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San Mateo, United States

Machine Learning Research Scientist

Raydar · San Mateo · United States

Salary
$200,000–$450,000 per year
Contract
Full time
Occupation
Data Scientist

Posted: 10/27/2026 · Last checked: 10/29/2026

Job description

Quoted in full from Raydar's job posting. Gavroche does not edit it.

About the company

Our client is a technology company.

The role

Raydar is recruiting for this role on behalf of our client. Develop research systems that propose, test and refine ideas, then move the most promising ones from prototype into shipped software. The position mixes neural network development, reinforcement learning and close work with engineers.

What you'll do

- Work closely with leadership to develop systems that propose, test and refine ideas.

- Team up with software engineers to turn experimental methods into dependable, shipped software.

- Apply reinforcement learning and post-training to large language models to automate parts of the research workflow.

- Keep up with new developments in AI research and automation.

Requirements

What we're looking for

- MS or PhD in computer science, machine learning, AI or a quantitative field, or equivalent research experience.

- Record of publishing in leading AI venues, or comparable experience at an industry research lab.

- Proficiency developing neural network models with gradient-based and reward-based methods, beyond wrapping hosted LLM APIs.

- Post-training or reinforcement learning work on large language models of 15B+ parameters, agent models or genetic algorithms.

- Strong Python skills, with the ability to ship production code independently.

- Track record applying reward-driven training and fine-tuning to neural models.

- Self-directed, comfortable exploring open research directions with minimal supervision.

Bonus points

- Experience at a frontier AI lab or top AI research team.

- Peer-reviewed papers in well-regarded machine learning venues.

- Background operating large multi-accelerator compute jobs or machine learning pipelines at scale.

- Background or interest in automated scientific research.

- Degree from a top-20 institution.

Benefits

Compensation and benefits

- Salary: $200K - $450K

- Equity

- Flexible time off

Location and work model

- San Mateo, CA, United States

- Hybrid, 4 days in-office

- Full-time

From Gavroche data

Figures computed from live adverts on Gavroche; the job text above is the employer's.

Similar roles in San Mateo

200 open roles like this one; at most three per employer shown.

What data scientist adverts in the United States state

Middle half: 175,000 – 250,000 USD a year; median 209,000 USD.

From 371 adverts by 152 employers that state a salary, annualised.

How data scientist roles in the United States are worked

6% fully remote · 2% hybrid · 92% do not say

Of 167 adverts. An advert that does not state a work mode is counted as not saying, not as on-site.

New openings in San Mateo, by week

  1. 8/3/2026 11
  2. 8/10/2026 6
  3. 8/17/2026 8
  4. 8/24/2026 12
  5. 8/31/2026 17
  6. 9/7/2026 18
  7. 9/14/2026 16
  8. 9/21/2026 17
  9. 9/28/2026 17
  10. 10/5/2026 13
  11. 10/12/2026 36
  12. 10/19/2026 63
  13. 10/26/2026 29

263 openings over 12 weeks, by the week they were published.

Other roles at Raydar

775 open, including roles outside the United States.