# Machine Learning Infrastructure Engineer

**Company:** [Character.AI](https://zerogtalent.com/ai-companies/character-ai)
**Location:** Redwood City, CA
**Work mode:** Hybrid
**Employment type:** Full Time
**Salary:** USD 150K–350K/yr
**Category:** Software
**Department:** Other
**Listed:** 2026-03-11

[View and apply on Zero G Talent](https://zerogtalent.com/ai-jobs/character-ai/machine-learning-infrastructure-engineer-13006848-6a69-4467-9274-5d54e80b965d)

## Job description

### **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](http://Character.AI) empowers people to connect, learn and tell stories through interactive entertainment. Over 20 million people visit [Character.AI](http://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 adventure_s._

  
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._

## Other open roles at Character.AI

- [Technical Program Manager, Product Experience](https://zerogtalent.com/ai-jobs/character-ai/technical-product-manager-product-experience-56dcfddd-ba6d-48a8-81fb-3332abb1c032) — Redwood City, CA
- [Principal Research Engineer, Post-Training](https://zerogtalent.com/ai-jobs/character-ai/principal-research-engineer-post-training-cab23a8b-97ba-4b20-a8e3-f7d9a61e13f4) — Redwood City, CA
- [Technical Program Manager, Model Alignment and Deployment](https://zerogtalent.com/ai-jobs/character-ai/technical-program-manager-model-alignment-and-deployment-091a6ad6-75dd-4dd4-9439-7e1e9d13970b) — Redwood City, CA
- [Staff Data Scientist, Monetization](https://zerogtalent.com/ai-jobs/character-ai/staff-data-scientist-monetization-df95a7a5-87ca-4f51-85fd-4bb595a47a55) — Redwood City, CA
- [Technical Program Manager, AI Infrastructure](https://zerogtalent.com/ai-jobs/character-ai/technical-program-manager-ai-infrastructure-fd023b84-a746-4fe9-8a9d-277899e67a78) — Redwood City, CA

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*Source: [Zero G Talent](https://zerogtalent.com), the job board for space, defense, AI, robotics and frontier-tech companies.*