7.6 KiB
OLEG PROSKURIN
Senior Full-Stack Engineer & Tech Lead
Remote · GMT+7 (EMEA full overlap, US East AM) · Deel contractor, W-8BEN
usulpro@gmail.com · Telegram @usulpro · LinkedIn · GitHub · Dev.to · Blog
Summary
Senior Full-Stack Engineer and Tech Lead with 9+ years of production experience across Frontend, Backend, Node.js, and Headless CMS / eCommerce platforms, including 5+ years leading remote projects for US, UK, EU, and AU clients. Built and ran the multi-tenant Tipico US backend on Sanity (75M+ requests/month, 5 publishing environments, white-label core + state architecture). Currently Tech Lead on PrimeUI (primeui.com, launched Feb 2026): a multi-surface platform spanning Studio web app, public API, MCP server, CLI, and code-export pipeline.
Skills
Web & Full-Stack: TypeScript, Node.js, Express, 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
Data & Infrastructure: PostgreSQL, Drizzle ORM, Docker. GraphQL, WebSockets, REST APIs. Vercel, Cloudflare, Serverless & Edge functions
Headless CMS & eCommerce: Sanity, Storyblok, Contentful, Payload, Hygraph, DatoCMS. Shopify, Shopify Hydrogen, Crystallize, Stripe. Multi-tenant content modeling, multi-environment publishing, large-scale migrations
LLM Integration: multi-model routing across Claude / GPT / Gemini, schema validation and retry recovery, prompt caching, MCP server development, cross-host agent integration
Experience
PixelPoint Ltd. — Tech Lead & Senior Full-Stack Engineer, PrimeUI
Feb 2025 – Present · France · Remote PrimeUI (primeui.com, launched Feb 2026) is a multi-surface platform that turns a sitemap and product brief into production-ready websites. It spans a Studio web app, public API, MCP server, CLI, and code-export pipeline. Lead developer, owning ~70% of platform architecture across all surfaces.
- End-to-end full-stack ownership across the platform: Studio web app (TanStack Start, React, TypeScript), Node.js server runtime with PostgreSQL and Drizzle ORM, Dockerized staging and production deployment, public API, MCP server, CLI, code-export pipeline, and component registry.
- 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) and shipped as a standard Next.js project.
- Built and published MCP server: 25 tools letting any external codebase connect to PrimeUI as a third-party integration; cross-host compatibility verified across 6 major coding environments (Claude Code, Cursor, Codex, others).
- 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.
- Architected the generation layer with secure multi-provider LLM integration: multi-model orchestration via Mastra + Vercel AI SDK (10 agents, 17 workflows), per-task routing across Claude / GPT / Gemini with auth and data handling for each provider, schema validation with retry recovery, prompt caching (73% Gemini context-cache hit rate), and WebSocket-based streaming of model responses to the UI.
- Mentored the team on modern AI-augmented development workflow from project start, including transition to Codex ahead of public release. Open-sourced two CLI tools built in the process (codex-bee, epic-loop).
FocusReactive — 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 the multi-tenant Tipico US backend on Sanity Headless CMS: 5 publishing environments, 3 datasets, white-label architecture for core + state teams. Production scale: 122 CMS users, 75M+ requests/month, 98 document types, 165K+ stored documents.
- 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.
- Built an LLM-based content translation pipeline: JSON translation flow for 190 country-specific Storyblok pages, integrated into the publishing process and saving ~1 month of manual work.
- 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%.
- Led technical hiring and team development: designed an assessment mirroring real working conditions, ran 30+ interviews leading to 8 hires, mentored new engineers and reviewed their architectural decisions.
GitNation — 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 — Frontend Developer
Jun 2018 – May 2019 · Singapore Built fuzzy-logic search system and advanced UI animations for the corporate-services platform.
Skipp — JavaScript Engineer
Nov 2017 – Jun 2018 · Moscow B2B marketplace for Skolkovo Innovation Center (100+ companies); GraphQL subscriptions for real-time chat between car owners and lessees.
Portfolio
PrimeUI, MarketFinance, Tipico-Platform, IWM membership, NotSoApp, CasinoReviews, VegasSlotsOnLine, Caleffy, Hadhat, Porchlight, Gitnation, FocusReactive blog, Skolkovo R&D Market, Reverse Health, Firsty
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).
- Developer tooling: codex-bee, a wrapper for long-running Codex sessions; epic-loop, a Codex skill that addresses 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 and Dev.to.
Education
Master in Engineering, Faculty of Electronic Engineering, Moscow Power Engineering University (MPEI), Russia
Languages
English C1 · Russian native