Backend Engineer (Ruby), AI Engineering: Duo Agent Platform Tools

Posted An Hour Ago
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2 Locations
Remote
Mid level
Cloud • Security • Software • Cybersecurity • Automation
The intelligent orchestration platform for DevSecOps
The Role
Build, ship, and maintain backend features enabling AI agents to interact with GitLab. Design GraphQL/REST APIs, extend tests (RSpec), work with PostgreSQL, troubleshoot production issues, and collaborate cross-functionally to integrate AI tooling responsibly.
Summary Generated by Built In

GitLab is the intelligent orchestration platform for DevSecOps. GitLab enables organizations to increase developer productivity, improve operational efficiency, reduce security and compliance risk, and accelerate digital transformation. More than 50 million registered users and more than 50% of the Fortune 100* trust GitLab to ship better, more secure software faster.

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.

*Fortune 500® is a registered trademark of Fortune Media IP Limited, used under license. Claim based on GitLab data. Fortune 100 refers to the top 20% ranked companies in the 2025 Fortune 500 list, published in June 2025. Fortune and Fortune Media IP Limited are not affiliated with, and do not endorse products or services of GitLab.

An overview of this role

As an Intermediate Backend Engineer on the GitLab Agent Tools team, you'll go beyond using AI tools and help define how we design, build systems that allow AI agents to interact with the full software delivery lifecycle, way beyond pure code creation.  This encompasses GitLab’s MCP server as well as future technologies that are aimed at providing AI agents ways to interact with GitLab.
In this role you’ll contribute to the development of complex features and help establish architectural patterns for how GitLab exposes its rich functionality to AI agents. You’ll collaborate closely with engineers across the Agent Foundations stage and adjacent teams within AI engineering. This is a high-visibility area of the product at the intersection of GitLab's core platform and its AI strategy.
              

What you'll do
  • Develop, ship, and maintain features and improvements for Agentic Tools across the GitLab monolith backend in a secure, well-tested, and performant way.
  • Collaborate with Product Management, UX, frontend, backend, and AI specialists to refine requirements and deliver high-quality, iterative product enhancements.
  • Design, implement, and review GraphQL, REST APIs and related backend logic, ensuring reliability, scalability, and clear contracts with frontend clients.
  • Improve and extend automated testing, including RSpec and other frameworks, to strengthen quality, reliability, and developer feedback loops.
  • Share standards, patterns, and learnings with other engineers, raising the bar for responsible AI integration and evidence-driven engineering across the team.
  • Participate in Tier 2 on-call rotations to troubleshoot production issues, contribute to root cause analysis, and enhance observability and resiliency
What you'll bring
  • Experience building and maintaining production applications with Ruby on Rails, including work with background jobs, APIs, and data models.
  • Comfortable working across the stack in a mature codebase. Familiarity with Python backends and/or Vue frontends a plus.
  • Proficiency in designing or extending REST and/or GraphQL APIs with attention to scalability, maintainability, and backward compatibility.
  • Strong practical experience working with AI tooling on a daily basis. Experience designing and shipping AI-powered backend features and integrations is a plus
  • SQL skills and familiarity with relational databases such as PostgreSQL, including writing efficient queries and understanding data modeling.
  • Openness to learning, collaborating in an async-first, distributed team, and applying transferable skills from related technologies or domains.
  • Clear written and verbal communication skills, including writing technical proposals and documentation, and collaborating effectively in a remote, asynchronous, cross-functional environment.
About the team

Agent Tools is a new functional team within the Agent Execution group. The team itself will initially consist of three engineers across AMER and EMEA timezones. The whole Agent Execution group consists of 8+ engineers. Beyond the Agent Tools team, Agent Execution consists of further teams focussed on agent observability and executing agents on GitLab’s runners. We’re partnering with teams both within the AI space as well as all over GitLab to ensure that the Duo Agent Platform can become the backbone of many AI features at GitLab. 

