SECTION I · THE BRIEF
Brief #82408Updated 23 AUG 2026REDWOOD CITY, CAAshbySV ANGEL
Employbl Company Profile

Machine Learning Infrastructure Engineer

Character.ai provides open-ended conversational applications in which users create characters and converse with them. The company aims to create dialog agents with a broad range of uses in entertainment, instruction,…

Location
Redwood City, CA
Company size
100–500
Posted
2mo ago
Via
Ashby
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Machine Learning Infrastructure Engineer

Character.ai· Redwood City, CAView company profile


Job title
Machine Learning Infrastructure Engineer
Job location
Redwood City, CA
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 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.

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Where this role is based

Redwood City, CA

Map of this location

Character.ai headquarters

Menlo Park, CA

Company size

100–500 employees

Founded

2021

Total raised

$150,080,000

View company profile ↗

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