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.