Research Scientist: Pretraining (AI/Robotics)

Location: Boston (Somerville), United States; onsite

Salary: $240K–$350K per year, plus equity

Company

hirify.global builds embodied foundation models for the physical world, combining large-scale AI and robotics to enable robots to intelligently interact with their environments.

What you will do

• Design and execute large-scale pretraining runs for robot foundation models using transformer- and diffusion-based architectures.
• Define model architectures, objectives, and training curricula across vision, action, state, and language data.
• Develop scalable data mixtures and sampling strategies for petabyte-scale datasets.
• Guide data collection toward new directions and source new datasets.
• Run ablations on scaling laws, data quality effects, and architecture tradeoffs.
• Collaborate with ML Infrastructure and Systems teams to improve cluster utilization, throughput, and reliability, turning raw robotic interaction data into generalizable capabilities.

Requirements

• Senior or staff-level experience, described as L6+.
• Deep experience training large transformer or diffusion models at scale, including generative language, audio, video, multimodal, or related models.
• Experience leading or significantly contributing to multi-node, multi-GPU distributed training.
• Experience with scaling laws, optimization dynamics, and large-model failure modes.
• Strong PyTorch fundamentals and the ability to debug across every layer of the stack.
• Commitment to empirical rigor and rapid iteration.
• Interest in building general-purpose robot intelligence from first principles.

Culture & Benefits

• Full-time onsite work in Boston (Somerville).
• Work alongside researchers, roboticists, and company builders with experience from frontier AI, robotics, and autonomous-driving organizations.
• Compensation includes equity in addition to the stated salary.
• Equal opportunity employment with no discrimination based on legally protected characteristics.