---
title: 'Member of Technical Staff, Quality Systems at Comfy'
canonical: 'https://feeny.ai/job/member-of-technical-staff-quality-systems-comfy-san-francisco-r5gj6vdedk9z'
type: 'job'
last_seen: '2026-09-04'
---

# Member of Technical Staff, Quality Systems at Comfy

- **Company:** Comfy
- **Location:** San Francisco, CA
- **Compensation:** $180k–$220k
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-08-05
- **Last confirmed live:** 2026-09-04
- **Apply:** https://jobs.ashbyhq.com/comfy-org/902a3d00-ee3a-48ef-bd37-bd6099b55339

## Job description

## THE ROLE

ComfyUI has 4 million users, 60,000+ community-built nodes, and a canvas where every workflow is different. Nobody can write enough tests to cover that by hand. We want someone to build the systems that do it instead.

This is not a testing role in the traditional sense. You won't run standups, manage a manual test team, or own a defect queue. You'll build the infrastructure that decides whether a release is safe to ship - and make that decision fast enough that we can ship every day.

We're moving from a release cycle measured in weeks to one measured in days. That only works if quality is proven by machines, not negotiated in meetings. That's your mandate.

## What you'll do

- Own what "correct" means for ComfyUI, and build the systems that prove it. Release gates, coverage of real user journeys, and the automation that makes shipping daily safe rather than scary.
- Solve the combinatorial problem. Users combine 60,000+ community nodes freely. Design property-based and generative testing that finds breakage in workflows nobody has written yet.
- Solve the visual correctness problem. Canvas rendering, node layout, and link routing break in ways pixel diffs can't catch without drowning you in false positives. Build perceptual comparison that engineers actually trust.
- Solve the non-determinism problem. Model output shifts with seeds, hardware, and drivers. Build the evaluation harness that separates a real regression from acceptable variance.
- Build custom node CI. Our ecosystem is our moat and our largest untested surface. Make third-party node compatibility something we verify continuously, not discover from bug reports.
- Use AI agents aggressively, and verify their output. Agent-driven exploratory testing, generated test cases, self-repairing suites - all of it, gated behind checks that reject the majority of what the agents produce.
- Make quality legible. Publish the metrics that tell us whether we're getting better, and own them in front of the team.

You'll also help us answer a harder question: as more of our code gets written with AI assistance, how do we know it's actually good? Building evaluation for our own engineering loop is part of this role, once product quality is on solid ground.

You might be a good fit if you

- Have built testing or verification infrastructure that other engineers depended on. You write production code - this is an engineering role, not a process role.
- Have worked on a system where scripted test coverage was impossible, and did something smarter about it: property-based testing, fuzzing, simulation, generative testing, or evaluation harnesses.
- Have shipped something that gates releases, and can tell us what happened the first time it blocked a launch.
- Are strong in TypeScript or Python, and comfortable in CI systems and build graphs.
- Have opinions about flakiness. You treat a flaky test as a defect with a root cause, not weather.
- Have a startup mindset: you thrive in fast-moving environments, take ownership, and love solving problems at scale.

Bonus if you have

- Tested graphics, canvas, or rendering surfaces - WebGL, shaders, or visual diffing at scale.
- Built evaluation systems for non-deterministic output: golden datasets, judge calibration, scored regression tracking.
- Maintained an open-source project, especially one where you had to keep a plugin or extension ecosystem working across versions.
- Used ComfyUI, or contributed to it.

What this role is not

- Managing a manual QA team.
- Owning a Jira defect workflow.
- Writing Playwright scripts to someone else's specification.
- We have Playwright, Vitest, Storybook, and Codecov in CI today. That's the floor, not the job.

## Compensation

- Location: San Francisco preferred
- Compensation: $180,000-$220,000 + Equity + Benefits

## ABOUT COMFY

Comfy (https://www.comfy.org) is the AI creation engine for visual professionals who demand control over every model, every parameter, and every output. The most powerful workflow engine for visual AI.

Unlike tools that hide everything behind a prompt box, Comfy lets you connect models, processing steps, and outputs on a canvas where every decision is visible and every step is inspectable. It gives you the building blocks to create workflows nobody's imagined yet, and share them with everyone.

What started as an open-source project in 2023 now has 4 million users, 60,000+ community-built nodes, and 150,000+ daily downloads. It's used by artists, filmmakers, game studios, designers, researchers, and VFX houses, including teams at OpenAI, Netflix, Amazon Studios, Ubisoft, EA, and Tencent.

We're a small, intense team in San Francisco. Our team comes from Stability AI and Google, and many contributed to the ComfyUI ecosystem long before working here. Low ego, high ownership. We work hard and demand a lot of each other, but we have fun. Everyone here is building something meaningful that will end up being our life's work.

If this mission excites you and you view yourself as top-tier talent, your future latent self is waiting for you at Comfy.

Check out our Github https://github.com/comfyanonymous/ComfyUI and blog https://blog.comfy.org. We recently raised $30M at a $500M valuation. The round was led by Craft, with participation from Pace Capital, Chemistry, TruArrow, and others.

