Backend Engineer (Golang), Software Supply Chain Security: Auth Infrastructure

• Design and implement core components of GitLab's authentication infrastructure layer, including Envoy proxy configuration, token services, and policy decision systems.
• Develop solutions for critical infrastructure challenges such as bi-directional gRPC tunnels, mutual Transport Layer Security (mTLS), and service mesh architecture.
• Build and maintain authentication infrastructure that supports GitLab.com, self-managed, Dedicated, and air-gapped deployment models.
• Optimize the performance and reliability of authentication and authorization decisions at scale across distributed systems.
• Implement and refine monitoring, observability, and debugging capabilities for authentication services to ensure secure and stable operation.
• Collaborate with Authentication, Authorization, Platform, and Infrastructure teams to align infrastructure capabilities with product and architectural requirements.
• Contribute to the team's technical direction and roadmap for secure, scalable authentication, including standards for style, maintainability, and best practices.
• Represent GitLab and its values through participation in public communication, broader initiatives, and contributions to relevant open source projects.

• Strong experience building high-performance backend services in Go, ideally in large-scale, distributed environments.
• Hands-on experience with proxy and edge technologies such as Envoy, Traefik, HAProxy, or nginx, including configuration and operation in production.
• Practical experience with service mesh architectures, mutual TLS (mTLS), zero-trust networking, and secure service-to-service communication patterns (gRPC, REST).
• Working knowledge of database and storage technologies such as RDS, Google Spanner, Postgres or similar, including schema design and performance considerations.
• Understanding of token systems (for example JWT or Macaroons), cryptographic signing, and key management for authentication and authorization workflows.
• Experience with Kubernetes, container orchestration, and cloud-native deployment patterns, including observability, monitoring, and debugging of distributed systems.
• Ability to own projects from concept to production, including proposing designs, driving discussions, and delivering in a highly agile, iterative environment.
• Effective written and verbal communication in English, with a collaborative, solution-oriented mindset and openness to learning from and supporting team members with diverse backgrounds and transferable skills.

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