oswaldbdev

Senior AI engineer and full-stack TypeScript developer in Paris/US seeking contract or freelance work building production-ready LLM features, agents, and RAG systems.

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Remote Paris contract senior 4 years experience

Skills

TypeScriptNext.jsNode.jsPostgreSQLVercel AI SDKOpenRouterLangfuseLLM agentsRAGdocument extractionevalsobservability

Domains

AI engineering full-stack backend LLM applications B2B SaaS

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Location: Paris, France / US
Remote: Yes (happy to work US East or West Coast hours)
Willing to relocate: Yes
Technologies: TypeScript, Next.js, Node.js, PostgreSQL, Vercel AI SDK, OpenRouter, Langfuse; LLM agents, RAG, document extraction, evals
Résumé/CV: https://oswaldb22.com/cv.pdf
Email: [email protected]
AI engineer, full-stack TypeScript. Contract or freelance, full-time availability. I ship LLM features that hold up in production: agents, RAG, document extraction, evals and observability, plus the Next.js app around them.
Recent: designed and built a B2B SaaS with an AI agent and a document pipeline alone, now in production with paying customers. Late 2025: agents, RAG pipeline and an AI audit for a startup. Before that, LLM agent architecture at SAP (2021–2025).
Best fit: adding an agent to an existing product, or making a shipped LLM feature reliable. Fixed-scope four-week builds welcome. Invoicing through a French company (W-8BEN-E for US clients).

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