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Backend Engineer (Ruby), Plan: Spec-Driven Development

Remote, United KingdomFull-timeMid-levelRemote

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Classified 11/14/2026
Sponsorship Not Disclosed

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Role Overview

<div class="content-intro"><p>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.</p> <p>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&nbsp;and continuous knowledge exchange, enabling our team members to reach their full potential while collaborating with industry leaders to solve complex problems. <a href="https://www.youtube.com/watch?v=OuZIb5zszQI">Co-create the future with us</a> as we build technology that transforms how the world develops software.</p> <p>*<em>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.</em></p></div><h2><strong>An overview of this role</strong></h2> <p>As a Backend Engineer on the Plan: Spec-Driven Development team, you'll help build GitLab's intent-to-code loop: agentic workflows that turn a stated intent into a refined work item, an implementation plan, and verified, mergeable code. You'll own early-stage backend work across the flows, application programming interfaces, data models, and evaluation systems behind this experience, using Ruby on Rails, Python, PostgreSQL, GitLab Duo Agent Platform, large language model application programming interfaces, and an artificial intelligence gateway.</p> <p>You'll join a small, distributed team working on one of GitLab's highest-visibility product bets, collabo

Responsibilities

<h2><strong>What you’ll do</strong></h2> <ul> <li>Lead backend features from early product discussions through technical design, implementation, rollout, and post-launch learning.</li> <li>Build the flows, application programming interfaces, and data models behind agent-generated work items, implementation plans, durable specifications, and mergeable code.</li> <li>Develop evaluation and benchmarking systems that measure workflow quality, token cost, and success rate.</li> <li>Use Ruby on Rails and Python to build reliable production systems, with PostgreSQL, GraphQL, representational state transfer, GitLab Duo Agent Platform, large language model application programming interfaces, and an artificial intelligence gateway.</li> <li>Collaborate directly with product, design, engineers, design partners, and users to shape scope and make practical trade-offs.</li> <li>Coordinate multi-person projects across the team and communicate decisions clearly in GitLab's asynchronous, all-remote environment.</li> <li>Mentor other engineers and contribute to technical direction across the Plan group and related artificial intelligence initiatives.</li> <li>Work in short iterations, share progress through demos, and use results and user feedback to guide what comes next.</li> <li><span data-sheets-root="1">Take part in on-call or operational support where your team’s ownership model requires it.</span></li> </ul> <h2><strong>What you’ll bring</strong></h2> <ul> <li>Strong Ruby on Rails exper

Qualifications

<p>We welcome candidates with different backgrounds and transferable experience. If you're excited about the role but don't meet every qualification, we encourage you to apply.</p> <h2><strong>About the team</strong></h2> <p>We are a team of four engineers, with two backend and two frontend engineers across Canada and Europe. You'll work in an all-remote, async-first environment with weekly sync calls, retrospectives, demos, and short iterations. This is early-stage work with broad ownership, space for creativity, and a fast pace. For more about our team and its work, see<a href="https://handbook.gitlab.com/handbook/engineering/devops/plan/"> Plan Team Handbook Page</a> and<a href="https://handbook.gitlab.com/handbook/engineering/devops/plan/project-management/"> Spec-Driven Development Initiative</a></p> <p><br><br></p><div class="content-conclusion"><h4><strong>How GitLab Supports Full-Time Employees</strong></h4> <ul> <li><a href="https://about.gitlab.com/handbook/total-rewards/benefits/general-and-entity-benefits/">Benefits to support your health, finances, and well-being</a></li> <li><a href="https://handbook.gitlab.com/handbook/people-group/time-off-and-absence/time-off-types/#flexible-paid-time-off-pto">Flexible Paid Time Off&nbsp;</a></li> <li><a href="https://handbook.gitlab.com/handbook/company/culture/inclusion/tmrg-tmag/">Team Member Resource Groups</a></li>

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