This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Fullstack Engineer based in Canada. This role offers the opportunity to build and scale developer-focused products that improve how teams design, document, and interact with APIs.The successful candidate will work across the full product ecosystem, from backend services and SDK generation to polished frontend experiences.This is a high-ownership engineering position for someone who enjoys turning ideas into production-ready features with significant autonomy.The role combines modern TypeScript development, open-source technologies, AI-powered capabilities, and developer experience innovation.The ideal candidate will bring strong technical judgment, product ownership, and a passion for building high-quality software.Working within a small, collaborative engineering team, this position provides the opportunity to influence architecture, product direction, and engineering culture.