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Salary: USD 192,000 - 240,000 / annual
Brex is an intelligent finance platform serving tens of thousands of companies globally with corporate cards, banking, spend management, bill pay, and travel software. The Identity and Access Management team builds secure, user-friendly authentication and authorization systems that protect users, safeguard assets, and provide seamless access experiences for developers, customers, and partners.
As a Senior Software Engineer on the IAM team, you will lead projects and initiatives to improve the security, reliability, and developer experience of authentication, authorization, and identity platforms. You will scope and drive projects with clear impact, work cross-functionally across the engineering organization, help define the team's technical quality standards, and help evolve the identity platform as Brex invests in signed identity propagation, delegated and agent identity, fine-grained authorization, stronger auditability, and enterprise-ready customer authentication experiences.
Key responsibilities include:
- Design, build, and operate backend systems and APIs for authentication, authorization, identity context, and audit-related workflows
- Lead engineers on initiatives end to end, from technical design and implementation through rollout, measurement, and operational support
- Improve login and access experiences across SSO, MFA, step-up authentication, delegated access, and enterprise identity flows
- Build and extend authorization systems that support custom roles, resource-aware access control, and secure defaults for product teams
- Help create durable, identity-aware audit trails and attribution for user, service, delegated, and agent-driven actions
- Partner closely with engineers across Brex to make IAM integrations secure by default and easier to adopt through clear patterns, tooling, and shared libraries
- Mentor engineers on the team to deliver high-quality code and produce operational improvements that raise the bar for reliability and maintainability
The role is hybrid-based in Seattle with Monday, Wednesday, and Thursday designated as in-office days. Up to four weeks per year of fully remote work is available.
REQUIREMENTS:
- 7+ years of professional experience designing, developing, and deploying applications
- Strong software engineering fundamentals and experience building reliable production backend systems
- Experience leading complex projects and mentoring other engineers
- Strong API design fundamentals, rigor around testing, code quality, and documentation
- Understanding of core IAM concepts such as authentication, authorization, sessions, tokens, MFA, SSO, OAuth, SAML, OIDC, or RBAC
- Clear communication, collaborates well across teams, and effective in cross-functional technical discussions
- Demonstrating care about operational excellence and knowing how to improve system reliability, reduce toil, and maintain high-quality services over time
- Strong product and engineering judgment and ability to balance security, usability, and developer experience
BONUS:
- Experience working on identity and access management, authentication, authorization, or audit systems in production
- Hands-on experience with Okta, Oso, SSO, SAML, OIDC, OAuth, passkeys, or WebAuthn
- Experience building enterprise-facing admin controls, custom roles, delegated access flows, or audit trails
- Worked on platform teams that provide shared infrastructure, paved roads, or secure-by-default frameworks for other engineering teams
