Backend Engineer, Knowledge Graph

What you'll do

• Implement and iterate on backend features for the Rust-based Knowledge Graph service.
• Maintain integrations between the Knowledge Graph and GitLab Rails, NATS, and ClickHouse.
• Propose and document system design options for reliable and scalable analytical graph workloads.
• Improve operational maturity by enhancing metrics, logging, alerts, and participating in on-call rotations.
• Use AI-assisted development workflows to drive efficiency while maintaining high code quality.
• Perform code reviews and participate in knowledge-sharing sessions to maintain codebase standards.
• Contribute to Ruby and frontend tasks as needed for Rails integration and UI plumbing.

What we're looking for

• Professional experience building and maintaining backend systems in production environments.
• Proficiency in at least one modern backend language and a strong interest in Rust.
• Exposure to distributed data or analytics systems such as OLAP databases, Kafka, or NATS-style messaging.
• Interest in graph data modeling and query patterns including property graphs and multi-step traversals.
• Practical experience or strong interest in using AI tools in day-to-day development workflows.
• A language-agnostic mindset with the ability to pick up new languages like Ruby, Go, or TypeScript.
• Solid fundamentals in system design and the ability to reason about architectural trade-offs.
• Ability to work independently in a high-ownership, all-remote environment with clear written communication.