Fullstack Engineer

About

We’re building the future of storytelling and video editing. We’re a small team that moves fast and builds things we’re proud of. We care obsessively about taste: in design, in product, in every detail.

The Role

Cardboard runs a real video editor in the browser, backed by a serious cloud media pipeline and an AI agent that actually understands footage. We’re hiring a Fullstack Engineer who can own a feature from the pixel a user clicks all the way down to the service that renders it. You move up and down the stack without flinching, and you ship things that work.

You’ll be working alongside a team of engineers who all care deeply about craft, including the founders. You like owning problems end to end, and you’d rather ship something great this week than something perfect next quarter.

What you’ll actually do

• Build and ship features across the whole stack, from the editor a user touches to the services behind it.
• Work on genuinely hard browser problems: real-time editing, smooth playback, and working with large media on the client.
• Help shape the AI editing experience that lets the agent make real edits.
• Keep the product fast and reliable, even on big, demanding projects.

Who you are

• You have strong engineering fundamentals and real experience owning features end to end.
• You move comfortably across the stack: frontend, backend, and the infrastructure in between.
• You’re not scared of a gnarly query, a render worker, or a tricky piece of browser state.
• You’re obsessed with quality and performance. You notice when something feels janky and you fix it.
• You thrive in a fast-moving, lightly-processed environment where you set your own bar.

Bonus: you’ve worked on media or video processing, real-time or offline-first systems, or built on top of LLMs.

What you get

• Competitive salary and founding-team equity.
• Unlimited tokens across every AI model. Use whatever you want, as much as you want.
• A healthy budget for AI tools and any peripherals you need to do your best work.