Member of Technical Staff, Pre-Training Data Quality Engineer
Reflection is hiring for Member of Technical Staff, Pre-Training Data Quality Engineer in San Francisco, CA. Staff level. First seen August 6, 2026; open as of November 9, 2026. Jobs taken straight from company career pages — no aggregator in between.
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- Company
- Reflection
- Where
- San Francisco, CA
- Level
- Staff
- First seen
- August 6, 2026
- Listed via
- Ashby
What the posting says
You will directly shape how our models perform on critical capabilities. Working with world-class researchers on our pre-training teams, you’ll help turn fuzzy notions of “good data” into concrete, measurable standards that scale across large data campaigns. We’re looking for engineers who combine strong engineering fundamentals with a deep curiosity about data quality and its impact on model performance. Working closely with our pre-training teams you will: - Own upstream data quality for LLM pre-training; as a specialist or generalist across languages and modalities - Partner closely with…
Read more and apply on Reflection's site
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