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Why join us Brex is the intelligent finance platform that enables companies to spend smarter and move faster in more than 200 markets. By combining global corporate cards and banking with intuitive spend management, bill pay, and travel software, Brex enables founders and finance teams to accelerate operations, gain real-time visibility, and control spend effortlessly. Brex’s AI-native automation and world-class service eliminate manual expense and accounting tasks for customers so they can focus on what matters most. Tens of thousands of the world's best companies run on Brex, including DoorDash, Coinbase, Robinhood, Zoom, Plaid, Reddit, and SeatGeek. Working at Brex allows you to push your limits, challenge the status quo, and collaborate with some of the brightest minds in the industry. We’re committed to building a diverse team and inclusive culture and believe your potential should only be limited by how big you can dream. We make this a reality by empowering you with the tools, resources, and support you need to grow your career. Engineering at Brex Engineering at Brex is about building systems that scale with speed and intention. Our teams operate with high autonomy and deep collaboration, own outcomes end to end, and push for excellence from architecture to deployment. It’s an environment where engineering is a craft and builders grow by solving meaningful technical problems. What you’ll do The Identity and Access Management team builds and maintains secure, user-friendly authentication and authorization systems that protect users, safeguard company assets, and provide a seamless access experience for developers. The team owns critical platform capabilities including login methods, step-up authentication, our custom authorization platform, account delegation flows like Copilot, Pro Access login, embedded partnerships authentication, and core vendor integrations such as Okta and Oso. As a Senior Software Engineer on IAM, you will lead projects and initiatives to improve the security, reliability, and developer experience of our authentication, authorization, and identity platforms for customers, partners, and internal systems. You will scope and drive projects with clear impact, work cross-functionally with the broader engineering organization, help define the team’s technical quality, 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. Where you’ll work This role will be based in our New York office. We are a hybrid environment that combines the energy and connections of being in the office with the benefits and flexibility of working from home. We currently require Monday, Wednesday and Thursday to be designated in office days. As a perk, we also have up to four weeks per year of fully remote work! Responsibilities: • 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 share

Senior Software Engineer - Identity & Access Management

Don't apply unprepared

Senior Software Engineer - Identity & Access Management

Don't apply unprepared