Senior TypeScript / Node.js engineer. I build systems that have to be right: production LLM pipelines with evaluation, guardrails and auditability, and real-time on-chain trading systems. Founding engineer at three companies, shipping since 2011.

Now (since March 2026) — sole engineer of a production LLM system at a stealth AI startup in a regulated, high-stakes domain. Node/TypeScript (Fastify) on PostgreSQL + pgvector; a multi-model pipeline with an independent safety layer; a hand-built eval harness — regression-pinned prompts, LLM-as-judge scoring with measured agreement, and CI checks that block unreviewed changes to safety-critical behaviour. Plus a multi-vendor coding-agent harness over MCP.

Before — lead engineer on 9 Lives, an open-source on-chain prediction market for 5/15/60-minute price markets. Owned the entire off-chain stack — public REST APIs that partners built their own clients on, indexer, data model, the services that keep on-chain state and the app in sync — and the app itself: automated market creation and rotation, price-feed ingestion, resolution and settlement, and the production incident response for the live markets. $100k → $400k+ of trading volume in under a month. Also shipped Longtail and contributed to ternoa-js.

Stack — TypeScript · Node.js (Fastify, NestJS) · REST & GraphQL APIs · PostgreSQL / pgvector · MySQL · Redis · React / Next.js · React Native · Docker · AWS / GCP · MCP · Go (GraphQL APIs)

Remote, from Greece (EU) or Türkiye, no sponsorship needed in the EU. Open to direct employment, EOR or a B2B contract through my own company.

ogous.dev · CV · LinkedIn · [email protected]

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