Senior Product Designer (Sonoma)

Senior Product DesignerSan Francisco, CA · Full-timeAbout UsWe're a team of industry veterans who've co-founded Luma AI, shipped the Apple Vision Pro, and scaled real-time video and inference infrastructure at Meta, Replicate, Microsoft and Adobe. We're backed by Tier 1 investors and angels from across AI, gaming, infrastructure and robotics.At Reactor, our mission is to unlock a future where anyone can create interactive media applications that delight, educate, and simulate. We're building a new kind of platform for real-time generative media, enabling developers to go from idea to immersive, dynamic experience in seconds. We aspire to continuously push the boundaries of what's possible: if you're driven to do the same, we'd love to hear from you.About the RoleReal-time video AI and world models are about to change how people interact with computers, with each other, and with the physical world. We're building that future at Reactor. This role is your chance to design how it feels to use and interact with these capabilities.You'll own design at Reactor end-to-end. That means defining the problem, exploring solutions, shipping polished experiences, and iterating on real usage. The interfaces for this technology don't exist yet, so you won't be following established patterns. You'll be creating new ones.What You'll DoOwn product design end-to-end: problem definition, exploration, execution, and post-launch iterationDesign experiences across web and mobile contextsBuild and maintain our design system: components, tokens, and documentationPrototype rapidly using Figma and AI-assisted tools to validate ideas before committing to buildCollaborate closely with engineering and product to ship high-quality work, fastRun lightweight user research and incorporate feedback into design decisionsOccasionally support brand, pitch decks, and visual assets as neededWhat We're Looking ForProven track record shipping product work. Show us things you've designed that are live and lovedDeep experience with design systems: components, tokens, and collaborating with engineers to maintain themStrong end-to-end feature ownership in a fast-paced, ambiguous environmentA craftsperson's eye for typography, spacing, color, motion, and visual detailComfort with rapid prototyping and vibe coding. You use modern tools to move fast, even if you're not writing production codeUser research instincts: you talk to users, test assumptions, and let data inform your workStrong communication skills. You can articulate design rationale and align cross-functional teamsAccessibility awareness baked into your processNice to HaveFamiliarity with generative AI, LLMs, or real-time media UX patternsFrontend literacy: React, TypeScript, or CSS knowledge that helps you collaborate with engineersMotion design experience (Framer Motion, After Effects, or similar)Graphic design chops for brand and marketing needsLogisticsIn-person in San Francisco. We believe the best ideas come from being together.BenefitsCompetitive SF salary and meaningful early equityVisa sponsorship and relocation supportGenerous health, dental, and vision coverage