Case Study C Spire

Building a Scalable
UX Design System

How structured workflows, collaborative tools, and research-driven methodologies deliver consistent, scalable, and user-friendly designs across multiple digital products.

Client C Spire
Role UX Designer / Manager
Service UX Design
Scope Enterprise Design System
C Spire website pages — UX design system case study

The Challenge

C Spire needed a scalable design system and a robust UX process to ensure consistency across multiple products, faster time-to-market, and improved usability aligned with best practices.

The challenge was to create a framework that combined design flexibility, developer collaboration, and data-backed decision-making, while maintaining a unified brand experience across all digital touchpoints.

"Create a framework that combined design flexibility, developer collaboration, and data-backed decision-making."

Our Approach

Our approach centered on three key pillars — User Flows & Collaboration, User Testing & Validation, and Research & Auditing. Each pillar was designed to reinforce the others, creating a holistic design process.

01

User Flows & Collaboration

Created detailed user flows in FigJam with developer leads

02

Testing & Validation

Early-stage usability testing before development begins

03

Research & Auditing

Baymard Institute standards and benchmark auditing

UX process board — sticky notes, wireframes and user flows

User Flows & Collaboration

Created detailed user flows in FigJam in partnership with developer leads. Designers mapped out screens while developers added back-end details like API and database connections. Updated flows with high-fidelity comps to provide an end-to-end view for business stakeholders.

  • Collaborative FigJam flows co-created with developer leads
  • Designers mapped screens while developers added API and database connections
  • Updated flows with hi-fi comps for complete stakeholder visibility
  • End-to-end documentation reduced miscommunication during development

User Testing & Validation

Conducted early-stage usability testing on comps and prototypes using UserTesting.com. Gathered actionable feedback before development began, reducing costly post-launch fixes. Shared results with cross-functional teams and tracked insights through analytics tools.

60% Reduction in user clicks
200% Increase in conversion rate
↓ Reduced post-launch fixes
UX team design session with wireframes and design system components

Research & Auditing

Leveraged Baymard Institute's research library and auditing tools to benchmark against industry best practices. Presented audit results to cross-functional teams and tracked completion through post-production analytics. Required all UX team members to complete Baymard Premium Certification.

  • Baymard Institute research library and auditing tools for benchmarking
  • Audit results presented to cross-functional teams for analysis
  • Post-production analytics tracked completion and progress
  • All UX team members completed Baymard Premium Certification

Building a Unified Design System

To address scalability and consistency, we developed a modular design system with reusable components that streamlined collaboration between designers and developers, a consistent visual language applied across all Horizon products, and flexibility to adapt to evolving business needs.

Horizon design system — typography, color tokens and component library

Impact

The new UX framework and design system delivered measurable benefits across all digital products.

◎

Minimized Design Inconsistencies

Unified patterns across multiple platforms eliminated visual drift.

⚡

Accelerated Product Releases

Reduced design and development cycles significantly.

✦

Improved User Experience

Data-driven decisions enhanced usability and customer satisfaction.

⬡

Scalable Foundation

Positioned C Spire for long-term growth and digital innovation.

Key Takeaways

01

Collaboration is critical

Integrating design and development early ensures clarity and efficiency throughout the product lifecycle.

02

Research-driven design wins

Leveraging Baymard standards and usability testing reduces risk and drives informed decisions.

03

Design systems enable scale

Modular components accelerate delivery and maintain consistency as products grow.