Machine Learning Research Scientist / Research Engineer, Post-Training jobs in United States
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Scale AI · 4 months ago

Machine Learning Research Scientist / Research Engineer, Post-Training

positionSan Francisco, CA
timeFull-time
remoteOnsite
seniorityMid Level
money$220K/yr - $325K/yr

ScaleAI is a company focused on accelerating progress in GenAI research by collaborating with leading AI labs. They are seeking a Machine Learning Research Scientist / Research Engineer to optimize data curation and evaluation for enhancing LLM capabilities, while developing novel post-training techniques and collaborating with top foundation model labs.

AI InfrastructureArtificial Intelligence (AI)Data Collection and LabelingGenerative AIImage RecognitionMachine Learning
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H1B Sponsor Likelynote

Responsibilities

Research and develop novel post-training techniques, including SFT, RLHF, and reward modeling, to enhance LLM core capabilities in both text and multimodal modalities
Design and experiment new approaches to preference optimization
Analyze model behavior, identify weaknesses, and propose solutions for bias mitigation and model robustness
Publish research findings in top-tier AI conferences

Qualification

Post-training techniquesDeep learningReinforcement learningLarge-scale model fine-tuningPreference optimizationPublished researchCustomer facing experienceCommunication

Required

Ph.D. or Master's degree in Computer Science, Machine Learning, AI, or a related field
Deep understanding of deep learning, reinforcement learning, and large-scale model fine-tuning
Experience with post-training techniques such as RLHF, preference modeling, or instruction tuning
Excellent written and verbal communication skills
Published research in areas of machine learning at major conferences (NeurIPS, ICML, ICLR, ACL, EMNLP, CVPR, etc.) and/or journals

Preferred

Previous experience in a customer facing role

Benefits

Comprehensive health, dental and vision coverage
Retirement benefits
A learning and development stipend
Generous PTO
Commuter stipend

Company

Scale AI

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Scale’s mission is to develop reliable AI systems for the world’s most important decisions.
dateFounded in 2016
location
San Francisco, California, USA
people-size501-1000 employees
web-link
https://scale.com

H1B Sponsorship

Scale 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 (82)
2024 (54)
2023 (29)
2022 (17)
2021 (10)
2020 (10)

Funding

Current Stage
Late Stage
Total Funding
$15.9B
Key Investors
MetaAccelTiger Global Management
2025-06-10Corporate Round· $14.3B
2025-06-04Series Unknown
2024-05-21Series F· $1B

Leadership Team

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Jason Droege
Interim Chief Executive Officer
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Dennis Cinelli
Chief Financial Officer
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Company data provided by crunchbase