Responsibilities

Design, build, and maintain the Go-based Cells control plane backed by Cloud Spanner.
Extend the TypeScript routing layer on Cloudflare Workers to direct requests to the correct cell.
Modify the GitLab Rails application to support globally unique resources, organization context, and cell-local data consistency.
Design APIs and data models with correctness, idempotency, backward compatibility, transactions, and safe rollouts in mind.
Write unit, integration, and end-to-end tests and improve service reliability.
Instrument services with OpenTelemetry, help define SLOs, and participate in on-call and incident response.
Collaborate with product teams on cell-compatible features and review changes for Cells correctness.
Write design documents, architecture decision records, and documentation, and participate in code review.

Requirements

Professional experience building and running backend services in production, including monitoring, debugging, and incident response.
Proficiency in Go or strong experience in another backend language with willingness to use Go daily.
Experience with Ruby on Rails and TypeScript, or willingness to become productive in both.
Experience designing APIs with gRPC or REST and working with relational or distributed databases, including schema design, transactions, and migrations.
Strong understanding of distributed-systems concepts including consistency, idempotency, concurrency, retries, and failure handling.
Knowledge of engineering practices including automated testing, code review, feature flags, and observable, documented code.
Ability to work effectively in distributed, all-remote teams using asynchronous, written-first communication.
Experience with Cloud Spanner, Cloudflare Workers, Kubernetes, multi-tenant or sharded architectures, or GitLab is preferred but not required.