# Member of Technical Staff - Pre-Training Infra 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: 2026-03-24
- Apply by: 2026-10-08
- Apply: https://jobs.ashbyhq.com/reflectionai/5f773a1e-fee2-427d-88f5-0eee11b76d77
- Page: https://www.1752.vc/careers/jobs/reflection-ai-member-of-technical-staff-pre-training-infra/

## About the role

Build and scale distributed training systems that power frontier model pre-training. Work closely with research teams to design and operate large-scale training runs for foundation models.

## What they're looking for

- Experience building or operating distributed training systems for large machine learning models
- Strong experience working with modern distributed training frameworks such as Megatron, DeepSpeed, or similar large-scale training systems
- Familiarity with large-scale model parallelism strategies (data, tensor, pipeline, or expert parallelism)
- Experience optimizing training throughput and GPU utilization in large distributed environments
- Familiarity with GPU communication libraries such as NCCL and performance tuning for distributed workloads
- Experience working closely with ML researchers to productionize experimental training workflows

Tags: Research