Principal Security Software Engineer, IAM

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators.

At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there.

A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone.

As a Principal Security Software Engineer on the Production IAM team, you will set the technical direction for how identity and access work across Roblox's production infrastructure, from the mTLS-based identity that services use to authenticate to one another, to the privileged access controls that govern how engineers reach production. The team is accountable for Roblox's machine and workload identity platform, its centralized authorization engine, its production access management platform, production PKI and certificate lifecycle, and just-in-time privileged access for engineers. As an individual contributor in Production IAM, you will define multi-year strategy, drive alignment across Roblox Platform, mentor senior and staff engineers, and personally build the hardest parts of these systems. As AI agents become first-class actors in production, you will also help pioneer how they get identity, prove who they are, and receive safely-scoped access.

You will

• Lead the architecture for production identity and access. Define and evolve the end-to-end design for machine, workload, human, and AI-agent identity across our hybrid on-prem and cloud fleet, making secure access invisible when it can be and intuitive when it needs attention.

• Drive mTLS and workload identity to full production enforcement. Lead the technical strategy for our SPIFFE/SPIRE-based identity platform, service-mesh integration, managed service accounts, and certificate issuance, storage, and rotation.

• Advance just-in-time, least-privilege access for engineers. Architect just-in-time, least-privilege, and break-glass access to production, replacing static, long-lived credentials with short-lived, auditable access that stays reliable even during dependency or identity-provider outages.

• Evolve the centralized authorization engine and a secure golden path. Mature our centralized authorization engine and the access-control models behind it (RBAC/ABAC and risk-based access) so decisions are consistent, fine-grained, and testable.

• Pioneer identity and access for AI agents. Define how agents obtain credentials, receive scoped permissions, and have their sessions managed across their lifecycle, setting the patterns for agentic identity at Roblox..

• Lead across the org and raise the bar. Author RFCs and multi-year roadmaps, align stakeholders across Roblox Platform, mentor senior and staff engineers, and raise the technical bar through design review, on-call ownership, and hiring.

You have

• 8+ years of relevant professional experience building scalable, distributed backend systems, with a track record of driving architecture end to end.

• Deep expertise in identity and access management — authentication, authorization, and access-control models such as