Intermediate Backend Engineer, GitLab

• Full-stack development experience: Proven ability to work across the stack, with experience distributed approximately across JavaScript (30%), Ruby (50%), and Python (20%). Comfortable working with both frontend and backend components in a mature codebase
• JavaScript skills: Experience with modern JavaScript (and ideally a framework like Vue.js), particularly in the context of full-stack development
• Strong Ruby and Python skills: Experience building and maintaining production applications using Ruby on Rails and Python, including work with background jobs, APIs, and data models
• API development: Experience designing or extending REST and/or GraphQL APIs with attention to scalability, maintainability, and backward compatibility
• LLM prompting and integrations: Hands-on experience with prompt engineering, integrating LLMs into applications, and building features powered by generative AI
• SQL and data layer expertise: Strong command of writing efficient queries and working with relational databases such as PostgreSQL
• Performance-minded: Skilled at identifying and resolving performance bottlenecks at both application and infrastructure levels
• Additionally, studies have shown that people from underrepresented groups are less likely to apply to a job unless they meet every single qualification
• If you're excited about this role, please apply and allow our recruiters to assess your application

Desirable

• The Custom Models team is responsible for Duo Self-Hosted, a key component in GitLab AI that allows customers to run GitLab Duo features in completely private environments, connecting GitLab to their own AI models
• The team works collaboratively with numerous teams to ensure a complete lifecycle of features that implement controls for customization and guarantee a smooth experience for our largest customers
• In the near future, the team will return to evaluating LLM models and advancing AI capabilities
• Contribute to our features using JavaScript (30%), Ruby on Rails (50%), and Python (20%), working with both frontend and backend components in a mature codebase
• Collaborate closely with backend, frontend, product, and UX teammates across time zones in an async-first environment
• Write maintainable, well-tested code and participate in code reviews that help you and your team grow
• Maintain and improve the quality and stability of our applications by contributing to bug fixes and QA
• Resolve production issues, supporting customers and resolve production issues, and learning along the way
• Operate in an agile and fast-paced environment, adapt to shifting priorities and project types, and focus on outcomes
• Take ownership of projects from proposal to production, collaborating across teams to deliver end-to-end solutions
• This isn't just a job; it's your chance to shape the future of AI at GitLab. You will be working on one of the most impactful products at GitLab
• We operate asynchronously, with a strong environment of support, ownership, and collective success
• You'll gain deep expertise in Ruby, Python, and the GitLab platform while contributing to a core area of the product that directly supports millions of users
• As part of our team, you’ll:
• Work on a widely-used open core product with passionate contributors and users
• Grow in a high-trust environment that values transparency and iteration
• Collaborate closely with Product and UX partners
• Have access to a defined career development framework and opportunities for mentorship and growth
• The Custom Models team consists of GitLab team members from around the globe. Engineers are primarily located across various European countries, with some members in Australia and Canada
• The team works closely with these other teams within the organization:
• AI Framework
• MLOps
• Model Validation
• Duo Chat