Senior Design Systems Engineer

Quick Facts

• Role: Senior Design Systems Engineer (IC)

• Focus: Building design system components and APIs used across product teams

Description

You will build and evolve the components and APIs that every product team depends on—making the design system real in code by enforcing UX rules consistently. You’ll work closely with the design systems lead and designers to convert UX patterns and principles into accessible, coherent components, including safeguards for UI drift as AI agents build alongside humans. You’ll also contribute to internal tooling and infrastructure to keep velocity high without sacrificing quality.

Responsibilities

• Build and evolve the design system components and APIs

• Decide when rules belong in components, guidance, or automation that catches drift

• Partner with designers and the design systems lead to implement consistent UI patterns

• Help the system hold up when engineers and AI agents build on top of it

• Contribute to internal tooling and infrastructure supporting developer velocity and quality

• Champion UX and accessibility and maintain a high quality bar

• Improve developer experience with elegant, consistent component APIs

• Advocate for users by iterating on core product experiences

• Participate in team rituals such as design crit, story creation, and weekly stand-ups

Requirements

• Tech/startup or digital product agency experience, or equivalent

• Strong hands-on frontend engineering ability (able to pass engineering loops)

• Experience building design system components and APIs

• Strong semantic HTML, modern CSS, and JavaScript skills (preferred React)

• Ability to drive end-to-end implementation with sound UX and system design judgment

• Strong understanding of product design software (preferred Figma) and visual/interaction design principles

• Strong organizational skills and a documentation mindset

• Excellent communication and collaboration; ability to push back with reasons

• Strong attention to detail: motion, UI states, accessibility, and coherent design decisions

Benefits

• Flexible PTO

• Health and wellness stipend

• Weekly coffee stipend

• Centralized home-office equipment ordering

• Health coverage options (varies by country) including medical, dental, and vision

• 401(k) with employer match (US) and One Medical annual membership (US)

• Fertility HRA and parental leave options

• Pet insurance

• In-office perks (lunch, snacks, drinks)

• Relocation expense coverage to NYC or SF (if needed)

Additional Coverage (by region)

• Canada: Group medical/dental/vision via Sun Life; RRSP + DPSP match; parental leave at 100% pay (additional time at reduced pay)

• UK: Private medical via Freedom Elite; workplace pension via Penfold; parental leave at 100% pay (additional time at reduced pay)