Principal IAM & Authorization Security Engineer

Roblox; San Mateo (CA); On-site; USD 385,000 - 443,000; Full time

Benefits offered by this job

Equity compensation

Job summary

Roblox is seeking a Principal Security Software Engineer for the Enterprise Security team in San Mateo to design and build production-grade security software protecting Roblox's corporate infrastructure.

You will partner with security professionals and cross-functional teams to advance identity and access governance, policy enforcement, and integrations at scale. The role requires 10+ years in SWE/security, deep IAM expertise, and a strong bias for secure-by-design solutions.

Qualifications

• Deep understanding of Human and Machine Identity and Authentication protocols like OAuth 2.0, SCIM 2.0, SAML 2.0, Transaction tokens, FIDO2/WebAuthn and Passkeys, SPIFFE/SPIRE
• Experience with policy-as-code or authorization frameworks (OPA/Rego, Cedar, Zanzibar/ReBAC)
• Proficiency in Python, Go, Rust
• Proficiency with security-relevant system design: session management, audit logging, rate limiting, secret storage
• Experience in Threat modeling for authentication and authorization systems
• Understanding of Zero trust architecture and least-privilege access patterns
• 10+ years of relevant professional experience combining SWE and security

Responsibilities

• Build identity and access systems: Design, implement, and own integrations across Roblox's IAM ecosystem, including SSO federation, SCIM provisioning/deprovisioning pipelines, OAuth 2.0 authorization servers, and token lifecycle management for both human and non-human identities.
• Own authorization at scale: Build fine-grained authorization services and policy models that make least privilege and separation of duties the default across enterprise systems.
• Lead identity for agentic AI: Define and build how AI agents authenticate and are authorized at Roblox, including agent identity issuance, authorization for MCP servers and tool access, delegated and on-behalf-of access, scoped credentials, and short-lived token flows with auditable guardrails.
• Drive secure-by-design implementations: Partner with Corporate Engineering, DevOps, and product teams to embed identity and authorization controls into enterprise systems, developer workflows, and AI tooling, extending vendor platforms with custom integrations where needed.

Job description

Roblox is seeking a Principal Security Software Engineer for the Enterprise Security team in San Mateo to design and build production-grade security software protecting Roblox's corporate infrastructure.

You will partner with security professionals and cross-functional teams to advance identity and access governance, policy enforcement, and integrations at scale. The role requires 10+ years in SWE/security, deep IAM expertise, and a strong bias for secure-by-design solutions.