GitLab

Senior Backend Engineer, Ruby/Go – Tenant Scale, Cells Infrastructure

GitLab

full-time

Posted on:

Location Type: Remote

Location: Anywhere in North America

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About the role

  • Design and implement edge traffic routing that directs requests to the correct Cell in a way that's transparent to users.
  • Build and evolve the Topology Service that serves as the authoritative source of cluster state for routing, resource assignment, and Cell lifecycle decisions.
  • Collaborate across the GitLab Rails monolith and supporting services to make features and data models Cell-aware with feature teams across the product.
  • Operate and improve the routing and topology systems you build by participating in tier-2 on-call, responding to escalated incidents, and strengthening observability and operational tooling.
  • Author Architecture Decision Records (ADRs), operational runbooks, and documentation so other teams can understand, adopt, and extend the Cells platform.
  • Review merge requests from GitLab team members and community contributors, maintaining high standards for correctness, performance, and security across the stack.

Requirements

  • Experience building observable, resilient production services using Go or Ruby on Rails (TypeScript experience is a plus).
  • Background delivering and operating production systems in high-scale environments, including incident response and operational ownership.
  • Ability to reason about distributed systems, including consistency models, partitioning strategies, failure modes, and operational tradeoffs.
  • Experience building high-throughput networking services (gRPC and protocol buffers knowledge is a plus).
  • Familiarity working in large, multi-team codebases and coordinating changes across teams and services, including making features and data models Cell-aware.
  • Knowledge of observability practices such as metrics, tracing, and alerting, with an approach focused on building systems you'd be confident operating on-call.
  • Strong written communication skills for an async-first, globally distributed team, including documenting decisions (for example, architecture decision records) and runbooks.
  • Experience working with relational databases in production, including schema design, migrations, and query performance tuning (PostgreSQL experience is a plus).
Benefits
  • Benefits to support your health, finances, and well-being
  • Flexible Paid Time Off
  • Team Member Resource Groups
  • Equity Compensation & Employee Stock Purchase Plan
  • Growth and Development Fund
  • Parental leave
  • Home office support
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
GoRuby on RailsTypeScriptgRPCprotocol buffersrelational databasesschema designmigrationsquery performance tuningobservability practices
Soft Skills
strong written communicationcollaborationincident responseoperational ownershipreasoning about distributed systemscoordinating changes across teamsdocumentation skills