AI Agent Security Architect
Full-time
Replit
Responsibilities
- Define the long-term security architecture and technical patterns for autonomous agents, MCP integrations, multi-turn reasoning, and multi-agent coordination.
- Architect and deploy runtime guardrails, semantic firewalls, intent verification filters, and policy-enforcement systems.
- Design secure, short-lived, micro-isolated execution environments for agent code, shell commands, and tool use.
- Conduct agentic threat modeling and lead automated and manual AI red-team initiatives.
- Design fine-grained permissions, delegated authorization, Human-in-the-Loop controls, and least-privilege protections for agents.
- Secure vector databases, RAG pipelines, and long-term agent memories through data isolation and poisoning-prevention controls.
- Maintain authoritative AI security design patterns and SDKs for engineering teams.
- Document agentic security risks in the Cybersecurity Risk Register using relevant industry frameworks.
- Establish tamper-evident logging and telemetry standards for agent reasoning, tool execution, and context assembly.
- Translate AI security controls into enterprise audit documentation and support Sales with complex AI security inquiries.
Requirements
- 6+ years of experience in security engineering or security architecture, including at least 2+ years dedicated to AI/ML security, LLM application security, or agentic-framework security.
- Deep understanding of agentic architectures and protocols, including MCP, LangChain, AutoGen, CrewAI, and ReAct frameworks.
- Hands-on knowledge of indirect prompt injection, goal hijacking, tool parameter tampering, data poisoning, and context contamination.
- Strong experience applying OWASP Top 10 for LLMs & AI Agents, NIST AI RMF, and MITRE ATLAS.
- Proficiency in Python, Go, or TypeScript/JavaScript, with experience reviewing code and building security tooling or guardrails.
- Experience authoring, maintaining, and promoting technical security architecture documentation.
- Ability to communicate complex non-deterministic AI risks to technical engineering teams and executive stakeholders.
- Demonstrated experience contributing to an enterprise Cybersecurity Risk Register.
- Experience designing runtime sandboxing and isolation technologies such as Firecracker, gVisor, Docker, or WebAssembly is a bonus.
Benefits
- Competitive salary and equity.
- 401(k) program with a 4% match for US employees.
- Health, dental, vision, and life insurance.
- Short-term and long-term disability coverage.
- Paid parental, medical, and caregiver leave.
- Flexible Time Off and holidays.
- Commuter benefits for in-office US employees.
- Monthly wellness stipend.
- Autonomous work environment.
- In-office setup reimbursement for in-office employees.
- Quarterly team gatherings and in-office amenities.
Vacancy posted 6 days ago
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