Member of Technical Staff, Frontend

Mixpeek; San Francisco (CA); On-site; USD 150,000 - 190,000; Full time

Job summary

Comfy is seeking an early front‑end engineer to help ship new features and shape product experiences in a fast‑growing startup.

You'll lead the design and development of core front‑end architecture, prototype rapidly, and mentor future engineers as part of the founding team. San Francisco‑based with a strong emphasis on fast, accessible, and high‑quality UX.

Qualifications

• Shipped apps with real‑world traffic or user counts.
• Experience leading technical initiatives and shipping scalable web/desktop apps.
• Strong expertise with modern front‑end tooling (TypeScript, CI/CD).
• Expertise optimizing complex UX interactions in web/desktop apps.
• Passion for fast, accessible, and beautiful user experiences.
• Startup mindset: ownership and problem solving at scale.

Responsibilities

• Lead design and development of core front‑end architecture for new products from the ground up.
• Rapidly prototype and iterate on features to validate ideas and user experience.
• Establish best practices for code quality, testing, performance, and maintainability.
• Collaborate with design, product, and backend teams to shape the UX end‑to‑end.
• Contribute to technical and product decisions as part of the founding engineering team.
• Mentor engineers and help build a high‑caliber front‑end team and culture.

Job description

The Role

As one of our first front‑end engineers, you’ll ship new features.

What you’ll do:

• Lead the design and development of core front‑end architecture of new products from the ground up.
• Rapidly prototype and iterate on features to validate ideas and user experience.
• Establish best practices for code quality, testing, performance, and maintainability.
• Collaborate closely with design, product, and backend teams to shape the user experience end‑to‑end.
• Contribute to key technical and product decisions as part of the founding engineering team.
• Mentor future engineers and help build a high‑caliber front‑end team and culture.

Must‑have experience:

• Shipped applications with significant real‑world traffic or user counts.
• Experience leading technical initiatives and shipping scalable, high‑performance web and desktop applications.
• Strong expertise with modern front‑end tooling. (TypeScript, CI/CD pipelines)
• Expertise in optimizing complex UX interactions in web and desktop applications.
• A passion for creating fast, accessible, and beautiful user experience.
• Startup mindset: you thrive in fast‑moving environments, take ownership, and love solving problems at scale.

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 $30 M at a $500 M valuation. The round was led by Craft, with participation from Pace Capital, Chemistry, TruArrow, and others.