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

United States·Redwood Cityfull-timemid

EngineeringBackend Developer

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Quick Summary

Overview

About the role We’re looking for a talented and creative Software Engineer to join our Safety Engineering team at 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…

Key Responsibilities

Architect & Build: Design, develop, and maintain highly scalable, resilient, and performant backend systems that power our integrity and safety features.

Requirements Summary

8+ years of professional software engineering experience, with a strong emphasis on backend systems development. Bachelor's, Master's, or PhD degree in Computer Science, Engineering, or a related technical field.

Technical Tools

cppgojavapythonab-testingdistributed-systemsmachine-learningmentoringsystem-design

About the Role

~1 min read

We’re looking for a talented and creative Software Engineer to join our Safety Engineering team at 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.

Responsibilities

~1 min read

Requirements

~1 min read

You care deeply about Trust & Safety and see it as a value-add to the business
Prior experience in a dedicated Trust & Safety, Integrity, or Risk engineering team.
Contributions to open-source projects or publications in relevant fields.
Experience leading large, cross-cutting technical projects.

Character.AI empowers people to connect, learn and tell stories through interactive entertainment. Over 20 million people visit Character.AI every month, using our technology to supercharge their creativity and imagination. Our platform lets users engage with tens of millions of characters, enjoy unlimited conversations, and embark on infinite adventures.

In just two years, we achieved unicorn status and were honored as Google Play's AI App of the Year—a testament to our innovative technology and visionary approach.

Join us and be a part of establishing this new entertainment paradigm while shaping the future of Consumer AI!

At Character, we value diversity and welcome applicants from all backgrounds. As an equal opportunity employer, we firmly uphold a non-discrimination policy based on race, religion, national origin, gender, sexual orientation, age, veteran status, or disability. Your unique perspectives are vital to our success.