Periodic Labs, Menlo Park, CA
We're training frontier models to develop deep scientific knowledge and reasoning for scientific discovery. As a Midtraining Research Engineer, you'll take base models and improve their scientific reasoning: curating and generating data, building evals, and running large-scale training experiments. Your work will also lay the groundwork for our pre-training efforts down the line.
We're an AI and physical sciences company building state-of-the-art models to accelerate breakthroughs across materials, energy, and beyond. Backed by world-class investors and growing rapidly, we operate at the pace the frontier requires. Our team brings deep expertise, genuine ownership, and a drive to push the boundaries of what's scientifically possible.
CognitionSan Francisco
Pay not posted
Posted Aug 6, 2026
Applied ComputeSan Francisco
$200K–$335K / yr
Posted Oct 29, 2025
Thinking Machines LabSan Francisco
$350K–$475K / yr
Posted Sep 21, 2026
CognitionSan Francisco
Pay not posted
Posted Aug 6, 2026
MedraSan Francisco
$170K–$350K / yr
Posted Oct 1, 2026
$200K–$350K / yr
Posted 4 days ago
Source: the Periodic Labs Ashby job board. We last checked this job 10 h ago. We first saw it 8 days ago. A job on a job board does not always mean that the team interviews people now. We found this job board in a public list. We did not yet compare it with the careers page of the company.
Funding records can have errors and can be missing. The company page has the links.
No one has reported an interview at Periodic Labs yet. Did you interview there? Add the questions.
This base pay is above the median for AI research jobs in the Bay Area with no level in the job title.
We compare the middle of each posted range. This is base pay as posted. The group does not include this job.