Sr Software Engineer II - Ads Manager (Front End)

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Sr Software Engineer II - Ads Manager (Front End) based in Canada. This role offers the opportunity to shape the frontend technology behind a sophisticated self-service advertising platform used by brands, agencies, and retailers. You will own frontend technical direction while leading large, multi-quarter initiatives across campaign management, creative experiences, reporting, and optimization. Working closely with Product, Design, Backend, and Data Science teams, you will develop scalable interfaces and reusable engineering foundations. You will also drive improvements in architecture, performance, accessibility, observability, security, and developer productivity. The role combines hands-on engineering with technical leadership, cross-functional influence, and mentorship. It is well suited to a senior frontend engineer who enjoys solving complex problems and modernizing large-scale web applications.