Software Engineer, Backend/Applied ML (Safety & Integrity)

Character·Redwood City, CA·Remote·Posted 7 January 2026

Apply with a tailored CV View on Character's site

About the role

ABOUT THE ROLE We’re looking for a talented and creative Software Engineer to join our Safety Engineering team at Character.AI http://Character.AI! In this role, you will be at the forefront of designing, developing, and scaling robust backend systems and leveraging applied machine learning to tackle critical integrity and safety challenges. You will be architecting and implementing innovative solutions in a key role in addressing the unique safety challenges that come with human-to-AI interaction—bringing your technical expertise to the table as we define industry best practices in this emerging space. This is a high-impact role where you will provide technical leadership, drive innovation, and contribute to the core of our platform's trustworthiness. WHAT YOU'LL DO - Architect & Build: Design, develop, and maintain highly scalable, resilient, and performant backend systems that power our integrity and safety features. - Lead Complex Solutions: Lead the technical design and implementation of sophisticated backend solutions for detecting, preventing, and mitigating a wide array of integrity risks. This includes traditional issues (e.g., content classification, spam, etc.)…

This is a summary of the advert. The full description and the application are on Character's careers site.

Apply faster with Prepper

A version of your CV tailored to this Software Engineer, Backend/Applied ML (Safety & Integrity) role.
A cover letter written from your CV and this advert.
Prepper can fill in Character's application form and send it once you approve.
The application saved in your tracker, with reminders to follow up.

Start free

More roles at Character

Prepper is independent and not affiliated with Character. Roles are listed from the employer's public careers system and removed when they close.