Success in the Senior Security Engineer role will be accomplished by delivering on the responsibilities below in alignment with the Values and Principles that define how we work at HackerOne: Design, build, and maintain detection-as-code capabilities across cloud infrastructure, SaaS applications, endpoints, and identity systems, improving coverage and signal quality through Data-Driven Decision Making. As a Senior Security Engineer, you will design and deliver detection and response capabilities that protect a modern, cloud-native environment by writing code, building AI-powered tooling, and automating workflows end-to-end.