Senior Software Engineer, Identity & Access Management

DigitalOcean is seeking a Senior Software Engineer to join its Customer Trust & Engineering team working on Identity and Access Management. IAM is the bedrock of trust at DigitalOcean: these services sit in the critical path of every request, authorizing billions of transactions per second with single-digit millisecond latency. You won't just maintain existing systems, you will architect the next generation of the Identity platform, supporting AI initiatives, building seamless SSO integrations for global partners, and evolving the policy engine to support complex, agentic workflows.

Key Responsibilities:

• Design and develop high-availability, low-latency authentication and authorization services in Go that scale to handle massive load spikes across global regions.
• Build the IAM foundations for emerging cloud-native AI/ML platforms, designing secure token exchange patterns and identity context injection for agentic AI workflows.
• Lead the implementation of OIDC and SAML integrations, enabling federated Single Sign-On for enterprise customers and strategic global partners.
• Evolve the Policy Engine (Rego/OPA) to support advanced resource-level permissions, dynamic scoping, and network-aware access conditions.
• Design and scale robust, multi-tenant data models for complex hierarchical structures (users, teams, organizations, resource boundaries) that map to enterprise needs.
• Take ownership of service reliability, from fine-tuning Kubernetes deployments to migrating legacy data pipelines to modern eventing architectures.
• Proactively identify and remediate security vulnerabilities, ensuring auth flows are resilient against credential stuffing, session hijacking, and configuration theft.
• Act as a technical lead for major workstreams, conducting deep code reviews and mentoring junior engineers.

Qualifications:

• 5+ years of software engineering experience, with at least 2+ years focused on Identity (AuthN/AuthZ), security products, or high-scale distributed systems.
• Expert-level proficiency in Go and a strong understanding of gRPC microservices architecture.
• Deep knowledge of identity protocols (OIDC, OAuth2, SAML) and access control models (RBAC, ABAC, PBAC).
• Proven ability to build systems that handle consensus, replication, and partitioning at cloud scale.
• Working experience with Kubernetes, SQL (MySQL), and Infrastructure as Code (Terraform).
• Nice to have: Open Policy Agent (OPA) and Rego experience, and familiarity with canary/blue-green deployment strategies on Kubernetes.