Senior Product Designer

ABOUT CINDER Cinder is the mission-critical infrastructure that keeps the world's most important digital platforms true to what they stand for. The internet has always been abused by bad actors, and AI is making it exponentially worse, driving fraud, abuse, and manipulation at a scale and speed no human team can fight alone. Cinder gives platforms one command center to fight back: to write and enforce policy, deploy AI agents against abuse in real time, investigate threats, file NCMEC reports, and prove their safety programs are working. Our customers are some of the largest internet platforms in the world. The decisions made in our software directly determine what stays up, what comes down, and how users are treated. We're a small, fast-moving team backed by Accel and Y Combinator. We care about being intentional, direct, and deeply focused on solving real customer problems. WHY THIS ROLE Cinder's product surface is expanding fast: new agent-facing workflows, multiple product lines, and a growing brand and GTM footprint. We're building out design to match, and we're looking for a second senior designer to own significant surfaces end to end. You'll operate as a co-lead and thought partner with our current designer. You'll take full ownership of your own surfaces, shape design direction and craft standards together, and give each other real, two-way critique. We expect you to get fluent in Cinder fast, so you can operate independently and make your own thoughtful decisions on Cinder design. This is a chance to help define how design works at Cinder from an early stage, not just execute inside an existing structure. WHAT YOU'LL WORK ON - Own end-to-end design for assigned surfaces, from framing the problem to shipped UI, working directly with product and engineering. - Run discovery with product: talk to Trust & Safety customers and users, and turn what you hear into design direction and Linear tickets an engineer can pick up and build from. - Prototype at high fidel