Senior Fullstack Developer

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 Developer based in Canada. This role is a front-end-leaning full-stack engineering position focused on building high-performance, scalable digital applications. You’ll work end-to-end across modern user interfaces, APIs, services, and data layers, with a strong emphasis on React, Next.js, and TypeScript. Reporting to the Technical Director, you’ll contribute to architecture and technical direction while remaining hands-on in development. You’ll collaborate directly with clients, product managers, designers, and engineers to turn complex requirements into polished solutions. The role also provides opportunities to mentor other developers and influence modern engineering practices. It’s well suited to a technically strong engineer who enjoys solving challenging problems in a fast-paced, client-facing digital agency environment.