Principal Engineer, Agentic AI Systems

About this role

Principal Engineer, Agentic AI Systems

Inflection · Palo Alto, California, United States · Palo Alto

Frontier labonsiteprincipal$400k–$550k

Apply on the lab’s site ↗

At a glance

Highlights

• Lead architecture for production AI agents that reason and execute workflows.
• Build evaluation and observability systems for multi-step agent reliability.
• Turn ambiguous user problems into shipped AI-native experiences.

What they offer

• Meaningful equity component
• Robust medical, dental and vision options with employer HSA, FSA and DFSA contributions
• 401k matching program
• Flexible Time Off, 10 paid holidays and 5 days sick leave
• Parental, Medical and Family care leave
• Cell-phone, wellness and office setup stipends

Ideal candidate

A hands-on technical leader who loves turning ambiguity into shipped AI products, combining strong product judgment with ownership and collaboration to mentor others and raise the bar for reliable agents.

Requirements

• 10+ years of engineering experience, including 3+ years at staff/principal scope
• 2+ years building production-grade agentic or LLM-powered systems used by real customers
• Strong Python or TypeScript experience
• Experience building LLM-powered products, AI agents, RAG systems or model-integrated applications
• Strong backend fundamentals including APIs, databases, queues, testing and cloud infrastructure
• Experience with tool/function calling, structured outputs, retrieval and model evaluation
• Strong product judgment with ability to move from ambiguous problem to shipped product
• Bachelor's degree or equivalent in related field

visa sponsorship : Support of country-specific visa needs for international employees living in the Bay Area