Mosaic is an agentic video editing paradigm. It enables anyone to create and run their own multimodal video editing agents in a node-based canvas. Once created, Mosaic's AI agents can run edits on autopilot, be reused across video projects, and self-improve over time.

Our initial prototype of Mosaic won the $25,000 grand prize for 1st place out of 6,400 entrants in the Google Gemini Kaggle competition. Mosaic was also the winner of the SaaStr AI Pitch competition out of hundreds of other AI startups.

We are a highly technical team of ex-Tesla engineers and are looking for technical and high agency engineers to join us on our mission to build an agentic video editor.

What You’ll Do

As a Product Engineer at Mosaic, you’ll work at the intersection of design, AI, and storytelling to bring new creative tools to life. You’ll build and ship user-facing features that push the boundaries of what’s possible in AI-powered video editing — from real-time workflows and interactive canvases to intelligent editing agents that understand intent.

You’ll collaborate closely with the founders and research team to translate user feedback into elegant product experiences, working across the full stack to prototype, test, and iterate quickly. Every line of code you write will directly shape how creators and teams edit video in the age of AI.

What We’re Looking For

If you care deeply about product quality, creative tooling, and fast iteration, this role is for you. We’re looking for engineers who:

• Have strong full-stack development experience (React, TypeScript, Node.js, or similar)
• Are comfortable designing and shipping quickly
• Enjoy building delightful, high-performance user experiences and interfaces
• Have experience (or strong interest) in applied AI, media, or creative tools
• Are self-directed, detail-oriented, and thrive in a fast-paced environment
• Prefer solving problems end-to-end — from idea to deployed feature

We're on the frontier of what multimodal AI and agentic systems are capable of, and we're applying these to video — one of the most technically challenging mediums to work with.