Senior UI Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior UI Engineer based in Canada. This is a hands-on frontend engineering role focused on creating the next generation of user experiences for complex web applications.You will design scalable interfaces and reusable component systems that support intuitive, high-performance experiences across desktop and mobile.Working closely with product, design, and backend engineering teams, you will contribute to features throughout the full development lifecycle.The role offers the opportunity to build AI-powered and agent-driven workflows while applying modern engineering practices.You will help shape frontend architecture, improve performance and accessibility, and establish standards that support long-term product quality.The environment encourages rapid iteration, technical collaboration, and the use of AI-assisted development tools to increase engineering effectiveness.As a senior contributor, you will have meaningful influence on both product direction and the evolution of the user experience.