How GitLab Supports Full-Time Employees
  • 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 

Please note that we welcome interest from candidates with varying levels of experience; many successful candidates do not meet every single requirement. 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.

Country Hiring Guidelines: GitLab hires new team members in countries around the world. All of our roles are remote, however some roles may carry specific location-based eligibility requirements. Our Talent Acquisition team can help answer any questions about location after starting the recruiting process.  

Privacy Policy: Please review our Recruitment Privacy Policy. Your privacy is important to us.

GitLab is proud to be an equal opportunity workplace and is an affirmative action employer. GitLab’s policies and practices relating to recruitment, employment, career development and advancement, promotion, and retirement are based solely on merit, regardless of race, color, religion, ancestry, sex (including pregnancy, lactation, sexual orientation, gender identity, or gender expression), national origin, age, citizenship, marital status, mental or physical disability, genetic information (including family medical history), discharge status from the military, protected veteran status (which includes disabled veterans, recently separated veterans, active duty wartime or campaign badge veterans, and Armed Forces service medal veterans), or any other basis protected by law. GitLab will not tolerate discrimination or harassment based on any of these characteristics. See also GitLab’s EEO Policy and EEO is the Law. If you have a disability or special need that requires accommodation, please let us know during the recruiting process.

Skills Required

  • Production experience building and maintaining applications with Ruby on Rails (background jobs, APIs, data models)
  • Proficiency designing or extending REST and/or GraphQL APIs
  • Experience improving and extending automated testing, including RSpec
  • SQL skills and familiarity with relational databases such as PostgreSQL
  • Practical experience working with AI tooling and designing/shipping AI-backed backend features or integrations
  • Comfortable working across the stack in a mature codebase
  • Willingness to participate in Tier 2 on-call rotations and troubleshoot production issues
  • Clear written and verbal communication, including writing technical proposals and documentation
  • Familiarity with Python backends and/or Vue frontends

What the Team is Saying

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GitLab Compensation & Benefits Highlights

  • Leave & Time Off Breadth Flexible Paid Time Off is documented with guidance encouraging at least 25 days per year and permitting up to 25 consecutive calendar days. Additional time-away types (e.g., sick time, bereavement, and leaves) are centrally documented for straightforward access.
  • Parental & Family Support Paid parental leave provides 16 weeks for birth or adoption, complemented by return-to-work resources and tools like Parentaly and coordinated leave administration via Tilt in the U.S. Caregiving support such as backup care and tutoring through Vivvi is also available.
  • Healthcare Strength Medical, dental, and vision coverage (Cigna nationwide and Kaiser in some states) are paired with company-paid life and disability insurance and robust mental-health support via Modern Health. A global wellness platform and EAP resources broaden preventive and behavioral health support.

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The Company
San Francisco, CA
2,500 Employees
Year Founded: 2014

What We Do

GitLab is the Intelligent Orchestration Platform where software teams and their AI agents stay in flow to amplify their capacity for innovation. Together, they automate repetitive tasks to plan, build, secure, test, deploy and maintain software. With GitLab, software teams spend less time on coordination overhead and more time on the next big idea. What started in 2011 as an open source project to help one team of programmers collaborate is now the intelligent orchestration platform millions of people use to deliver software faster, more efficiently, while strengthening security and compliance. Since the beginning, we've been firm believers in remote work, open source, DevSecOps, and iteration. We get up and log on in the morning to work alongside the GitLab community to deliver new innovations every month that help teams and their AI agents ship great code faster.

Why Work With Us

GitLab is where careers accelerate, innovation flourishes, and every voice is valued. Co-create the future with us as we build technology that transforms how the world develops software.

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Employees work remotely.

All-remote means that each individual in the organization is empowered to work and live where they are most fulfilled; it makes it clear that every team member is equal. No one, not even the executive team, meets in-person on a daily basis.

Typical time on-site: None
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