As a Frontend Engineer, you’ll own the runtime that powers the modern internet. You’ll design and maintain SDKs that process millions of events per day and emit billions of signals to enterprise level platforms enabling data collection that respects user choices while powering the modern ad-tech ecosystem. Every network request, every consent signal, every event flows through the infrastructure you build. If their ever goes down, major platforms you use daily may go down with it. The stakes are high. This is infrastructure at an impossible scale, in the hardest runtime environment imaginable. You’ll tackle performance, privacy, and reliability head-on, building systems that can’t fail and architectures that ripple through Fortune 500 production environments. We operate with deep personal ownership which means that you’ll solve problems from first principles, drive end-to-end solutions, and define the technical direction for client-side data governance at scale. You’ll design SDKs used by thousands of engineers, integrating with the entire web and mobile stack, shaping the backbone of a free and fair internet.