Senior Software Engineer - Design Systems

Any Office or RemoteFull-timeCA$201k–CA$251k2026-11-06 → 2026-11-10

Core

Build and maintain the foundational components, patterns, and tools (tokens, type, color, layout) for Mercury's product, integrating AI capabilities to enhance prototyping and development workflows.

Role type

Senior Frontend Engineer (Design Systems)

Builds

Design system components, shared UI patterns, and AI-integrated development tools

Domain

Fintech, Design Systems, AI

Deliverable

production ML models

Required skills

React, TypeScript, modern web technologies, design system architecture, CI/CD, testing, systems thinking, product taste, AI fluency

Preferred skills

Mentorship, accessibility expertise, pixel-level craft

Technologies

React, TypeScript, AI tools

Responsibilities

Build and maintain design system components and foundations; Lead projects to ship new UI patterns; Develop AI-ready design system features; Invest in prototyping experiences; Mentor team on craft and AI fluency

Seniority

Senior, hands-on IC

About Mercury

Mercury is on a mission to defy those expectations. We're a financial technology company that helps startups spend less time banking* and more time building. We believe that the key to our success revolves around thoughtful design — and we hold the craft of that design to an exceptionally high standard. We're looking for a Staff Brand Designer who sets that bar: someone whose eye is so precise, and whose execution is so considered, that the work around them gets better just by virtue of their presence.