Senior Software Engineer, TypeScript, Duo CLI at GitLab

Role overview

GitLab’s Duo CLI team builds tools that bring GitLab Duo into developers’ terminal workflows. The role works mainly in TypeScript across frontend and backend, with opportunities to contribute to JetBrains and VS Code clients.

Responsibilities

• Design and build AI-assisted terminal experiences and supporting infrastructure for GitLab Duo CLI.
• Make architectural decisions about the CLI’s direction while maintaining code quality, performance and reliability.
• Develop shared client components and integrations across TypeScript, Kotlin and the Duo Client SDK when needed.
• Break down complex problems, align technical direction and provide engineering leadership through design and code review.
• Collaborate with Developer Clients and AI Clients engineers to ship secure, testable features.
• Improve observability, testing, documentation and production support for developer-facing AI workflows.

Qualifications

• Strong professional software-engineering experience building TypeScript applications or services.
• Experience designing developer tools, command-line interfaces, APIs or cross-platform client experiences.
• Ability to reason about AI-assisted workflows, reliability, security, performance and user experience.
• Experience with frontend and backend TypeScript; Kotlin, VS Code extensions or JetBrains plugins are useful.
• Ability to lead technical decisions and work asynchronously with a globally distributed team.
• Strong written communication and commitment to maintainable, well-tested code.

Technology in this role

• TypeScript: The role works mainly in TypeScript across frontend and backend, with opportunities to contribute to JetBrains and VS Code .
• Kotlin: Develop shared client components and integrations across TypeScript, Kotlin and the Duo Client SDK when .
• CAN: Our Talent Acquisition team can help answer any questions about location after starting the recruiting .

Role-specific candidate guide

Preparation notes based on the employer’s stated responsibilities and qualifications.

Understanding the scope. This Senior Software Engineer (Typescript), AI Clients: Duo CLI position at GitLab is best assessed through the work described in the employer’s posting, rather than the title alone. The available role overview says: “GitLab’s Duo CLI team builds tools that bring GitLab Duo into developers’ terminal workflows. The role works mainly in TypeScript across frontend and backend, with opportunities to contribute to JetBrains and VS Code…” Read that statement together with the responsibilities below to understand the likely balance between delivery, coordination and technical decision-making. The role belongs to the AI and data area, but that label is only a guide to the work; the employer’s own requirements remain decisive. Before applying, check the original listing for reporting lines, product or team assignment, employment terms and any details that may have changed since this copy was checked. Where this page says a fact is not specified, treat it as an open question rather than an implied promise.

What the responsibilities signal. The posting specifically names “Design and build AI-assisted terminal experiences and supporting infrastructure for GitLab Duo CLI.”; “Make architectural decisions about the CLI’s direction while maintaining code quality, performance and reliability.”; “Develop shared client components and integrations across TypeScript, Kotlin and the Duo Client SDK when needed.”. For each duty, identify a project where you performed comparable work and be ready to describe the context, your own contribution, constraints, decisions, and measurable result. Explain how you moved from the initial need to implementation, review, release or operational follow-through, where those stages apply. If the work involved other teams or users, distinguish your decisions from the group’s contribution. Avoid presenting a technology keyword as proof by itself: connect it to the problem you solved, the scale or complexity involved, and what changed after your work. The source may contain additional duties; review it directly before preparing your application.

How to read the requirements. The listed qualifications include “Strong professional software-engineering experience building TypeScript applications or services.”; “Experience designing developer tools, command-line interfaces, APIs or cross-platform client experiences.”; “Ability to reason about AI-assisted workflows, reliability, security, performance and user experience.”. Mark each requirement as demonstrated, adjacent experience or a genuine gap, then use a concise example for the first two categories. A strong example explains what you personally owned, how you made trade-offs, how you validated the result and what you learned. If the posting specifies years of experience, language ability, certifications, location or eligibility, address those facts plainly in your CV or application rather than relying on the employer to infer them. Do not claim a qualification from exposure alone. For a requirement you do not meet, describe relevant transferable experience accurately and ask the recruiter whether it is mandatory.

Technology and working evidence. The technology terms associated with this listing are TypeScript. Treat this as a set of posting-derived signals, not a guarantee that every tool is used daily or that the list is complete. For each term relevant to your experience, prepare one concrete example: the system or workflow, the part you owned, the alternatives considered, and how you tested reliability, security, performance or usability as appropriate. If you have not used a named tool, explain the closest related system you have worked with and how you would ramp up; do not relabel that experience as direct production use. If the source describes technologies.

Benefits

• Equity Compensation & Employee Stock Purchase Plan

About GitLab

GitLab is a remote-first DevSecOps platform company. The AI Clients stage builds developer-facing clients and experiences for GitLab Duo.

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