PrincipleSoftwareEngineer-Ads

About the Team DoorDash Ads has become one of the fastest growing parts of DoorDash and a core pillar of the company's growth. Our Ads platform serves two core customer groups, Restaurant and CPG advertisers, and is rapidly expanding from enterprise into mid-market and SMB. The business is scaling fast, and we're building the infrastructure to match it. We are evolving from a first-generation platform into a sophisticated, full-funnel advertising system. The architectural decisions made now will define how DoorDash Ads scales across restaurants, retail, and grocery for the next decade. About the Role As a Principal Engineer on Ads, you will serve as the technical leader for the Ads platform organization, setting architectural direction and driving the long term technical strategy for the systems that power our entire advertising business. This is an individual contributor role with organization-wide technical authority and director level scope. You will define what we build, how we build it, and the engineering culture that outlasts any single project. You will partner closely with Machine Learning, Product, Data Science, and Infrastructure stakeholders to align on roadmap, scale foundational systems, and deliver high-impact outcomes that improve advertiser ROI, platform reliability, and consumer experience. You're excited about this opportunity because you will… Lead at scale. Serve as the technical lead for the Ads organization, providing architectural vision and direction across the full ads stack. Influence across the organization. Drive alignment across ML, Infrastructure, Product, Data Science, and partner engineering teams. Mentor engineers across the Ads org to raise the bar on technical excellence and systems thinking. Shape engineering culture. Define the patterns, principles, and standards for how the Ads org designs, ships, and operates large scale distributed systems. Solve genuinely hard problems, hands on. Dig into the most complex distributed systems