Capsule builds a browser-based AI video studio that automates transcription, LLM summarization, diffusion B-roll generation, templates and JS-based automation (CapsuleScript) for collaborative enterprise video production.
Capsule is building the world’s most intuitive AI-powered video editing tool, designed for modern teams. We’re a Series A startup led by two serial founders who have built and scaled creative platforms used by hundreds of millions of people. We’re backed by top-tier investors behind Webflow, Figma, Slack, and Replit. We’ve grown quickly. In less than a year, 100+ enterprise teams—including HubSpot, ServiceNow, and Instacart—use Capsule to create high-quality, on-brand video content at scale. We're hiring a Senior Frontend Engineer to help us build the next generation of web-based video editing. You’ll be a key contributor to our engineering culture and product direction, working closely with design and product in a zero-ego, high-ownership environment. WHAT YOU’LL DO - Build beautiful, performant, responsive web UIs using React and Next.js - Translate designs into high-quality code—adding the nuance that turns "good" into "great" - Collaborate with design and product to shape new features from concept to launch Implement and maintain our design system and component library - Own integrations with internal and 3rd-party APIs - Identify and eliminate technical debt, simplify architecture, and improve performance - Champion quality through testing, code reviews, documentation, and best practices - Explore new technologies through rapid prototyping and R&D - Contribute to a high-velocity, collaborative engineering culture - Stay up-to-date with AI coding tools to gain leverage and velocity WHAT WE’RE LOOKING FOR - 4+ years of professional frontend experience (React, Next.js, or similar frameworks) - A strong sense of product and design—your work should feel as good as it looks Experience building production apps from scratch - Solid knowledge of modern frontend architectures and web video technologies - Proficiency with Figma and collaborating closely with design - Strong communicator with high emotional intelligence - Entrepreneurial mindset with a bias toward action - Bonus points for: - API development with Node.js http://node.js - WebAssembly and/or WebGL - AI Engineering - Familiarity with CI/CD and APM tools PERKS & BENEFITS - Salary between 100k-170k USD +equity - Comprehensive health coverage (medical, dental, vision) - Generous PTO - A diverse, mission-driven team with big ambitions and low ego