Grafton Sciences ยท 2 months ago
Senior LLM Research Scientist
Redwood City
Full-time
Onsite
Senior LevelGrafton Sciences is building AI systems with general physical ability, aiming to push the frontier of physical AI. They are seeking a Senior LLM Research Scientist to develop advanced models for autonomous engineering systems, leading research in various methodologies and collaborating with multiple teams for real-world applications.
Machine LearningRobotics
Responsibilities
Develop models and prompting frameworks for planning, tool use, and long-horizon reasoning
Lead SFT, RLHF/DPO, verifier-driven RL, and MoE routing strategies for robust agent behavior
Design schemas, tool-call policies, safety constraints, and failure-recovery mechanisms for LLM agents
Collaborate with agent systems, data infrastructure, simulation, and tooling teams to train and evaluate models in real workflows
Qualification
Required
Deep experience in LLM research, reasoning models, agent systems, or structured tool-use frameworks
Strong background in SFT, RLHF, DPO, or verifier-driven RL, with a track record of pushing model capabilities
Ability to design and evaluate long-horizon behaviors, decomposition strategies, and structured policy constraints
Comfortable working across ML, systems engineering, and real-world toolchains in a fast-moving research environment
Benefits
Competitive salary
Meaningful equity
Benefits
Company
Grafton Sciences
Building systems of general physical ability to enable superintelligence
Founded in 2024
11-50 employees
H1B Sponsorship
Grafton Sciences 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 (2)
Funding
Current Stage
Early StageCompany data provided by crunchbase