Tanjiro Kamado
design_systems_lead · Tokyo, JP
file tanjiro-kamado.cv
version 4.2.0
updated 2026-06

I run the design system at a fintech product used by 3.1M people. Over 6 years I have shipped 2 major token migrations and cut design-to-code handoff time by about 40% by keeping one source of truth for color, type, and spacing. I like naming things, which is a strange thing to enjoy.

tanjiro.kamado@example.com
+81 3-5550-0142
tanjiro-kamado.example.com
01

Palette · working traits

Primary
#7C5CFF
System owner. I hold the token spec and say no when it drifts.
Success
#22D3A6
Ships. Two token migrations landed without breaking prod.
Warning
#FF8A5C
Blunt in review. Flags a11y and naming gaps early, not late.
Info
#4CC9F0
Teaches. Ran 18 internal sessions for 60+ engineers.
Highlight
#F5C518
Detail heavy. Reads the diff, checks the contrast ratio.
Neutral
#E8EDF2
Calm. Prefers quiet defaults over decoration.
02

Type scale · experience specimen

font.display/700
Design Systems Lead
font.h1/600
Owning tokens across 4 platforms
font.h2/600
One spec, web · iOS · Android · docs
font.body/400
220+ components documented with usage rules and code snippets.
font.caption/400
Every value traces back to a single token file. No stray hex.
03

Spacing scale · career rhythm

space.1 / intern
2019
space.2 / product designer
2020
space.4 / senior
2021–22
space.6 / systems lead
2023–now
04

Component preview · work history

<SystemsLead /> Kōbako Financial · 2023–present
Design Systems Lead
Tokyo · team of 5
  • Migrated 1,900 hard-coded values to 340 named tokens; cleaned handoff time by ~40%.
  • Shipped a semantic color layer with WCAG AA checks baked into CI, catching 70+ contrast fails before merge.
  • Grew the component library from 120 to 220 documented parts across web and 2 native apps.
<SeniorDesigner /> Marumi Studio · 2021–2023
Senior Product Designer
Tokyo · design system pod
  • Built the first token pipeline (Figma variables to code) for 3 client products.
  • Wrote contribution docs that took new hires from 0 to first merged component in about 5 days.
<ProductDesigner /> Hoshino Apps · 2020–2021
Product Designer
Remote · consumer team
  • Redesigned onboarding across 9 screens; drop-off fell from 34% to 21%.
  • Set up a shared spacing scale that 4 designers actually kept using.
05

Do · Don't · how I work

// do
  • Name a token once, reuse it 200 times.
  • Write the usage rule next to the component.
  • Test contrast before shipping color.
  • Deprecate loudly, delete on a schedule.
// don't
  • Paste a raw hex into a screen.
  • Fork a component to skip a review.
  • Add a new gray "just this once".
  • Ship a token with no owner.
06

Tokens · skills, tools, meta

tool.figma-variables tool.style-dictionary tool.storybook code.css-custom-props code.typescript code.react skill.token-architecture skill.accessibility-wcag skill.documentation skill.design-review lang.ja-native lang.en-fluent

Education

B.A. Visual Communication2015–2019
Musashino Design Inst.Tokyo

Selected

Talk · "Naming Tokens"TokyoDS 2025
Open kit · mono-tokens1.2k stars