Machine Learning Infrastructure Engineer
Character.AI
Machine Learning Infrastructure Engineer at Character.AI is a full time role based in Remote · Redwood City, California, United States (remote). The listing states pay of $150k–$350k. It was published on 24 April 2025 and was open at last check.
| Role | Machine Learning Infrastructure Engineer |
|---|---|
| Company | Character.AI |
| Location | Remote · Redwood City, California, United States (remote) |
| Employment type | Full Time |
| Pay (as listed) | $150k–$350k |
| Published | 24 April 2025 |
| Status | Open at last check |
About the role
We’re looking for seasoned ML Infrastructure engineers with experience designing, building and maintaining training and serving infrastructure for ML research.
Responsibilities:
- Provide infrastructure support to our ML research and product
- Build tooling to diagnose cluster issues and hardware failures
- Monitor deployments, manage experiments, and generally support our research
- Maximize GPU allocation and utilization for both serving and training
Requirements:
- 4+ years of experience supporting the infrastructure within an ML environment
- Experience in developing tools used to diagnose ML infrastructure problems and failures
- Experience with cloud platforms (e.g., Compute Engine, Kubernetes, Cloud Storage)
- Experience working with GPUs
Nice to have
- Experience with large GPU clusters and high-performance computing/networking
- Experience with supporting large language model training
- Experience with ML frameworks like Pytorch/TensorFlow/JAX
- Experience with GPU kernel development
About Character.AI
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.
Create your free OnJob profile to apply — we'll take you to Character.AI's application after sign-up. · Posted 24 Apr 2025.
Machine Learning Infrastructure Engineer at Character.AI — questions answered
What does the Machine Learning Infrastructure Engineer role at Character.AI pay?
The Machine Learning Infrastructure Engineer at Character.AI listing states pay of $150k–$350k for the Remote · Redwood City, California, United States (remote) position. That figure is taken directly from the employer's own posting as published, not estimated or averaged from other roles.
Is the Machine Learning Infrastructure Engineer role at Character.AI remote?
Yes — Character.AI advertises this Machine Learning Infrastructure Engineer role as remote, tied to Remote · Redwood City, California, United States, and it is listed as full time work. Remote terms come from the employer's own posting, so confirm the expected working hours, timezone and any on-site days with Character.AI before you apply.
Is the Machine Learning Infrastructure Engineer role at Character.AI still open?
The Machine Learning Infrastructure Engineer posting at Character.AI was open at OnJob's last check of the employer's careers page, having been published on 24 April 2025. OnJob re-checks source listings on each build and marks a role closed once it disappears, but listings can close without notice, so the employer's own page is the final word.
How do you apply for the Machine Learning Infrastructure Engineer role at Character.AI?
Apply to the Machine Learning Infrastructure Engineer at Character.AI role through OnJob with a free profile: OnJob scores your fit against the listing, shows the skills lowering that score, and submits an ATS-ready profile to Character.AI's own application page. Creating a profile is free and needs no card.
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