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Senior/Staff ML Engineer, Performance Optimization

ComfyUI
|AI Application
San Francisco
full-timeEngineering

Job Description

The Role We're looking for someone who loves optimizing model inference to join us in building the core of ComfyUI - the most complex and bleeding-edge part of our engine. You'll be working on making AI models run faster and more efficiently than anyone thought possible.

You are a good fit if this describes you:

  • You geek out about model inference, torch optimizations, and memory management
  • You've written production PyTorch code that pushes performance boundaries
  • You love diving deep into how models actually work under the hood
  • You get excited about making insanely optimized code that just works
  • You think the current state of ML deployment could be way better

What you'll do:

  • Build and optimize the core inference engine that powers ComfyUI
  • Make massive models run faster and use less memory than anyone else
  • Work directly with our core team on architecting new features
  • Tackle the hardest technical problems in the visual AI space
  • Help shape where we take this technology next

Bonus: If you've worked with diffusion/LLM models before or built custom nodes for ComfyUI, that's awesome

About ComfyUI

First seen: April 26, 2026
Last updated: August 5, 2026