Guide: Designing with Dev Thinking

Purpose

To help designers adopt a developer-first mindset while creating UI designs — ensuring handoff clarity, reduced rework, and faster builds.

1. Why Dev Thinking Matters

  • Designers often over-design or create visuals that devs can’t implement efficiently.
  • Developers end up guessing missing states, interactions, or tokens.
  • “Dev Thinking” = designing as if you will code it yourself → practical, systematic, scalable.

2. Core Principles

  1. Design with Components, Not Screens
    • Think in reusable building blocks (buttons, cards, modals).
    • If a component can’t be reused → devs write duplicate code.
  2. Tokens, Not Pixels
    • Always apply tokens for color, spacing, and typography (Doc 4.1).
    • Never hardcode values — updates must cascade globally.
  3. Document States & Behaviors
    • Every UI element must have Default, Hover, Active, Disabled, Error, and Success.
    • Add notes like: “Hover darkens 10%, Disabled = cursor not-allowed.”
  4. Respect Grids & Breakpoints
    • Follow Grid & Spacing Rulesheet (Doc 3.5).
    • Test designs at Desktop, Tablet, and Mobile breakpoints.
  5. Prioritize Performance
    • Avoid oversized images/videos.
    • Use SVG icons instead of PNGs where possible.
    • Keep animation subtle, performant.
  6. Predict Dev Questions
    • Before handoff, ask:
      • “What happens when API fails?”
      • “What does error state look like?”
      • “How should responsive layout reflow?”

3. Practical Examples

Bad Design → Dev Pain

  • Designer uses unique button style for every screen.
  • Dev must code 5 different buttons = wasted time.

Good Design → Dev Thinking

  • Designer reuses Button/Primary from library.
  • Dev writes one button component = reusable everywhere.

4. Dos & Don’ts

Do:

  • Reuse design system components.
  • Annotate all interactions & transitions.
  • Test screens at multiple resolutions.
  • Share designs early with devs for feasibility.

Don’t:

  • Export one-off colors (#123456) outside tokens.
  • Leave states undefined.
  • Overcrowd mobile screens with desktop parity.
  • Deliver designs without accessibility in mind.

5. Handoff Checklist (Quick Dev Thinking Test)

Tokens applied correctly

Component reused (not duplicated)

All states included

Responsive variants ready

Interactions annotated

Accessibility covered

File naming consistent