Jon CeronSenior Product Designer
EN

I design data‑heavy B2B tools, and design systems so people and AI tools build from the same source.

  • 10 years designing digital products
  • Design experience in B2B and B2C
  • I use AI to make my design process faster and more consistent

Open to senior product design roles

Contact me

My work

Projects I've led or contributed to.

How I work with engineering

A screen is not done when it looks right. It is done when it is built from the system.

Visual QA in staging
I inspect staging builds with Chrome DevTools and check that computed styles resolve to tokens, not hardcoded values. Gaps become issues: on the monitoring tool, each one went to a joint triage.
Token compliance is an acceptance criterion
A screen with a literal color, size or spacing value is not finished. A build step can enforce it.
Markdown specs so AI builds on-system
Every component has a Markdown spec. AI tools read it, so what they generate uses the same tokens.
  1. Figma component

    Designed once, with its states.

  2. Markdown spec

    Written so people and AI read the same source.

  3. Generated UI

    Built from the spec, on the tokens.

  4. Verification

    Checked in staging against the spec.

This site documents its own design system

Tokens and component specs are written in Markdown, so people and AI tools read the same source. A build step turns the tokens into CSS and fails if a component bypasses them.

The system, as built

Dark themeLight theme

Color steps

Text colors

  • Aatext-primary15.9:117.5:1
  • Aatext-secondary9.4:19.6:1
  • Aatext-tertiary5.7:16.0:1
  • Aaaction-text8.9:17.6:1

Type

  • AaHeading 20px
  • AaBody 16px
  • AaSmall 14px
  • 1,024Mono 16px

Spacing

  • 8px
  • 16px
  • 24px
  • 32px
  • 40px

About

A candid photo of Jon

I started in brand identity, designing logos and the manuals that keep them consistent. Today I design B2B product systems.

Trained in design and audiovisual communication.

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