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Research Engineer - Pre-training Data

Prime Intellect · San Francisco

MakeYouFirst tailors your CV to this job, writes the cover letter, finds the recruiter’s email and sends the application from your own mailbox, once you approve it.

In brief

Prime Intellect is hiring: Research Engineer - Pre-training Data in San Francisco.

Duties

  • Find, evaluate, and collect valuable training data from web, code, and technical sources.
  • Build scalable pipelines that turn raw data into training-ready corpora through extraction, cleaning, deduplication, and filtering.
  • Develop checks for data quality, coverage, and contamination, and use them to improve collection and processing.
  • Work with researchers on data mixtures and sampling strategies for pre-training and midtraining.
  • Prepare and evaluate data for long-context learning, reasoning, and coding, testing synthetic data where it proves useful.

Required profile

  • Strong programming skills in Python and a record of building reliable data-processing or distributed systems.
  • Experience working with large datasets and managing the practical tradeoffs of storage, compute, throughput, and reproducibility.

Excerpt from the ad

OWN YOUR INTELLIGENCE Prime Intellect is building the open superintelligence stack: the infrastructure frontier AI labs build internally, made available to every ambitious AI team. Our platform, Lab, unifies compute…

Source: ad by Prime Intellect, published on Careers pages (ATS). MakeYouFirst summarises this ad; the advertiser remains responsible for its content.

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FAQ

Frequently asked questions

Where is the job based?

The job is based in San Francisco (United States).

How do I apply for this job?

Click “Apply now”: with your free MakeYouFirst account, your CV and cover letter are tailored to this job, the recruiter’s email is found for you and the application is sent from your own mailbox once you approve it.

Listing published by Youssef Douiri, founder of MakeYouFirst · Updated on 12 November 2026

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