AI Agent Engineer

We’re looking for a AI Agent Engineer to join the team. You'll build and own core AI features, in addition to helping to ensure the health of our engineering systems. You will work across the stack, focusing on areas you are most excited about and that bring value to customers. Beyond your technical work, you will gain leadership opportunities early on as we grow our engineering team. You'll be involved in scaling the product, the team, and the entire company. 🚀

• →Lead the development of agent pipelines: design modular SDK components, drive production rigor, and support the growth of junior engineers.
• →Architect composable agent SDKs with built-in safety and robust fallback strategies.
• →Design tracing tools and alert dashboards to ensure agent performance and quality.
• →Own the agent lifecycle—from chaining and testing to CI/CD and production rollout.
• →Collaborate closely with security and operations teams to ensure agent governance and auditability.
• →Mentor and uplevel teammates on best practices in observability and resilience.
• →Solve challenging technical problems across the stack to develop critical customer-facing features; includes the frontend (React, Typescript), communication layer (GraphQL, Apollo), and backend (Python, Flask, sqlalchemy).

We’re looking for engineers who want to shape the next generation of intelligent agents—people who care deeply about building reliable, modular systems and elevating those around them. If you’re energized by architecting robust agent SDKs, creating tools that ensure safety and observability, and mentoring others, you’ll thrive at Lumos.

• You’ve built and deployed AI-driven workflows — such as tool-calling systems, retrieval-augmented generation (RAG) pipelines, or autonomous agentic orchestration using frameworks like LangChain, LangGraph.
• Strong software engineering experience with 5+ years of building and scaling end-to-end production systems.
• Strong knowledge of API design, system performance, and software architecture.
• Proficiency in modern programming languages such as Go, TypeScript, or Python, and familiarity with frameworks like React.
• Familiarity with identity and access management systems, such as SCIM, OAuth2, SAML, or integrating with IDPs and HRIS tools.

• $175,000 - $300,000 Note that this range is a good faith estimate of likely pay for this role; upon hire, the pay may differ due to skill and/or level of experience.

• This role will be onsite in person 2-3 times a week in our San Francisco HQ