Senior Security Engineer: Auth & Data Protection

Collective is hiring a Senior/Staff Product Security Engineer to build authentication, authorization, and data‑protection systems at the heart of our member platform. This is a software engineering role first: you will design and ship the code that governs how our platform authenticates users and services, what they're authorized to do, and how our members' data is protected.

Based in San Francisco with a hybrid work model, you will own end-to-end identity, drive patterns for AI agents, and lead