88 lines
7.7 KiB
Markdown
88 lines
7.7 KiB
Markdown
# OLEG PROSKURIN
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**Senior Full-Stack Engineer & Tech Lead**
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Remote · GMT+7 (EMEA full overlap, US East AM) · Deel contractor, W-8BEN
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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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---
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## Summary
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Senior Full-Stack Engineer and Tech Lead with **9+ years** of production experience across **Frontend, Backend, Serverless, Node.js, and Headless CMS / eCommerce** platforms, including **5+ years leading remote projects** for US, UK, EU, and AU clients. Built and operated at consumer scale on the Sanity-based Tipico US backend (75M+ requests/month). Currently Tech Lead on PrimeUI ([primeui.com](https://primeui.com/), launched Feb 2026): a multi-surface platform spanning Studio web app, **public API, MCP server, CLI, and code-export pipeline**. AI-augmented development is daily practice: Claude Code and Codex as primary tools, with personally-built agentic tooling layered on top.
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---
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## Skills
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**Web & Full-Stack**: TypeScript, Node.js, React, Next.js (App Router, SSR/SSG/ISR). TanStack Start/Router, Vite, Tailwind, shadcn-style design systems. Web performance and accessibility: Core Web Vitals, Lighthouse, WCAG
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**Data & Infrastructure**: PostgreSQL, Drizzle ORM, Docker. GraphQL, WebSockets, REST APIs. Vercel, Cloudflare, Serverless & Edge functions
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**Headless CMS & eCommerce**: Sanity, Storyblok, Contentful, Payload, Hygraph, DatoCMS. Shopify, Shopify Hydrogen, Crystallize, Stripe. Content modeling, multi-environment publishing, large-scale migrations
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**AI Engineering**: LLM orchestration & guardrails: multi-model routing, context engineering, prompt caching, schema validation, retry recovery. MCP: custom server development; cross-host agent integration
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---
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## Experience
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### PixelPoint Ltd. — Tech Lead & Senior Full-Stack Engineer, PrimeUI
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**Feb 2025 – Present** · France · Remote
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PrimeUI ([primeui.com](https://primeui.com/), launched Feb 2026) is a multi-surface platform for AI-assisted generation of production-ready websites, spanning Studio web app, public API, MCP server, CLI, and code-export pipeline. Lead developer, owning ~70% of platform architecture across all surfaces.
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- **End-to-end full-stack ownership across the platform**: Studio web app (TanStack Start, React, TypeScript), Node.js server runtime, public API, MCP server, CLI, code-export pipeline, and component registry.
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- **Designed and shipped the code-export pipeline and CLI**: generates a production-ready Next.js project repo in ~45 sec and ~1.5 min end-to-end from UI Export to a running local project. The generated codebase is fully owned by the customer (no vendor lock-in), shipped as a standard Next.js project, and pre-configured for 8 selectable AI coding agents.
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- **Built and published MCP server** (`@primeuicom/mcp` on NPM): 25 tools letting any external codebase connect to PrimeUI from inside AI coding environments; cross-host compatibility verified across 6 major coding agents (Claude Code, Cursor, Codex, others).
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- **Cut client-wireframe turnaround at PixelPoint** from a week of Figma prototyping to a few hours: deployed responsive prototypes with production-level performance and dynamic interactions instead of static mockups.
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- **Architected the AI generation layer** with multi-model orchestration via Mastra + Vercel AI SDK (10 agents, 17 workflows), per-task model routing across Claude / GPT / Gemini, prompt caching (73% Gemini context-cache hit rate), and WebSocket-based adaptation of streaming model responses to UI rendering requirements.
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- **Drove team AI-tooling adoption**: introduced Claude Code from project start, led team transition to Codex ahead of public release. Built custom developer tooling on top (codex-bee, epic-loop).
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### [FocusReactive](https://focusreactive.com) — Tech Lead & Senior Software Engineer
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**May 2019 – Feb 2025** (5 yrs 10 mos) · London · Remote
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International web consultancy for clients in the US, UK, Europe, and Australia.
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- **Architected Tipico US backend on Sanity Headless CMS**: 5 publishing environments, 3 datasets, white-label architecture for core + state teams. Scale: 122 CMS users, 98 document types, 165K+ stored documents.
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- **Led migration of 15+ client projects to Headless CMS and commerce platforms** (Sanity, Storyblok, Contentful, Payload, Crystallize, Shopify, Hydrogen), restructuring content models and cutting update cycles from weeks to days. Used Claude.ai for inherited-codebase analysis ahead of migration design.
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- **Built a Claude-based content automation pipeline**: JSON translation flow for 190 country-specific Storyblok pages, integrated into publishing and saving ~1 month of manual work.
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- **Designed and built CMS-KIT**, an open-source Headless CMS starter and component library used across 15+ client projects, cutting kickoff from days to hours and accelerating development by ~30%.
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- **Led technical hiring and team development**: designed an assessment mirroring real working conditions, ran 30+ interviews leading to 8 hires, mentored new engineers; drove team adoption of Claude.ai for research, content, and codebase analysis from 2024 onwards.
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### [GitNation](https://github.com/GitNation/live-conferences) — Senior Software Engineer (Part-time, concurrent)
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**May 2019 – Feb 2025** · Remote
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Built publishing flow via Slack API and a reusable web framework for conference websites; migrated GitNation conferences to Headless CMS.
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### [Osome](https://osome.com/sg/) — Frontend Developer
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**Jun 2018 – May 2019** · Singapore
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Built fuzzy-logic search system and advanced UI animations for the corporate-services platform.
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### [Skipp](https://www.skipp.dev) — JavaScript Engineer
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**Nov 2017 – Jun 2018** · Moscow
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B2B marketplace for Skolkovo Innovation Center (100+ companies); GraphQL subscriptions for real-time chat.
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---
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## Portfolio
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[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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---
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## Open Source & Writing
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- **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**).
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- **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.
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- **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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---
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## Education
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**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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---
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## Languages
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English C1 · Russian native
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