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 is a ground-floor engineering opportunity within an AI-native fintech SaaS environment focused on modern financial planning and analysis.You will work closely with technical leadership to design, build, and own high-impact product capabilities from end to end.The role spans frontend and backend development, giving you meaningful influence across the technology stack and product experience.You will contribute to a growing codebase while helping establish engineering standards, practices, and culture from an early stage.Collaboration is central, with close partnerships across Engineering, Design, Operations, and technical leadership.You will work in a fully remote environment with a strong focus on autonomy, product quality, scalability, and continuous improvement.This role is ideal for an experienced engineer who wants to combine hands-on technical ownership with the opportunity to shape an evolving AI-focused product.