Scale AI · 13 hours ago
Machine Learning Research Scientist / Engineer, Reasoning
Seattle, WA
Full-time
Onsite
Mid, Senior Level
$252K/yr - $315K/yr
3+ years expScale AI is a leading AI data foundry focused on accelerating the development of AI applications. The role involves advancing reasoning within large language models, shaping data strategy, and collaborating on impactful research and real-world implementations.
AI InfrastructureArtificial Intelligence (AI)Data Collection and LabelingGenerative AIImage RecognitionMachine Learning
Responsibilities
Study the data types critical for advancing LLM-based agents, including browser and software engineering (SWE) agents
Identify the most effective data sources and methodologies for improving LLM reasoning
Contribute to impactful research on language model reasoning
Collaborate with external researchers
Work closely with engineering teams to bring state-of-the-art advancements into scalable, real-world solutions
Qualification
Required
Practical experience working with LLMs, with proficiency in frameworks like PyTorch, JAX, or TensorFlow
Skilled at rapidly interpreting research literature and turning new ideas into working prototypes
A track record of published research in top ML and NLP venues (e.g., ACL, EMNLP, NAACL, NeurIPS, ICML, ICLR, CoLLM, etc.)
At least three years of experience solving complex ML challenges, either in a research setting or product development, particularly in areas related to LLM capabilities and reasoning
Strong written and verbal communication skills, along with the ability to work effectively across teams
Preferred
Hands-on experience fine-tuning open-source LLMs or leading bespoke LLM fine-tuning projects using PyTorch/JAX
Research and practical experience in building applications and evaluations related to LLM-based agents, including tool-use, text-to-SQL, browser agents, coding agents, and GUI agents
Experience with agent frameworks such as OpenHands, Swarm, LangGraph, or similar
Familiarity with advanced agentic reasoning techniques such as STaR and PLANSEARCH
Proficiency in cloud-based ML development, with experience in AWS or GCP environments
Benefits
Comprehensive health, dental and vision coverage
Retirement benefits
A learning and development stipend
Generous PTO
A commuter stipend
Company
Scale AI
Scale’s mission is to develop reliable AI systems for the world’s most important decisions.
501-1000 employees
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 StageTotal Funding
$15.9BKey Investors
MetaAccelTiger Global Management
2025-06-10Corporate Round· $14.3B
2025-06-04Series Unknown
2024-05-21Series F· $1B
Leadership Team
Jason Droege
Interim Chief Executive Officer
Dennis Cinelli
Chief Financial Officer
Recent News
CB Insights
2026-01-09
Crunchbase News
2026-01-07
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