Senior Security Engineer, Product Security
Core
Senior Product Security Engineer building production security services and adversarially testing AI/LLM-backed features for a consumer finance platform.
Role type
Senior IC product security engineer (AI/LLM focus)
Builds
Production security services (APIs, streaming transports, proxy/CLI), AI security tooling, and automated security workflows
Domain
Consumer finance, AI/LLM security, cloud infrastructure
Deliverable
production ML models | product features | infrastructure
Required skills
Backend engineering (TypeScript, Node.js, .NET, Python), API security (REST, GraphQL, OAuth, rate limiting), threat modeling, manual penetration testing, AWS/IaC, LLM adversarial testing
Preferred skills
AppSec tooling estate ownership, vendor evaluation, security policy/standards, cryptography, detection engineering, product management experience
Technologies
TypeScript, Node.js, .NET, Python, AWS, Docker, Kubernetes, SAST/SCA tools, LLM frameworks
Responsibilities
Adversarially test AI/LLM features (prompt injection, jailbreaks, exfiltration); build and operate production security services; automate security workflows; triage vulnerability findings; threat model product designs; manual testing and retesting of fixes; maintain AppSec tooling estate; secure infrastructure (IAM, secrets, IaC); enable engineers via training/docs; evaluate security tools; support incident response and vulnerability management
Seniority
Senior, hands-on IC