Software Engineer, Design Systems

Assembled

1d • $160,000 - $270,000 • Onsite

About The Position

At Assembled, we're rebuilding how design and engineering create products from the ground up — a brand-new design system and the AI-native workflows that bring it to life. We're looking for a Software Engineer to lead the technical vision for that work: defining the architecture of the system, building the infrastructure around it, and helping shape the next generation of design-to-code workflows.
Working closely with our Design Systems Designer, you'll make foundational decisions that influence every product team at Assembled — from component APIs and token architecture to performance, accessibility, developer experience, and how AI coding agents generate production-quality UI.

Requirements

• Has 3+ years of experience building frontend products, with meaningful ownership over architecture and technical direction
• Has owned or significantly evolved a design system used across multiple teams or products
• Has deep frontend expertise, including TypeScript, component architecture, and modern frontend tooling.
• Has raised the quality bar of a product, improving performance, accessibility, usability, and interaction design
• Has strong product and design instincts, with a sharp eye for craft and user experience
• Communicates clearly and collaborates effectively, especially across engineering and design
• Is excited about AI-assisted development workflows, and how design systems can help guide and accelerate AI-generated code

Nice To Haves

• Experience with our full stack: React, Storybook, and data visualization libraries such as visx, D3, or Chart.js
• Experience building B2B SaaS or highly interactive, data-rich applications

Responsibilities

• Own the technical direction of our design system, from token architecture and components to tooling, testing, and adoption
• Shape how AI coding agents build UI, through component APIs, documentation, guardrails, and developer workflows
• Modernize our frontend foundations, including component architecture, tooling, and development patterns
• Raise the bar for frontend quality, including performance, accessibility, responsiveness, and interaction detail
• Build the infrastructure that keeps the system reliable at scale, including testing, visual regression, CI/CD, and versioned releases
• Establish frontend best practices across teams, helping engineers build more consistent, maintainable, and high-quality user experiences
• Influence product decisions early, surfacing technical constraints, tradeoffs, and opportunities throughout the design process

Benefits

• Generous medical, dental, and vision benefits
• Flexible time off
• Monthly credits for professional development, general wellness, Assembled customers, and commuting
• Paid parental leave
• Catered lunches every day (M–F) and fully stocked SF office
• 401(k) plan enrollment
• Stock options

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed