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OpenAI · public posting read

Machine Learning Engineer, Integrity

This is an analysis of the public job description. It is not a confirmed description of this company's interview process, and no company has reviewed or endorsed it.

Source: https://openai.com/careers/machine-learning-engineer-integrity-san-francisco/

Last verified Sep 16, 2026. Postings close without notice; check the source before you rely on it.

What the posting clearly emphasises

  • Training and fine-tuning LLMs applied to content and user understanding.
  • Scalable data and training pipelines, and deployment into production.
  • Conventional data structures and algorithms alongside ML work.
  • Cross-functional work under loosely defined priorities.

Paraphrased from the public posting.

What that likely means for preparation

  • Expect classification and abuse-detection framing: label quality, drift, adversarial users, and the cost of a false positive on a real account.
  • Be ready to defend a fine-tuning decision against a cheaper baseline, with the evaluation set that justified it.
  • A conventional algorithms exercise is plausible here in a way it is not in every research posting; keep implementation warm.
  • Prepare one story about choosing what to work on when priorities were undefined.

Inference from the posting. Not confirmed.

What stays unknown about the loop

  • Whether integrity-specific policy judgment is tested as its own round or folded into a behavioural conversation.
  • The round order, count and length. Postings describe the job, not the loop.
  • Whether AI assistants are allowed, required or banned in any coding exercise.

Anything a recruiter tells you outranks every inference on this page.

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