Post-Training Research Scientist

Baseten powers mission-critical inference for AI companies including Cursor, Notion, OpenEvidence, Abridge, Clay, Gamma and Writer, uniting applied AI research, flexible infrastructure, and developer tooling. The company recently raised a $1.5B Series F led by Altimeter Capital, Conviction Partners, and Spark Capital.

This role sits at the frontier of Baseten's research agenda, pursuing open problems at the intersection of post-training methodology and performant inference, then collaborating with research engineering to translate findings into production systems. A portion of time is dedicated to foundational research on how models learn, alignment, and architectural efficiency; the remainder addresses concrete problems for Baseten's platform and customers. The team looks for sharp research taste, creative problem selection, and clean experiment design.

• Define and pursue a research agenda spanning foundational and applied work connected to Baseten's platform and customer needs.
• Design and execute rigorous experiments at meaningful scale (multi-node, trillion parameter models).
• Work with customers to translate domain-specific requirements into research problems.
• Publish at top venues (NeurIPS, ICML, ICLR) and establish Baseten's research presence.
• Collaborate with model performance and training infrastructure teams to bridge research and inference production systems.
• Mentor junior researchers and shape the technical direction of the research organization.

• Master's or PhD research depth in machine learning with first-author publications at top venues.
• Ability to move from theory through implementation to empirical results.
• Judgment about problem selection.
• Willingness to operate in a startup environment where most research informs product decisions.
• Background spanning multiple research areas (e.g., interpretability and RL, or systems and training methodology).
• Track record of open-source contributions or community building in ML research.

Base salary of $210K – $285K plus meaningful equity.

• 100% coverage of medical, dental, and vision insurance for employee and dependents.
• Flexible PTO including company-wide Winter Break (offices closed from Christmas Eve to New Year's Day).
• Paid parental leave.
• Fertility and family-building stipend through Carrot.
• Company-facilitated 401(k).

Apply via the Baseten Ashby application link.