USD 189600-237000/yr

ML Research Engineer, ML Systems

United StatesSan Francisco · Seattle · San Francisco · New Yorkmid
Software EngineeringSearch Engineer
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Quick Summary

Overview

Scale’s ML platform (RLXF) team builds our internal distributed framework for large language model training and inference. The platform has been powering MLEs, researchers,

Technical Tools
Software EngineeringSearch Engineer

Scale’s ML platform (RLXF) team builds our internal distributed framework for large language model training and inference. The platform has been powering MLEs, researchers, data scientists and operators for fast and automatic training and evaluation of LLM's, as well as evaluation of data quality.

Scale is uniquely positioned at the heart of the field of AI as an indispensable provider of training and evaluation data and end-to-end solutions for the ML lifecycle. You will work closely across Scale’s ML teams and researchers to build the foundation platform that supports all our ML research and development. You will be building and optimizing the platform to enable our next generation of LLM training, inference and data curation.

If you are excited about shaping the future AI via fundamental innovations, we would love to hear from you!

  • Build, profile and optimize our training and inference framework
  • Collaborate with ML teams to accelerate their research and development and enable them to develop the next generation of models and data curation
  • Research and integrate state-of-the-art technologies to optimize our ML system
  • Strong excitement about system optimization
  • Experience with multi-node LLM training and inference
  • Experience with developing large-scale distributed ML systems
  • Strong software engineering skills, proficient in frameworks and tools such as CUDA, Pytorch, transformers, flash attention, etc. 
  • Strong written and verbal communication skills and the ability to operate in a cross functional team environment

Nice to Have

~1 min read
  • Demonstrated expertise in post-training methods &/or next generation use cases for large language models including instruction tuning, RLHF, tool use, reasoning, agents, and multimodal, etc.

What We Offer

~2 min read

At Scale, our mission is to develop reliable AI systems for the world's most important decisions. Our products provide the high-quality data and full-stack technologies that power the world's leading models, and help enterprises and governments build, deploy, and oversee AI applications that deliver real impact. We work closely with industry leaders like Meta, Cisco, DLA Piper, Mayo Clinic, Time Inc., the Government of Qatar, and U.S. government agencies including the Army and Air Force. We are expanding our team to accelerate the development of AI applications.

We believe that everyone should be able to bring their whole selves to work, which is why we are proud to be an inclusive and equal opportunity workplace. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability status, gender identity or Veteran status. 

We are committed to working with and providing reasonable accommodations to applicants with physical and mental disabilities. If you need assistance and/or a reasonable accommodation in the application or recruiting process due to a disability, please contact us at accommodations@scale.com. Please see the United States Department of Labor's Know Your Rights poster for additional information.

We comply with the United States Department of Labor's Pay Transparency provision

PLEASE NOTE: We collect, retain and use personal data for our professional business purposes, including notifying you of job opportunities that may be of interest and sharing with our affiliates. We limit the personal data we collect to that which we believe is appropriate and necessary to manage applicants’ needs, provide our services, and comply with applicable laws. Any information we collect in connection with your application will be treated in accordance with our internal policies and programs designed to protect personal data. Please see our privacy policy for additional information.

Listing Details

First seen
March 23, 2026
Last seen
April 21, 2026

Posting Health

Days active
29
Repost count
0
Trust Level
42%
Scored at
April 21, 2026

Signal breakdown

freshnesssource trustcontent trustemployer trust
Scale AI
Scale AI
greenhouse
Employees
5
Founded
2025
Domain
scalez.io
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Scale AIML Research Engineer, ML SystemsUSD 189600-237000