, integrated into the publishing process and saving ~1 month of manual content work.
- **Designed and built CMS-KIT**, an open-source Headless CMS starter and component library used across 15+ client projects, reducing kickoff from days to hours and accelerating development by ~30%.
- **Led technical hiring and team development**: designed an assessment system mirroring real working conditions, conducted 30+ interviews resulting in 8 hires, mentored new engineers; drove team adoption of Claude.ai for research, content, and codebase analysis from 2024 onwards.

### [GitNation](https://github.com/GitNation/live-conferences) — Senior Software Engineer (Part-time, concurrent)
**May 2019 – Feb 2025** · Remote
Built publishing flow via Slack API and a reusable web framework for conference websites; migrated GitNation conferences to Headless CMS.

### [Osome](https://osome.com/sg/) — Frontend Developer
**Jun 2018 – May 2019** · Singapore
Built fuzzy-logic search system and advanced UI animations for the corporate-services platform.

### [Skipp](https://www.skipp.dev) — JavaScript Engineer
**Nov 2017 – Jun 2018** · Moscow
B2B marketplace for Skolkovo Innovation Center (100+ companies integrated); GraphQL-subscription chat for car owners and lessees.

### BL Group — Head of Engineering Team
**2010 – 2017** · Moscow
Led an engineering team designing automation and control systems for dynamic architectural lighting (50+ installations).

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## Portfolio

[PrimeUI](https://primeui.com/), [MarketFinance](https://focusreactive.com/marketfinance-case-study/), [Tipico-Platform](https://focusreactive.com/sanity-platform-case-study/), [IWM membership](https://www.iwm.org.uk/membership#membershipModal), [NotSoApp](https://focusreactive.com/notsoape-case-study/), [CasinoReviews](https://focusreactive.com/casino-reviews-case-study/), [VegasSlotsOnLine](https://www.vegasslotsonline.com/), [Caleffy](https://www.caleffionline.it/), [Hadhat](https://focusreactive.com/hardhat-case-study/), [Porchlight](https://focusreactive.com/porchlight-case-study/), [Gitnation](https://github.com/GitNation/live-conferences), [FocusReactive blog](https://focusreactive.com/blog/), [Skolkovo R&D Market](https://rnd.sk.ru/lk/main), [Reverse Health](https://join.reverse.health/tour/nutrition-monthly-generic-others), [Firsty](https://www.firsty.app/)

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## Open Source & Writing

- **Storybook**: contributor and steering team member during the 2016–2017 community revival; addon maintainer (storybook-addon-console, **7M+ NPM downloads**; storybook-addon-material-ui, **18K weekly**).
- **AI developer tooling**: [codex-bee](https://github.com/usulpro/codex-bee), a wrapper for long-running Codex sessions; [epic-loop](https://github.com/usulpro/epic-loop), a Codex skill solving context degradation in long autonomous coding sessions via techlead/engineer role separation and durable epic state.
- **Technical writing**: articles on frontend, Headless CMS, and developer tooling at [FocusReactive blog](https://focusreactive.com/blog/author/usulpro/) and [Dev.to](https://dev.to/usulpro).

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## Education

**Master in Engineering**, Faculty of Electronic Engineering, Moscow Power Engineering University ([MPEI](https://mpei.ru/lang/en/Pages/default.aspx)), Russia

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## Languages

English C1 · Russian native
