# Software Engineer, Backend/Applied ML (Safety & Integrity) at Character.AI

- Company: Character.AI
- What the company does: Backed by Lightspeed and a16z.
- Company website: https://character.ai/
- Type: Startups (AI role)
- Level: Mid level
- Location: Redwood City, CA
- Work setup: Remote
- Pay: $150K to $300K base salary per year (USD)
- Posted: 2026-01-07
- Apply by: 2026-10-08
- Apply: https://jobs.ashbyhq.com/character/690f5ec2-2d7b-4c28-9b4d-d710e7225851
- Page: https://www.1752.vc/careers/jobs/character-ai-software-engineer-backend-applied-ml-safety-and-integrity/

## 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 integrity and safety challenges.

## What they're looking for

- 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
- Proven track record of designing, building, and operating complex, large-scale, and highly available distributed systems
- Expertise in one or more backend programming languages such as Python, Go, Java, or C++
- Hands-on experience in applying machine learning techniques to solve real-world problems, specifically with demonstrable experience in addressing integrity, trust, or safety challenges
- Solid understanding of the machine learning lifecycle, including data gathering and cleaning, feature engineering, model selection, training, validation, A/B testing, deployment, and operational monitoring

Tags: Technical Staff - Engineering