Principal Engineer, Agentic AI Systems

About the Company

Inflection AI is a Public Benefit Corporation empowering people with human-centered, emotionally intelligent AI. Inflection AI created Pi, the world’s first emotionally intelligent AI, to help people work through decisions, emotions, and challenges.

Responsibilities

• Build production AI agents that can plan, retrieve context, call tools, take actions, and recover from failures
• Design agent architectures for task decomposition, tool routing, memory, state management, and safe execution
• Create evals and observability systems for multi-step task success, tool-call accuracy, and hallucination resistance
• Integrate agents with APIs, databases, SaaS tools, and enterprise systems
• Improve reliability through structured outputs, guardrails, and human-in-the-loop controls
• Partner with product, design, and engineering teams to turn ambiguous user problems into shipped AI-native features
• Make pragmatic model and infrastructure choices across proprietary and open-source models
• Own the technical direction of agentic AI systems and provide coaching to the team

Requirements

• 10+ years of engineering experience
• 3+ years at staff/principal or equivalent scope
• 2+ years building production-grade agentic or LLM-powered systems
• Strong Python or TypeScript experience
• Experience building LLM-powered products, AI agents, RAG systems, or automation workflows
• Strong backend engineering fundamentals (APIs, databases, queues, testing, observability, cloud infrastructure)
• Experience with tool/function calling, structured outputs, embeddings, and prompt design
• Bachelor’s degree or equivalent in a related field

Preferred Qualifications

• Experience with LangGraph, LlamaIndex, OpenAI, Anthropic, Hugging Face, or vLLM
• Experience with agent memory, planning, multi-agent systems, or browser automation
• Experience building eval pipelines, synthetic test cases, or AI safety systems
• Experience with enterprise SaaS, productivity tools, or workflow automation
• Experience working in early-stage, high-growth, or zero-to-one environments

Benefits

• Robust medical, dental, and vision options
• 401k matching program
• Flexible Time Off, 10 paid holidays, and 5 days sick leave
• Parental, Medical, and Family care leave
• Generous cell-phone, wellness, and office set up stipends
• Support of country-specific visa needs for international employees in the Bay Area