# Member of Technical Staff — Training at RadixArk

- Company: RadixArk
- What the company does: RadixArk builds large-scale inference and training systems for the entire AI community, making frontier-level AI infrastructure open and accessible. Backed by Accel.
- Company website: https://www.radixark.ai/
- Type: Startups (AI role)
- Level: Senior
- Location: Palo Alto, CA
- Work setup: On-site
- Pay: $200K to $400K base salary per year (USD)
- Posted: 2026-02-17
- Apply by: 2026-10-08
- Apply: https://job-boards.greenhouse.io/radixark/jobs/4134907009
- Page: https://www.1752.vc/careers/jobs/radixark-member-of-technical-staff-training/

## About the role

As a Member of Technical Staff, Training, you will design, build, and operate the distributed systems behind large-scale model post-training — spanning training, inference, and orchestration, with a focus on the performance, correctness, scalability, and reliability of workloads running across large GPU clusters.

## What they're looking for

- 3+ years of experience building or operating distributed machine learning systems, large-scale training infrastructure, or high-performance inference systems
- Hands-on experience with post-training systems, training backends, or inference systems for large language models (e.g., Megatron-LM, FSDP, SGLang, TensorRT-LLM, vLLM)
- Experience in at least two of the following areas:
- Numerical correctness or low precision
- Stability, reliability, or fault tolerance
- Post-training algorithm recipes and orchestration infrastructure for large training runs

Tags: Member of Technical Staff