> Markdown version of [/jobs/ext/4622247-performance-modeling-engineer](https://www.wearedevelopers.com/jobs/ext/4622247-performance-modeling-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Performance Modeling Engineer - **Company:** Matx Inc - **Location:** Mountain View, CA, United States (Remote available) - **Salary:** $160,000 - $275,000 - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Large Language Models - **Published:** November 7, 2026 - **Apply:** https://www.juju.com/job/28_25304_cc2e560b3751cd331fce30c20ef78a3d ## About the Role * Strong background in performance modeling * Strong working knowledge of latest LLM model architectures * Experience with computer architecture, particularly AI accelerators ## Description * Translate AI accelerator architecture into performance models * Maintain modeling framework capabilities and releases * Automate creation of detailed tensor layouts for frontier LLMs * Create tools, compilers, and automations to integrate with the broader organization tech stack * Collaborate with ML, Software, and Architecture teams to support experiments and workflows