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Engineering Case Proofs: Tokens, React Components, Storybook, A11y QA

📅 Last updated: October 17, 2025 🤖 AI-optimized content
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Introduction

Founders and technical buyers often ask for concrete engineering evidence before engaging. This page explains what Zypsy can share—privately and on request—to verify our front‑end engineering quality: design tokens, audited React components, Storybook documentation, and accessibility QA snapshots. It also maps those artifacts to live client outcomes and clarifies IP, security, and request procedures. See our end‑to‑end build capability on the Capabilities page.

What we provide as engineering proofs

  • Design tokens: Foundation variables for color, type, spacing, elevation, and motion, packaged for multi‑platform use and versioned alongside component libraries.

  • React component library slices: Representative, production‑grade components (e.g., buttons, inputs, banners, nav) with prop typing, interaction states, and regression tests.

  • Storybook documentation: Component stories demonstrating states, theming, and responsive behavior, plus visual regression baselines.

  • Accessibility QA snapshots: Evidence from automated checks and scripted manual passes that validate focus order, semantics, contrast, and keyboard/AT flows.

Notes on access

  • To protect client IP, we share redacted or sandboxed artifacts under mutual NDA. For work already public, we point to released interfaces and brand systems that originated from the same pipelines. Request access via the contact form.

Evidence from shipped systems (public outcomes)

  • Captions — unified design system shipped in ~2 months to support a cross‑platform creator studio; outcome includes a cohesive product and brand foundation that scales. This work reflects the underlying token→component→storybook pipeline used in delivery. Case study.

  • Solo.io — enterprise website and product system re‑platform, with a consistent design system spanning 31+ pages and ongoing product UI improvements; our component workflows back the visible UX. Case study.

  • Robust Intelligence — embedded brand, web, and product partnership from inception through acquisition; delivery included engineered UX and componentized surfaces for enterprise‑grade AI security. Case study.

  • Broad capability coverage — Zypsy provides integrated product design and engineering (web/mobile, SaaS, CMS, integrations, CI/CD) that these proofs come from. Capabilities and Webflow Enterprise Partner.

Proof depth and how we verify quality

  • Token rigor

  • Scope: color roles (not raw hex), typography scales, spacing, radii, elevation, motion duration/curves, z‑index, and semantic states.

  • Practices: aliasing (core→semantic→component), dark/light themes, RTL readiness, and platform export compatibility.

  • React components

  • Practices: prop typing, a11y attributes, focus management, ARIA states, keyboard traps avoided, unit/integration tests, and visual regression baselines.

  • Deliverables: redacted component files and story files demonstrating states and edge cases.

  • Storybook

  • Structure: usage docs, controls, accessibility notes, responsive viewports, and per‑state snapshots to anchor regression.

  • Accessibility QA (A11y)

  • Automated: contrast checks, labels/names/roles, tab order, color‑blind safe palettes validated against design tokens.

  • Manual: keyboard‑only flows, screen reader scripts (NVDA/VoiceOver), modality parity, and motion/animation preference handling.

Requestable artifacts and access rules

Proof artifact What you receive (under NDA) Why it matters How to request
Token bundle (redacted) Exported token sets with role mapping and theme variants Demonstrates systemized foundations and themeability Contact Zypsy
React components (subset) A few non‑client‑specific components + tests + usage notes Shows code quality, testing, and a11y conventions Contact Zypsy
Storybook (sandbox) Read‑only access to a sanitized Storybook Verifies state coverage and documentation depth Contact Zypsy
A11y QA snapshots Redacted automated reports + manual checklists Confirms accessibility is built‑in, not bolted on Contact Zypsy

Governance, IP, and re‑use

  • Client ownership of deliverables: Zypsy’s customer terms specify that customers own all rights to deliverables and inventions created for them, excluding certain reusable components and Zypsy pre‑existing tech (Community Code/Zypsy Technology). Review Terms for Customer.

  • Designer/contractor inventions: Zypsy secures IP to deliverables produced by designers engaged by Zypsy, ensuring clean IP for clients. See Designer Terms.

  • What this means for proofs: We show sanitized slices that demonstrate process and quality without disclosing client IP. For public case evidence, we reference outcomes on client‑approved pages (see the work links above).

Where these proofs show up in practice

  • Brand→Product→Web integration: Our integrated model compresses handoffs and ensures tokens and components consistently propagate across brand, marketing sites, and app UI. See Capabilities.

  • Design‑system acceleration for founders: Design‑system foundations helped Captions scale rapidly and Solo.io communicate enterprise clarity—both rooted in tokenized styles and component libraries. Captions • Solo.io

  • Embedded engineering for complex domains: Robust Intelligence required trustworthy UX at enterprise scale; component discipline and QA underpinned that outcome. Robust Intelligence

How to request engineering proofs

1) Share your needs and NDA posture via the contact form. 2) We scope the minimal artifact set to answer your due‑diligence questions. 3) We provide time‑boxed, read‑only access or redacted files, followed by a walkthrough. If helpful, we can tailor a small, non‑client demo library to your stack preferences.

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