# Member of Technical Staff - Data Quality Engineer (Pre-training) at Reflection AI

- Company: Reflection AI
- What the company does: Make intelligence open and accessible to all. Backed by Battery, Lightspeed and Sequoia.
- Company website: https://reflection.ai/
- Type: Startups (AI role)
- Level: Senior
- Location: San Francisco, CA
- Work setup: On-site
- Posted: 2026-01-08
- Apply by: 2026-10-08
- Apply: https://jobs.ashbyhq.com/reflectionai/3f496904-537e-47fd-8af8-a9b7bc490a0f
- Page: https://www.1752.vc/careers/jobs/reflection-ai-member-of-technical-staff-data-quality-engineer-pre-training/

## About the role

Data is playing an increasingly crucial role at the frontier of AI innovation. Many of the most meaningful advances in recent years have come not from new architectures, but from better data. As a member of the Data Team, your mission is to ensure that the data used to train our models meets a high bar for quality, reliability, and downstream impact. You will directly shape how our models perform on critical capabilities.

## What they're looking for

- Proficiency in Python and building ML / LLM workflows. Must be comfortable debugging and writing scalable code
- Experience working with large datasets and automated evaluation or quality-checking systems
- Familiarity with how LLMs work and can describe how models are trained and evaluated
- Excellent communication skills with the ability to clearly articulate complex technical concepts across teams

Tags: Research