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ClosedLab Computer Science & Engineering LLC is hiring a software engineer to design and ship AI assistants and multi-step agent workflows. This role is remote within the US and requires hands-on experience with Python or TypeScript and LLM APIs.
You will build retrieval pipelines with citations, integrate AI with CRMs and documents, and create evaluation sets to monitor quality, latency, and cost. In the first 90 days, you’ll ship an assistant improvement, lead an agent workflow for a client,
Build assistants, agent workflows, and retrieval systems that do real work inside client businesses — safely and measurably.
Engineering Remote (US) Full-time [Salary or rate range]
Design and ship AI assistants and multi-step agent workflows
Build retrieval pipelines with citations and access controls
Create evaluation sets and monitor quality, latency, and cost
Integrate AI with CRMs, phone systems, email, and documents
Design human-approval steps for consequential actions
Explain trade-offs to clients in plain language
3+ years of software engineering in Python or TypeScript
Hands‑on experience with LLM APIs and tool calling
Understanding of retrieval, prompting, and evaluation
Production mindset: logging, retries, and error handling
Voice or SMS agent experience
MCP or agent framework experience
FIRST 90 DAYS
Ship a first assistant improvement and review our evaluation sets.
Lead an agent workflow for a client from design to launch.
Raise measured quality on a production assistant.
ClosedLab is an equal opportunity employer.