JM Family Design System
For product managers

Scope faster. Align cleaner. Ship with fewer surprises.

Common UI is already built, named, and documented. Your design sprint becomes a decision sprint — less time aligning on what a button looks like, more time deciding what the product should do.

Why this helps you

Cut delivery risk

Patterns are already designed and engineered. The team isn’t estimating new work — they’re assembling proven pieces.

Shared vocabulary

“Use a primary button with a confirmation modal” means the same thing in your story, the design, and the PR. Less ambiguity, faster review.

Quality is the default

Accessibility, responsiveness, and consistency come baked in. Fewer late-stage rework cycles. Fewer audit findings.

How to start

Five concrete moves you can make today — each links to the page that gets you unstuck fastest.

  1. Skim Patterns → Overview during shaping

    Most features fit an existing pattern. Knowing what is on the shelf changes which features get scoped, sized, and prioritized.

    Open Patterns
  2. Use system vocabulary in stories

    Reference tokens and component names — "primary button", "stack-md spacing", "feedback.error.bg" — in tickets and acceptance criteria.

    Open Components
  3. Plug the system into your workflow

    The six-stage UX workflow gives teams a shared way to frame the problem, test options, and define what done means.

    Open Workflow
  4. Pressure-test custom requests

    "Can we use an existing pattern?" is the cheapest question to ask. The answer is yes more often than people expect.

    See patterns
  5. Add adoption to definition of done

    Treat "uses design system components" the same way you treat "passes tests" — non-negotiable. Drift is expensive to fix later.

    Governance

Where to go next

The pages most often referenced by product managers. Bookmark them — you’ll be back.

Use it. Track it. Improve it.

Adoption is the leading indicator that the system is working. If your team is reaching for custom solutions repeatedly, that is a signal worth raising — for everyone.