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AI Agent Security Architect

Foster City, CA💼 Full-time🗓 2026-09-01 → 2026-09-26

Core

Design, implement, and maintain runtime defense systems, guardrail frameworks, and sandboxing architectures for Replit's autonomous AI agents executing code and reasoning.

Role type

Senior IC AI Agent Security Architect

Builds

Runtime defense systems, guardrail frameworks, sandboxing architectures, and secure design patterns/SDKs for agentic workflows.

Domain

AI/ML Security, Agentic Systems, Cybersecurity

Deliverable

production ML models | infrastructure

Required skills

AI/ML security, LLM application security, agentic frameworks (MCP, LangChain, AutoGen, CrewAI), threat modeling, red teaming, Python/Go/TypeScript, security architecture documentation, risk register management

Preferred skills

runtime sandboxing (Firecracker, gVisor, Docker, WebAssembly)

Responsibilities

Define AI agent security blueprints and architectural patterns; Architect dynamic input/output guardrails and semantic firewalls; Design secure micro-isolated execution environments; Conduct agentic threat modeling and lead red-teaming initiatives; Architect fine-grained permission models and HITL authorization patterns; Design data isolation controls for vector databases and RAG pipelines; Maintain AI security source of truth and documentation; Contribute to Cybersecurity Risk Register; Design auditability and observability standards; Partner with GRC on compliance documentation.

Seniority

Senior, hands-on IC

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