Member of Technical Staff - ML Training Systems

Modal
NYC, USA / San Francisco, USA2026-02-25

About the job

We are looking for strong engineers with experience training production machine learning models. If you are interested in contributing to open-source projects and evolving Modal's infrastructure to train the next generation of language models, we'd love to hear from you!

Responsibilities

- Contributing to open-source projects

- Evolving Modal's infrastructure to train the next generation of language models

Qualifications

Minimum

- 5+ years of experience writing high-quality, high-performance code.

- Experience working with torch and high-level training frameworks (Huggingface, verl, slime)

- Experience with ML training optimization (tell us a story about eliminating data loading bottlenecks, overlapping communications with compute, rewriting a trainer to handle off-policy rollouts, etc.)

- Ability to work in-person, in our NYC or San Francisco office.

- Ability to participate in on-call rotation and respond to production incidents.

Preferred

- Familiarity with low-level operating system foundations (Linux kernel, file systems, containers, etc).