Senior Product Designer San Francisco · Engineering · Full Time →

Reactor; San Francisco (CA); On-site; USD 100,000 - 140,000; Full time

Benefits offered by this job

Competitive salary

Early equity

Health, dental, and vision coverage

Visa sponsorship and relocation support

Job summary

Reactor in San Francisco is looking for a talented Product Designer to own the design process from problem definition to post-launch iteration. This role offers the opportunity to craft experiences across web and mobile, working closely with engineering and product teams to create innovative solutions.

Ideal candidates will have a proven track record in product design, strong communication skills, and a good grasp of design systems. This position includes competitive salary, equity options, and health benefits.

Qualifications

• Proven track record shipping product work in real-world applications.
• Deep experience with building and maintaining design systems.
• Strong feature ownership in fast-paced environments.

Responsibilities

• Own product design from problem definition to post-launch iteration.
• Design experiences across web and mobile contexts.
• Collaborate closely with engineering and product teams.

Skills

Product design experience

Design systems expertise

User research instincts

Strong communication skills

Rapid prototyping

Tools

Figma

React

TypeScript

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.

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 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
• Graphic design chops for brand and marketing needs
• Competitive SF salary and meaningful early equity
• Visa sponsorship and relocation support
• Generous health, dental, and vision coverage