This position is listed on behalf of a partner company, which manages all applications and next steps. Our partner is looking for a Senior Software Engineer – Ads Manager based in Canada. As a Senior Software Engineer, you will help build and scale a self-service advertising platform that enables brands, agencies, and retailers to create, manage, and optimize digital advertising campaigns. You will take ownership of high-impact engineering initiatives that improve advertiser experiences, platform reliability, and revenue growth. Working within a collaborative, cross-functional environment, you will design scalable backend services, robust APIs, and data-driven solutions while contributing to frontend integrations when needed. You will also help advance web observability, define key performance metrics, and explore AI-powered tools for automated advertising review. This role offers significant technical ownership, opportunities to influence architectural decisions, and the chance to mentor engineers while improving software quality. Join a remote-first engineering team where innovation, autonomy, and continuous improvement are central to building products at scale.