Hybrid Senior Software Engineer – IAM

at Lambda

• Job title: Senior Software Engineer – IAM
• Job type: Full Time
• Experience level: Senior
• Salary: $296,000 - $445,000 per year
• Degree requirement: Bachelor's Degree
• Tech skills: Cloud, Distributed Systems, Python, Go
• Location requirements: Hybrid, San Francisco, United States

About the role

• Senior Software Engineer building and scaling Lambda’s IAM platform enabling secure access control. Designing core IAM capabilities and collaborating with cross-functional teams.

Responsibilities

• Design and implement core IAM components including identity models, authentication flows and authorization systems
• Build and evolve enterprise IAM features such as RBAC, SSO (SAML/OIDC), SCIM provisioning, MFA, and audit logging
• Own end-to-end delivery of IAM features from technical design to production rollout and monitoring
• Collaborate with teams across API Experience, Billing, Core Cloud Platform, Console Experience, Infrastructure and Security to integrate consistent identity and access patterns across systems
• Contribute to API design and ensure consistency in identity and permission semantics across services
• Participate in design reviews and provide thoughtful input on system architecture and tradeoffs
• Debug and resolve complex production issues in security-sensitive systems
• Improve system reliability, observability, and operational workflows for IAM services
• Mentor junior engineers and contribute to raising the bar on engineering quality

Requirements

• 5+ years of backend or platform engineering experience
• Strong experience building or working on authentication and/or authorization systems
• Solid understanding of IAM fundamentals:
• Authentication (OAuth2, OIDC, SAML)
• Authorization (RBAC, ABAC, or similar models)
• Identity lifecycle concepts (provisioning, deprovisioning)
• Experience building distributed systems in a cloud or SaaS environment
• Strong coding skills in Python or Go, with experience building production backend systems
• Experience designing APIs and working with service-oriented architectures
• Ability to independently own projects and deliver high-quality systems
• Strong debugging, problem-solving, and communication skills

Benefits

• Health, dental, and vision coverage for you and your dependents
• Wellness and commuter stipends for select roles
• 401k Plan with 2% company match (USA employees)
• Flexible paid time off plan that we all actually use