Cinder builds safety infrastructure for some of the most important AI and internet platforms in the world, including Midjourney, ElevenLabs, Synthesia and Black Forest Labs. We’re backed by Accel, Y Combinator, and Radical Ventures.
We’re building a network of specialists who test AI models for the ways they can cause real harm. When a customer project calls for your expertise, we bring you in on a paid, project-based contract.
We want to hear from:
Red teamers and jailbreakers with hands-on experience getting frontier models to break
Testers with experience across image, video, and audio generation, or in agentic and MCP-connected systems
Experts in specific domains, including child safety, CBRNE, violent extremism, NCII, cybersecurity, fraud, self-harm, psychology, and copyright
Native speakers who can test models in languages and cultural contexts beyond English
Projects vary in size and timing. Once you’re in the network, we’ll reach out when a project matches your background.
Skills Required
- Hands-on experience red teaming or jailbreaking frontier AI models
- Experience testing image, video, or audio generation systems
- Experience testing agentic or MCP-connected systems
- Expertise in child safety, CBRNE, violent extremism, NCII, cybersecurity, fraud, self-harm, psychology, or copyright
- Native-language expertise for testing models in non-English languages and cultural contexts
What We Do
Cinder is the industry’s first Trust and Safety operations platform to help organizations combat Internet abuse at scale. We provide Trust and Safety teams with a single system to manage complex integrity operations and investigations to create a safe environment for their users.
