Senior Backend Engineer (C), Tenant Scale: Git

What you’ll do

• Participate in architectural discussions and technical decisions related to Git and Gitaly, helping drive implementation choices that improve correctness, performance, and maintainability.
• Contribute features, bug fixes, and performance improvements to upstream Git in line with team and community goals, delivering changes that improve repository access and reliability for users.
• Adapt Gitaly to make effective use of Git capabilities, including integrating newly available features to improve scalability, efficiency, and long-term maintainability.
• Connect discussions in the open source Git project with GitLab's product direction and engineering work, helping align upstream contributions with product and platform needs.
• Scope tasks, estimate effort, and describe implementation plans that support the team's priorities and enable predictable delivery of technical work.
• Test and validate the features you build and integrate, with a focus on correctness and reliability to reduce regressions and support stable production use.
• Collaborate with team members, contributors and the Git ecosystem
• Represent GitLab as a constructive participant in the open source ecosystem, building productive relationships that support ongoing collaboration with the Git community.

What you’ll bring

• Experience building instrumented, observable software systems.
• Knowledge of Git internals, including its code and data structures, or practical experience operating Git servers.
• Experience writing and testing production-quality code in C.
• Experience contributing to open source projects, including Git or similar systems, and working effectively in public collaboration spaces.
• Familiarity with Go for backend development and understanding of Linux internals such as processes, memory management, input/output, and filesystems.
• Interest or experience in large-scale or distributed systems, storage formats, graph theory, or highly available production environments, including transferable backend or infrastructure experience.