Senior AI Engineer

Job Description

Senior AI Engineer

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New York (Hybrid)

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A recently minted unicorn — valued at $1.5B and backed by top-tier growth investors — is building the AI infrastructure that powers human-led creator commerce at scale.

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About the Role

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This is a rare shot at building an AI infrastructure layer from the ground up — not a chatbot wrapper, but a full agent orchestration platform every internal AI agent runs on. You'll join a small, elite team defining how autonomous agents get built, evaluated, and trusted in production, inventing the abstractions the company's AI strategy will run on for years.

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What You'll Do

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• Architect the orchestration core powering autonomous, multi-step AI agents — triggers, durable workflows, and runs that can pause and resume around human judgment
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• Build the tool layer that gives agents real-world capability: live integrations with Slack, Linear, GitHub, Notion, and MCP, plus a dynamic tool registry
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• Build the console agent managers use to create, evaluate, and iterate on agents in real time (React)
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• Solve the hard, mostly-unsolved problem of making nondeterministic AI behavior legible — run tracing, evals, feedback loops, cost attribution
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• Design and ship APIs in TypeScript/NestJS on Postgres, deployed on AWS
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What We're Looking For

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• Strong TypeScript, Node.js, and relational database fundamentals
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• Real experience building systems that other engineers build on — internal platforms, frameworks, orchestration, or developer tooling
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• Genuine hands-on AI/agent experience: tool calling, context and memory design, evaluating nondeterministic behavior
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• Experience deploying and operating production services on AWS
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• AI-assisted development (Claude Code, Cursor, or similar) as a core part of how you already work
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• 5+ years of professional software engineering experience
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Bonus Points

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• You've built on or operated durable-execution/workflow engines (Temporal or similar)
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• You've shipped agent systems, worked with frameworks like LangGraph or the Claude Agent SDK, written MCP servers, or built eval harnesses
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• High-growth startup experience
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• You like mentoring and shaping engineering culture
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U.S. citizen or green card holder (this company cannot sponsor visas).

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