Staff ML Researcher — Open-Foundations & Scaling

Reflection AI Ltd; New York (NY); On-site; USD 140,000 - 220,000; Full time

Benefits offered by this job

Top-tier pay

Stock options

Health insurance

Meals included

Parental leave

Unlimited vacation

Visa sponsorship

Team events

Job summary

Reflection AI Ltd seeks a research-oriented ML engineer to design and scale models, optimize data pipelines, and advance open AI technologies. You will work across algorithms, scaling laws, and model architectures, collaborating with engineers to push the frontier of language models.

The role requires a MS/PhD in CS/ML or related field, strong Python and PyTorch skills, and experience with large-scale data processing in a fast-paced startup environment.

Qualifications

• MS or PhD in Computer Science, ML, or related field.
• Strong software engineering with experience building large-scale systems.
• Experience with large-scale ETL workflows and data prep.
• Deep knowledge of ML, language models, distributed training, and scaling.
• Proficient in Python; PyTorch experience preferred.
• Navigate trade-offs between research objectives and practical engineering realities.
• Thrive in a fast-paced startup with bias toward action.
• Strong communication and collaboration skills.
• Passionate about advancing the frontier of intelligence.

Responsibilities

• Research and build solutions across algorithms, scaling laws, data processing, optimizers, and model architecture.
• Design and run scientific experiments to advance understanding of scaling large language models and data efficiency.
• Implement state-of-the-art methods from the deep learning literature.
• Lead small research projects independently while collaborating on larger initiatives
• Optimize the training infrastructure for efficient scaling.
• Contribute across the entire stack, from low-level optimizations to high-level model design.

Skills

Python

Large-scale systems

ETL workflows

Research mindset

Communication

Fast-paced startup

Education

MS/PhD in Computer Science, ML or related

Tools

PyTorch

Job description

Reflection AI Ltd seeks a research-oriented ML engineer to design and scale models, optimize data pipelines, and advance open AI technologies. You will work across algorithms, scaling laws, and model architectures, collaborating with engineers to push the frontier of language models.

The role requires a MS/PhD in CS/ML or related field, strong Python and PyTorch skills, and experience with large-scale data processing in a fast-paced startup environment.