Intermediate Backend Engineer (Ruby), AI Engineering, Custom Models

GitLab

📍 Remote, Americas; Remote, EMEA 💼 Fully Remote 📅 Posted: 2025-11-14 🌟 3/5 Relevance 📊 Source: Greenhouse Gitlab

Job Description

GitLab is an open-core software company that develops the most comprehensive AI-powered DevSecOps Platform, used by more than 100,000 organizations. Our mission is to enable everyone to contribute to and co-create the software that powers our world. When everyone can contribute, consumers become contributors, significantly accelerating human progress. Our platform unites teams and organizations, breaking down barriers and redefining what's possible in software development. Thanks to products like Duo Enterprise and Duo Agent Platform, customers get AI benefits at every stage of the SDLC. 

The same principles built into our products are reflected in how our team works: we embrace AI as a core productivity multiplier, with all team members expected to incorporate AI into their daily workflows to drive efficiency, innovation, and impact. GitLab is where careers accelerate, innovation flourishes, and every voice is valued. Our high-performance culture is driven by our values and continuous knowledge exchange, enabling our team members to reach their full potential while collaborating with industry leaders to solve complex problems. Co-create the future with us as we build technology that transforms how the world develops software.

An Overview of This Role

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.

What You’ll Do  

• 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.

• Col...

Skills & Technologies

Backend EMEA Engineering Frontend Fully Remote Java JavaScript Lead Platform Product
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