Portrait of Donnie D'Amato

Compass, UX Engineering & Design Systems

Guiding Style

Founded Compass's design systems practice: turned repeated prototype work into a component library the entire organization trusted.

2017

On this page

Overview

At the real-estate tech company Compass, I grew from a frontend engineer into the UX Engineer role, the only engineer inside the design organization, and founded the design systems practice, turning repeated prototype work into a shared library and a team.

Problem

As the sole engineer reporting into the design organization, I was remaking the same assets for every new prototype. There was no shared component library, and engineering teams had no vetted source of truth for building production versions of approved designs, so approved work drifted on its way to production and every team solved the same problems again.

Constraints

Approach

I built the component library out of the design org’s real, repeated needs, which is what made engineering treat it as a trusted resource rather than a side project. To stop design and code from drifting apart, I generated the Sketch symbol library directly from the coded components, so designers and engineers picked from the same set of parts. And because teams were mid-migration between frameworks, I delivered shared pieces, most visibly a global navigation, in a form any team could adopt without rewriting their app, so one nav shipped everywhere instead of being rebuilt per product.

Key Decisions

Make the global navigation adoptable by every team regardless of how their app was built

Reasoning Alternatives
Applications were owned by different teams working in different ways, and none of them reported to me. Delivering something framework-agnostic meant adoption was a small ask rather than a migration, which is the only way one nav reaches everywhere. Ship it for the newest framework only
Let each team reimplement the nav

Drive the design library from the coded components

Reasoning Alternatives
Generating Sketch symbols from production components meant designers and engineers argued from one source of truth. It removed a recurring class of disagreement about which artifact was correct. Hand-maintain a parallel Sketch symbol library
Let design and code references diverge

Ground the library in the design org’s repeated needs

Reasoning Alternatives
Starting from work the design org actually did every week meant the first version already earned its keep, which is what gave engineering a reason to adopt it voluntarily. Design a comprehensive library up front
Wait for engineering to request components

Result & Impact

The library and global navigation became foundational shared resources across product teams, and the design systems team established a durable practice that outlasted my tenure.

Learnings

The story behind it

I started at Compass as a frontend engineer. Within three weeks I was helping build out the frontend engineering team, interviewing at least three candidates a week; the group we assembled was the most talented I have worked with before or since.

Supporting the design org meant remaking the same assets for every prototype, so I built a component library. Around then I also adopted an in-house idea called Intents, a semantic approach to design tokens that I would carry forward and keep developing for years.

The company was mid-migration between frameworks while I was there, and that mix shaped how I thought about delivery: if a shared resource only works for the teams who already moved, it is not shared. Much of my later research there went into making one library usable no matter what a team had chosen.

Beyond the library, I mentored engineers in the brand and marketing department and took ownership of older pages that had lost their maintainers, bringing them back under active care.

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