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

Hiring organization: [CharacterAI](https://career.thegoodapps.co/organizations/characterai)

Canonical page: https://career.thegoodapps.co/jobs/06ba58d5-db7f-4ad0-b41a-2e93911d56ad

Listed on CharacterAI's own careers site. Applications go to them directly.

- Seniority: Senior
- Location: Redwood City, CA
- Remote: yes
- Salary: 150000 – 300000 USD per year

## Summary

This role focuses on building scalable backend systems and applying machine learning to detect and prevent safety risks on an AI platform where users interact with characters. It suits engineers with deep expertise in distributed systems and ML who want to lead technical strategy on emerging AI safety challenges.

_Our summary, not CharacterAI's wording._

## Skills named

A/B Testing, Anomaly Detection, C++, Feature Engineering, Go, Java, Machine Learning, Model Deployment, Model Training, Python

## Required

- 8+ years of professional software engineering experience
- Bachelor's, Master's, or PhD in Computer Science, Engineering, or related technical field
- Proven track record designing and operating large-scale distributed systems
- Expertise in Python, Go, Java, or C++
- Hands-on experience applying machine learning to integrity, trust, or safety challenges
- Understanding of machine learning lifecycle including data preparation, feature engineering, model training, validation, A/B testing, deployment, and monitoring
- Strong problem-solving abilities
- Ability to work in fast-paced environment and deliver results
- Strong communication and leadership skills

## Nice to have

- Experience in a dedicated Trust & Safety, Integrity, or Risk engineering team
- Open-source contributions or publications in relevant fields
- Experience leading large cross-cutting technical projects
- Deep commitment to Trust & Safety as a business value

Apply on CharacterAI's site: https://jobs.ashbyhq.com/character/690f5ec2-2d7b-4c28-9b4d-d710e7225851/application