# Member of Technical Staff - Mid-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/d8c898c0-83d9-4d1c-b098-a98c4c2a64a1
- Page: https://www.1752.vc/careers/jobs/reflection-ai-member-of-technical-staff-mid-training-infra/

## About the role

Design, build, and operate large-scale GPU infrastructure for high-throughput model inference and mid-training workloads. Develop systems that power synthetic data generation and reinforcement learning pipelines at scale.

## What they're looking for

- Experience deploying and operating large-scale GPU systems for inference or model serving
- Several years of hands-on experience building and running production infrastructure
- Strong understanding of GPU performance characteristics and optimization techniques
- Experience working with modern inference frameworks such as SGLang, Megatron, or similar high-performance LLM runtimes
- Familiarity with distributed reinforcement learning infrastructure or rollout generation systems
- Experience optimizing throughput for large-scale model execution workloads

Tags: Research