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Senior Design Engineer

North One · Boston, MA · On-site

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About North One

Backed by Battery.

About the role

We're expanding the team and hiring two design engineers who will have real ownership across the product. You'll work on the hardest things to get right: the details that make an interface feel intentional, the systems that make quality consistent at scale, and the problems that require someone who thinks in both design and code.

What they're looking for

  • You're well-versed in React, JavaScript (TypeScript), HTML, and modern CSS
  • You work in a real engineering environment. You’re comfortable using Git, writing PRs, reviewing code, and contributing directly to a shared codebase
  • You can identify what's wrong (or right) with a design or component, articulate the specific reason why, and know how it could be improved
  • You have strong opinions about craft, you hold yourself to a high bar, and your portfolio or GitHub shows it. You sweat the details and truly care about the last 10% that makes great software
  • You prioritize speed, reusability, accessibility, cross-browser support, functional motion as you build, not as an afterthought
  • You have genuine curiosity about AI tooling and a grounded enough understanding of how these tools work to build with them
More about this role

Relay is a digital banking platform that gives self-made business owners the tools and know-how to be great with money—bringing clarity, confidence, and control to every dollar earned, so they can turn hard work into lasting success. We do this by replacing financial guesswork with real visibility, transforming cash flow from a constant source of stress into a clear signal owners can use to run stronger, more resilient businesses.

At Relay, we believe that quality and craft are no longer just nice to haves, they’re product requirements. That belief shapes how we build. Design Engineering is a small, deliberate function with a clear mandate: own the front-end across the product, hold a high bar of quality, and raise it over time. The team works directly with product and design, responsible for the UI, the interactions, and the design systems that everything is built on top of.

We're expanding the team and hiring two design engineers who will have real ownership across the product. You'll work on the hardest things to get right: the details that make an interface feel intentional, the systems that make quality consistent at scale, and the problems that require someone who thinks in...

Read the full posting on North One's site ↗

Design

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