Senior Frontend Engineer — Design Systems & AI (Remote)

Neobankbeat

San Francisco, New York, Portland (CA, NY, OR)

Hybrid

USD 201,000 - 251,000

Full time

4 days ago

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Job summary

Mercury is seeking a Senior Frontend Engineer for the Design Systems team in a role that blends classic UI pattern work with AI-enabled design tooling. You will own the components and foundations that power Mercury’s product experiences, shaping how product teams ship faster while maintaining accessibility and performance.

You will lead design-system initiatives, drive adoption across teams, and mentor engineers.

Qualifications

7+ years of frontend development experience focusing on React, TypeScript, and modern web technologies.
Experience building or maintaining a design system or shared component library.
Strong command of modern frontend tooling: build systems, CI/CD, and testing.
High agency with ability to create clarity in ambiguous spaces and take ownership.
First-principles systems thinking oriented to outcomes.

Responsibilities

Build and maintain components, patterns, and foundations (tokens, type, color, layout) with a focus on accessibility and performance.
Lead projects shipping new UI patterns to solve real pain points for product teams.
Develop a design system ready for AI integration and scalable use.
Invest in prototyping tooling to accelerate iteration and concept exploration.
Mentor teammates and define best practices to raise design system and AI fluency.