Senior Frontend Engineer, React/Typescript

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Frontend Engineer, React/TypeScript based in Canada. This role offers the opportunity to build and own scalable, consumer-facing web experiences within a remote-first engineering environment. You will develop new and existing products using React and TypeScript while taking ownership of major areas of the frontend codebase. The position combines hands-on engineering with architectural decision-making and long-term maintenance of critical components. You will work closely with backend engineers, mobile teams, product, and design to deliver polished experiences across devices and browsers. Strong attention to performance, testing, privacy, and usability will be central to your work. You will also contribute to improving frontend architecture and shaping how complex products are built and maintained.