Senior Product Designer

Reactor; San Francisco (CA); On-site; USD 100,000 - 130,000; Full time

Benefits offered by this job

Competitive SF salary and meaningful early equity

Visa sponsorship and relocation support

Generous health, dental, and vision coverage

Job summary

Reactor is seeking a Product Designer in San Francisco to lead product design from concept through execution. You'll design user experiences for web and mobile, build and maintain design systems, and work closely with cross-functional teams to deliver high-quality products quickly. Candidates should have a strong portfolio showcasing live product work, proficiency in modern design tools like Figma, and an understanding of accessibility and user research principles. The role offers a competitive salary, equity, and comprehensive benefits.

Qualifications

• Show us things you've designed that are live and loved.
• Collaborating with engineers to maintain design systems.
• Talk to users, test assumptions, and let data inform your work.

Responsibilities

• Own product design end-to-end from definition to iteration.
• Design experiences across web and mobile contexts.
• Prototype rapidly using Figma and AI-assisted tools.
• Collaborate closely with engineering and product teams.
• Run lightweight user research and incorporate feedback.
• Occasionally support brand and visual assets.

Skills

Proven track record shipping product work

Deep experience with design systems

Strong end-to-end feature ownership

Craftsperson's eye for details

Comfort with rapid prototyping

User research instincts

Strong communication skills

Accessibility awareness

Tools

Figma

React

TypeScript

CSS

Framer Motion

After Effects

Job description

Real-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.

Department: Engineering

Location: San Francisco

What You'll Do

• Own product design end-to-end: problem definition, exploration, execution, and post-launch iteration
• Design experiences across web and mobile contexts
• Build and maintain our design system: components, tokens, and documentation
• Prototype rapidly using Figma and AI-assisted tools to validate ideas before committing to build
• Collaborate closely with engineering and product to ship high-quality work, fast
• Run lightweight user research and incorporate feedback into design decisions
• Occasionally support brand, pitch decks, and visual assets as needed

What We're Looking For

• Proven track record shipping product work. Show us things you've designed that are live and loved
• Deep experience with design systems: components, tokens, and collaborating with engineers to maintain them
• Strong end-to-end feature ownership in a fast-paced, ambiguous environment
• A craftsperson's eye for typography, spacing, color, motion, and visual detail
• Comfort with rapid prototyping and "vibe coding". You use modern tools to move fast, even if you're not writing production code
• User research instincts: you talk to users, test assumptions, and let data inform your work
• Strong communication skills. You can articulate design rationale and align cross-functional teams
• Accessibility awareness baked into your process

Nice to Have

• Familiarity with generative AI, LLMs, or real-time media UX patterns
• Frontend literacy: React, TypeScript, or CSS knowledge that helps you collaborate with engineers
• Motion design experience (Framer Motion, After Effects, or similar)
• Graphic design chops for brand and marketing needs

Benefits

• Competitive SF salary and meaningful early equity
• Visa sponsorship and relocation support
• Generous health, dental, and vision coverage