Cinder

Cinder builds what it calls an operating system for digital safety: an integrated workflow platform that combines human judgment with AI-powered automation to run trust and safety operations. The system covers content moderation, management of review teams, preparation of regulatory documentation and accountability checks on AI deployments. The company reports that policy enforcement decisions can be made in seconds rather than hours, replacing spreadsheets, ad hoc SQL and disconnected tooling.

Its customer base includes OpenAI, Midjourney, ElevenLabs, BeReal and Depop. The work sits at the intersection of content moderation technology, workflow automation and responsible AI, serving online platforms, generative AI firms and organisations facing regulatory compliance obligations in trust and safety.

Cinder is remote-first, with teammates across the United States and the United Kingdom and Europe; hiring is concentrated on New York City, San Francisco and London. The company describes its core values as relentless, intentional and empathetic, and frames its mission as protecting the internet at scale. It is backed by Accel and Y Combinator.