# Member of Technical Staff - Data Ingestion Engineer 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: 2026-06-19
- Apply by: 2026-10-08
- Apply: https://jobs.ashbyhq.com/reflectionai/d85b167c-10cb-4ae6-b792-09afe8a6d3c2
- Page: https://www.1752.vc/careers/jobs/reflection-ai-member-of-technical-staff-data-ingestion-engineer/

## 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.

## What they're looking for

- Experience building web crawling, data ingestion, or large-scale data acquisition systems using Ray, Beam, Spark, or similar technologies
- Familiarity with how LLMs are trained and evaluated, and an intuition for what makes data useful for training
- Comfortable working with very large datasets (multi-TB to PB scale) and building systems that are observable, testable, and maintainable
- Comfortable designing experiments and using data to guide system improvements
- Excellent communication skills. You can explain system behavior. You consider and communicate tradeoffs clearly

Tags: Research