AI Engineer (Backend TypeScript or Python) - Strong backend engineering in TypeScript/Node.js (preferred) or Python, with production API design experience - Has built LLM harnesses/scaffolds with agentic loops, RAG pipelines, and tool-calling architectures - Experience designing multi-agent systems and integrating LLMs with internal/external APIs - Bonus: AI platform/developer tooling, evaluation & observability frameworks, AI security & guardrails