Founding Engineer (Front end / Full Stack) at Yarn
Yarn is seeking a talented Founding Engineer (Front-End or Full-Stack) to join our small, talent-dense team onsite in Soho, New York City. You’ll play a key role in shaping the future of AI-powered video creation by building ambitious new products and pipelines from the ground up.
As one of our first engineers, you’ll work across the stack with significant ownership and equity. You’ll collaborate closely with our design and AI teams to prototype, iterate, and launch features that fundamentally change how the fastest-growing startups produce video content. This role is best suited for highly ambitious engineers with a founder’s mindset who are excited to invent what doesn’t exist yet.
What you’ll work on
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Building out core agent workflows for our video platform
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Adding Figma-style real-time collaboration between humans and AI
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Prototyping new AI pipelines (diffusion models, reasoning models, evals, internal/external data)
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Extending and optimizing server-side video and graphics rendering pipelines
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Writing WebGL shaders and special effects for next-generation video experiences
How we work
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Small, hard-working, talent-dense team passionate about our customers
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Iterative, customer-driven development with rapid prototyping and experimentation
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Generalist mindset: we pick up new challenges and learn new technologies quickly
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Collaborative, ambitious culture with a focus on building things that haven’t been done before
The ideal candidate
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4+ years of experience as a full-stack or front-end software engineer (hard minimum)
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Strong expertise in React for complex application development
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Proficiency in modern programming languages (Python, TypeScript, etc.)
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Experience working at early-stage startups (Seed–Series B) or high-bar engineering teams (FAANG or similar)
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Comfortable owning projects end-to-end across the stack
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Excited to be part of an onsite NYC team with high intensity and ownership
Compensation & Details
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Salary: $170,000 – $225,000 USD
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Equity: 0.75% – 1.25% (top 10% range)
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Location: Onsite in Soho, New York City (no remote/hybrid)
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Visa sponsorship: Not available
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Employment type: Full-time
Yarn is backed by Y Combinator, General Catalyst, Race Capital, and leading angels from Meta, Adobe, Roblox, and Pika Labs. We’ve raised $7M to date and are building the next generation of AI video tools to help startups create content 100x faster than today.