Senior Backend Engineer on the Auth Infrastructure team at GitLab, focusing on building and maintaining the critical infrastructure layer for authentication and authorization across various GitLab environments. The role involves designing and implementing components like Envoy proxy configuration, token services, bi-directional gRPC tunnels, mTLS, and service mesh architecture, while also ensuring robust observability and debugging for distributed auth systems. The engineer will contribute to a zero-trust architecture and microservices-based future, optimizing performance and reliability at a global scale.