As a Fullstack Engineer on the Duo Client SDK team at GitLab, you’ll build the shared foundation for every GitLab Duo client

Today, the logic that powers Duo in editors lives inside the GitLab Language Server. We’re extracting it into a true software development kit (SDK): a set of well-versioned TypeScript packages that editor extensions, our web-based Duo Chat on GitLab.com, and eventually external applications can use

You’ll work in TypeScript across frontend and backend systems. You’ll design the SDK’s Node.js core and public application programming interface (API), and work in the clients that use it The work rewards care about interfaces, versioning, and backward compatibility as much as features because other engineers will depend on what you build

You’ll have senior and staff engineers alongside you to help with design. You’ll own the implementation of scoped packages and ship improvements with minimal guidance while collaborating with the team on larger architectural changes

Develop secure, well-tested, and performant TypeScript features that solve technical problems of moderate scope and complexity

Ship small features and improvements with minimal guidance, writing tests with every merge request and contributing to code reviews and design discussions

Extract and publish TypeScript packages from the GitLab Language Server, migrating consumers incrementally so no parallel implementation is left to drift

Design durable public APIs with clear interfaces, semantic versioning, changelogs, and deprecation paths for external consumers





Build isomorphic core packages that isolate platform-specific behavior in adapters at the edges

Build and improve SDK client surfaces, including Vue 3 components in Duo Chat on the web, in collaboration with product, design, and engineering teams

Strengthen credential handling across hosts, including bearer tokens, session cookies, and CSRF protection

Optimize bundle size, startup cost, and dependency weight for browser consumers, and support a Tier 2 on-call rotation for urgent engineering issues

Some examples of our projects:

The Duo Client SDK, extracting versioned, publishable packages from the GitLab Language Server The GitLab Language Server, rebuilt on top of the SDK as our polyglot surface

Duo Chat on the web, as one of the SDK’s first consumers The Duo Client SDK team sits in GitLab’s AI Clients stage and works closely with teams building GitLab Duo experiences

We collaborate across client surfaces to make thoughtful technical decisions as the platform evolves. We work fully remotely and asynchronously across regions, in the open, following GitLab’s values of transparency and open communication

Benefits We offer benefits to manage your health, wealth, and well-being regardless of location





Flexibility in schedule to be there for life’s important moments

Equity compensation & Employee Stock Purchase Plan offered

Generous Paid Time Off

Experience with modern build and packaging tools, including monorepos, multi-module builds, ECMAScript modules (ESM), and dependency management A security-minded development approach, including careful credential handling and performance optimization

Experience with Vue 3 and the Composition API, or comparable component-based frontend experience and a willingness to learn Vue

Self-motivation, robust organizational skills, and the judgment to ask for help when needed while thriving in a fully remote organization aligned with GitLab’s values

Ability to communicate clearly and concisely in writing about technical problems, propose iterative solutions, and work effectively in an agile environment

Strong proficiency with TypeScript across frontend and backend systems, including experience building and maintaining Node.js services

Experience designing APIs that other people use, with the ability to explain what you’d do differently

Understanding of the differences between running code in Node.js and in the browser, and how to write code that works in both

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.

📌 Full Stack Engineer (AI Engineering: Duo Client SDK, TypeScript) (Canada)
🏢 GitLab
📍 Canada