Staff AI Platform Engineer

The role

You will serve as a hands-on builder of the enterprise AI platform, including the Gateway, Harness, and Semantic Layers. You will write production code to govern, observe, secure, and scale AI activity across the company.

What you will do

• Design, build, and operate components of the AI Gateway.
• Build and maintain pieces of the Harness layer including agent orchestration and model abstraction.
• Develop and extend production services in Python and pydantic.ai.
• Contribute to React/TypeScript surfaces.
• Implement MCP/tool wiring for internal and SaaS-embedded agents.
• Contribute to the Claude and Gemini Enterprise plugin framework.
• Instrument the platform for observability including metrics, tracing, and audit trails.
• Participate in on-call and operational support for platform services.
• Write technical documentation and participate in architecture and code reviews.
• Partner with engineers across Enterprise Data, Enterprise Apps, Product Development, and Infosec.

Required qualifications

• Hands-on experience building production services such as an API gateway, internal platform, or data platform.
• Experience with authentication/authorization, rate limiting, observability, or audit logging.
• Practical experience with agent orchestration frameworks (LangGraph or equivalent).
• Experience calling hosted model providers such as AWS Bedrock or Google Vertex.
• 5 or more years of professional software engineering experience.
• Experience building or operating AI and ML infrastructure in a production environment.
• Strong Python skills, ideally with FastAPI.
• Solid software engineering fundamentals including clean, tested, production-grade code and strong API design skills.
• Comfort operating in a fast-moving, still-forming platform environment.

Nice to have

• Direct AI and LLM platform experience
• Working familiarity with React and TypeScript
• Exposure to or curiosity about the Model Context Protocol (MCP)
• Familiarity with enterprise AI deployments such as Claude Enterprise (Anthropic) or Gemini Enterprise

Benefits

• Restricted Stock Units (RSUs)
• Employee Stock Purchase Plan (ESPP)
• Flexible time off
• Paid company holidays and paid sick time
• Gender-neutral parental leave
• Grandparent leave
• Medical, dental, and vision coverage
• 401(k) retirement plan with company match
• Life and disability insurance
• Health and dependent care FSA
• Voluntary benefits (hospital, accident, critical illness)
• Employee Assistance Program (EAP)

About the company

SentinelOne is a company at the intersection of AI and security, pioneering a new operating model for cybersecurity. Their AI-native platform unifies protection across endpoint, cloud, identity, data, and AI systems.