Machine Learning Infrastructure Engineer jobs in United States
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Character.AI · 1 week ago

Machine Learning Infrastructure Engineer

positionSan Francisco Bay Area
timeFull-time
remoteOnsite
seniorityMid, Senior Level
date4+ years exp

Character.AI empowers people to connect, learn and tell stories through interactive entertainment. They are looking for seasoned ML Infrastructure engineers to design, build, and maintain training and serving infrastructure for ML research.

AppsArtificial Intelligence (AI)Foundational AIGenerative AIInformation TechnologyMobile AppsSoftware
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H1B Sponsor Likelynote

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

Qualification

ML infrastructure supportCloud platformsGPU experienceTool developmentML frameworks

Required

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

Preferred

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

Company

Character.AI

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Character.ai provides open-ended conversational applications in which users create characters and converse with them.
dateFounded in 2021
location
Menlo Park, California, USA
people-size51-200 employees
web-link
https://character.ai

H1B Sponsorship

Character.AI has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (9)
2024 (16)
2023 (6)
2022 (1)

Funding

Current Stage
Growth Stage
Total Funding
$150.08M
Key Investors
Andreessen Horowitz
2023-03-23Series A· $150M
2023-01-24Seed· $0.08M

Leadership Team

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Karandeep Anand
CEO
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Recent News

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Character.AI, Google Agree To Settle Lawsuit Over 14-Year-Old Who Committed Suicide After Developing An Attachment To A Chatbot
2026-01-11
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Star Tribune
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2026-01-11
Company data provided by crunchbase