## About Comfy

## Company Overview
- **One-liner**: Comfy develops the world’s leading open-source, node-based visual AI platform (ComfyUI) for building, running, and scaling generative AI workflows.
- **Entity Type**: Private (most recent round: Series C, raised in April 2026)
- **Headquarters**: San Francisco, California, United States
- **Founded**: 2023 (first commit to ComfyUI on Jan 16, 2023); incorporated as Comfy Organization Inc. in 2024
- **Founders**: Yoland Y. (Co-Founder & CEO), Robin Huang (Co-Founder)

## Core Business
- **Primary industry/industries**: Generative AI Infrastructure, Creative Tools, Open-Source Software
- **Target customers**: Individual creators, artists, AI researchers, SMBs, and large enterprise teams in media, gaming, advertising, and product design.
- **Mission or purpose statement**: To build the operating system for generative AI — an open, modular, and powerful platform that gives creators full control over every model, parameter, and output.

## Products & Services
- **ComfyUI (Open-Source)**: The core free, node-based interface for building AI pipelines. Users connect models, nodes, and processing steps on an infinite canvas. Supports image, video, 3D, and music generation. [comfy.org](https://comfy.org/)
- **Comfy Cloud**: The full power of ComfyUI running in the cloud, accessible from any browser without local hardware requirements. [comfy.org](https://comfy.org/)
- **Comfy Desktop**: A native desktop application for running ComfyUI locally on personal hardware. [comfy.org](https://comfy.org/)
- **Comfy API**: Enterprise-grade API infrastructure for integrating ComfyUI workflows into production environments. [comfy.org](https://comfy.org/)
- **Comfy Enterprise**: Managed deployment, SSO, governance, and support for large organizations. [comfy.org](https://comfy.org/)
- **Comfy Hub**: A community marketplace featuring 60,000+ custom nodes and thousands of community-shared workflows that can be remixed. [comfy.org](https://comfy.org/)

## Market Standing
- **Valuation**: Not publicly disclosed (conflicting reports list different Series amounts; Tracxn reports a Series C in April 2026 with a valuation marked as private).
- **Total Funding**: $48.8M raised over 2 rounds (per Tracxn).
  - Seed/Venture Round (Oct 2025): $17M led by Abstract and Pace Capital.
  - Series C (Apr 2026): Led by Craft Ventures, with participation from existing investors. [tracxn.com](https://tracxn.com/d/companies/comfyorg/__LucdP_H74QeuMgwthELX9dllM957ntvuLr46WNrY3gU)
- **Key Metric**: Over 60,000 custom nodes developed by the community; used by millions of creators globally. [blog.comfy.org](https://blog.comfy.org/p/comfyui-turns-2-a-journey-and-call)
- **Notable Investors/Partners**: Craft Ventures, Abstract, Pace Capital.
- **Growth Signals**: Headcount grew over 435% YoY (to ~48 employees as of mid-2026). Launched multiple commercial offerings (Cloud, API, Enterprise) in a short timeframe. Active community of node developers and workflow sharers.

## Competitive Advantages
- **Open-Source Moat**: ComfyUI is the de facto standard node-based UI for Stable Diffusion and broader open-source generative AI. The community has built 60,000+ custom nodes, creating a network effect that is extremely difficult for closed competitors to replicate.
- **Full User Control**: Unlike closed platforms (Midjourney, DALL-E), Comfy gives every user full control over models, parameters, and all processing steps, appealing to power users and enterprises.
- **Modularity & Extensibility**: The node-based architecture allows endless customization and remixing, making it a platform, not just an app.
- **Strong Brand in AI Community**: ComfyUI is widely recognized as the go-to tool for advanced generative AI workflows among artists and engineers.

## Strategic Focus
- **Building an "OS for Gen AI"**: The company’s stated ambition is to become the operating system layer for all generative AI creation, moving beyond a UI tool to a full infrastructure platform.
- **Professional & Enterprise Features**: Developing robust workflow management, team collaboration, dependency management, and security features to scale from solo creators to enterprise teams.
- **Improved User Experience**: Making the platform more intuitive for newcomers (e.g., "App Mode") without sacrificing the power and flexibility that advanced users demand.
- **Cloud & API Monetization**: Expanding the Comfy Cloud and API offerings to capture revenue from teams and enterprises that need managed, scalable infrastructure.

## Why Work Here
- **Culture**: Described as a "small, intense team" that values ownership, speed, and craft. Flat structure where collaboration and execution matter more than titles. Emphasis on shipping real work and caring deeply about the open-source community.
- **Remote/Hybrid**: Most roles are based in San Francisco, but remote options are available for many positions. The company runs regular team offsites to stay connected.
- **Visa Sponsorship**: Available for exceptional candidates.
- **Hiring Philosophy**: "We care about what you can do, not where you went to school." The company prefers candidates who have used ComfyUI, built with it, or contributed to the open-source project.
- **Engineering Culture**: A build-first environment where engineers work on foundational, high-impact tech powering real-world video, image, music, and app generation. Emphasis on side projects, open-source contributions, and shipping fast.
- **Team Growth**: The company has grown from a side project to a well-funded startup (~48 employees) with significant growth trajectory and new product launches.

## Sources
1. [comfy.org](https://www.comfy.org/)
2. [Blog - ComfyUI Turns 2](https://blog.comfy.org/p/comfyui-turns-2-a-journey-and-call)
3. [LinkedIn - ComfyUI](https://www.linkedin.com/company/comfyui)
4. [Tracxn - Comfy Profile](https://tracxn.com/d/companies/comfyorg/__LucdP_H74QeuMgwthELX9dllM957ntvuLr46WNrY3gU)
5. [Careers Page (Ashby)](https://jobs.ashbyhq.com/comfy-org)

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