Intermediate/Senior Full-Stack Software Developer - Extensibility

Role Description

We’re looking to hire a Full-Stack Software Developer with excellent technical skills and communication abilities to join our SDK & Extensibility squad.

We sell a platform that customers are supposed to make their own. Extending it shouldn’t require hiring a developer, or having to wait on our roadmap. Your team owns that promise end to end:

• The Platform’s SDK
• Our customizable data model
• The extension marketplace
• The AI assistant that makes it accessible to everybody

You will join a team of 3 Full-Stack Developers (including a Team Lead), one Product Manager, and one Product Designer, dedicated to gaiia’s extensibility surface.

Technically speaking, you will work in a serverless ecosystem of microservices deployed on a cloud infrastructure. gaiia is all-in on Typescript, with frontend, backend, and infrastructure-as-code all leveraging Typescript.

As part of the SDK & Extensibility squad, you will have the chance to work across four connected projects:

• Platform SDK — lets developers build custom automations, UI panels, and integrations on top of gaiia, all indistinguishable from native features.
• Custom Objects — a system that lets tenants define their own object types with custom fields, relationships, and lifecycle.
• Extension Marketplace — opening up to third-party developers and partners building extensions that can be distributed, discovered, and installed across tenants.
• AI-Native Extension Builder — a conversational, AI-powered way to build extensions, embedded directly in the product.

Across all four, you’ll also:

• Keep the extension sandbox safe and reliable.
• Design, develop, and deploy GraphQL APIs consumed by external developers, internal squads, and AI systems alike.
• Collaborate closely with other squads who build on top of your primitives.

Qualifications

• At least five (5) years of experience in the Javascript web ecosystem (Typescript is a big advantage).
• Experience with the React library.
• Experience with Node.js.
• Proven experience building with Coding Agents (Claude Code, Codex, etc.).
• Care for long-term, sustainable architectural decisions.
• Known as a team player with impeccable work ethic.

Requirements

• Experience designing developer-facing APIs, SDKs, or plugin/extension systems.
• Experience with sandboxing, Web Workers, or isolated execution environments.
• Experience with GraphQL.
• Familiarity with the design of AI coding tools or LLM-based code generation.
• Strong intuitions about AI product design — thinking about failure modes, edge cases, and user trust.
• Interest or expertise in functional programming.

Benefits

• Flexible 25 days vacation.
• Stock Options Plan.
• Group Insurance.
• Telemedicine.
• Life and Health Spending Accounts.
• Group Retirement Savings Plan (RRSP).
• Flexible working hours & all-remote work.