Senior Security Engineer, AI Security
Core
Senior Security Engineer responsible for threat modeling, designing security primitives, and building tooling to secure AI-powered products, LLM workflows, and agentic systems at Reddit.
Role type
Senior IC security engineer (AI/LLM security)
Builds
Reusable security primitives (guardrails, scanners, registries, sandboxes), security tooling for inference/retrieval/execution paths, and platform controls for AI development.
Domain
Internet / AI Security / LLM Security
Required skills
Application security fundamentals, threat modeling, secure design review, backend engineering, security automation, AI/LLM risk reasoning, infrastructure security, engineering judgment, distributed systems security.
Preferred skills
Securing AI/LLM products and agent frameworks, building guardrails and policy engines, agent sandboxing, AI red teaming, Go/Python/JavaScript/TypeScript, Kubernetes and microservices security, mentoring engineers.
Technologies
LLMs, MCP servers, Kubernetes, APIs, microservices, CI/CD, cloud environments, containers.
Responsibilities
Review and threat model AI-powered product features and agentic workflows before launch; Build reusable security primitives and tooling to detect and prevent prompt injection, jailbreaks, and data leakage; Partner with product and platform teams to define practical security controls; Proactively identify and fix AI security issues while making remediations low-friction for partners; Turn one-off issues into systemic fixes and reusable guidance.
Seniority
Senior, hands-on IC
