Backend Engineer (Ruby), Plan: Spec-Driven Development
Join GitLab's Plan: Spec-Driven Development team to build the intent-to-code loop: agentic workflows that turn stated intent into refined work items, implementation plans, and mergeable code. Core stack is Ruby on Rails, Python, PostgreSQL, and GraphQL, plus LLM APIs and an AI gateway, in an all-remote environment.
- Compensation
- Not disclosed
- Location
- United Kingdom
- Work setup
- Not specified
- Seniority
- Not specified
- Employment
- Full time
- Experience
- Not specified
- Category
- Backend
- Posted
Skills
Must have
- Strong Ruby on Rails experience in a large production codebase
- Production experience with Python
- Experience driving substantial multi-month projects with several engineers and clear user or business outcomes
- Product mindset and experience owning features end to end, including scope shaping, trade-offs, and user engagement
- Full stack background with a current backend focus; able to read modern frontend code and design effective APIs
- Strong API design and SQL fundamentals
- Ability to work independently, collaborate across functions and regions, and support others through technical leadership and mentoring
Nice to have
- Experience with GraphQL, PostgreSQL performance at scale, or building and evaluating LLM or agent systems
Full description
Location UK
Job type Full-Time
Posted 20 Oct 2026 (1 day ago)
Region Remote
Category Software Engineering
Source Jobicy
Work mode Remote
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 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.
You'll join a small, distributed team working on one of GitLab's highest-visibility product bets, collaborating with design partners toward a public beta. In your first year, you'll lead major features from an unclear problem through release, help shape scope with product and users, mentor other engineers, and influence technical decisions across agent workflows and evaluation methods.
What you’ll do
- Lead backend features from early product discussions through technical design, implementation, rollout, and post-launch learning.
- Build the flows, application programming interfaces, and data models behind agent-generated work items, implementation plans, durable specifications, and mergeable code.