Senior AI Security Engineer — Build Secure AI Systems

Rozgoo; United States; Remote; USD 140,000 - 200,000; Full time

Job summary

Reddit is hiring a Senior Security Engineer, AI Security to help teams build and ship AI-powered products securely. You will review AI-powered product designs, threat model LLM and agentic workflows, and build reusable security primitives that make secure AI development easier for teams across Reddit.

This role combines product security judgment with hands-on engineering to secure the systems, tools, and workflows behind Reddit's AI efforts.

Qualifications

• 5+ years of experience in product security, application security, software security, security engineering, backend engineering, or security platform engineering.
• Strong application security fundamentals, including secure design review, threat modeling, code review, vulnerability prioritization, and

Responsibilities

• Review and threat model AI-powered product features, LLM integrations, agentic workflows, MCP servers, tools, plugins, retrieval systems, model outputs, and internal AI tools before launch.
• Build reusable AI security primitives such as guardrails, scanners, policy checks, tool-use controls, registries, sandboxes, libraries, and workflow-native enforcement points.
• Design security tooling that can sit in the inference, retrieval, or execution path to detect and prevent prompt injection, jailbreaks, tool misuse, data leakage, unsafe code generation, and suspicious agent behavior.
• Partner with teams building products and platforms with AI to define practical security controls that fit how they design, build, and ship.
• Proactively find, fix, and prevent AI security issues, while making any required product or engineering changes clear and low-friction for partner teams.
• Turn one-off AI security issues into systemic fixes, paved paths, measurable controls, and reusable guidance.

Skills

Security engineering

Threat modeling

Secure design

Code review

Vulnerability prioritization

Job description

Reddit is hiring a Senior Security Engineer, AI Security to help teams build and ship AI-powered products securely. You will review AI-powered product designs, threat model LLM and agentic workflows, and build reusable security primitives that make secure AI development easier for teams across Reddit.

This role combines product security judgment with hands-on engineering to secure the systems, tools, and workflows behind Reddit's AI efforts.