From 34 to 90: How Performance-First Design Transformed Callstack's Digital Presence
Completely redesigned and rebuilt Callstack's website with a performance-first approach, delivering measurable business results including a 65.7% organic traffic increase in just 10 days post-launch.
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project summary
Callstack needed a complete website overhaul to replace their outdated, slow-performing site that poorly represented their technical expertise. The project involved redesigning the entire user experience, restructuring content architecture, implementing a robust CMS system, and ensuring top-tier performance standards while maintaining their brand identity and technical credibility.
Company description
Callstack is a leading React Native development consultancy specializing in mobile app development, performance optimization, and brownfield migrations. Known for their significant contributions to the React Native open-source ecosystem, they maintain popular libraries like Repack and Reassure, and regularly speak at major tech conferences. The company serves enterprise clients and startups alike, offering services from consulting to full product development.
Challenge
Approach
We started with a comprehensive content audit and wireframing process, then moved to a component-based design system using Relume for speed and consistency. The development focused on performance optimization, implementing proper SEO structure, and creating a flexible CMS that could handle their diverse content types. We used Webflow for easy content management while ensuring all technical requirements were met, including careful redirect mapping to preserve SEO value.
ResultS
The results spoke for themselves within days of launch. Organic traffic surged 65.7% in just 10 days, while organic keywords grew 17.7% overall with 19.1% now ranking in top 10 positions. Technical performance improved dramatically - Lighthouse scores jumped from 34 to 90, accessibility improved from 90 to 94, and SEO performance hit a perfect 100. We successfully organized over 1,250 CMS items across 22 collections, making content management intuitive for their team while preserving all legacy content through strategic redirect mapping.
awards & recognition
Details
Industry
Scope
Duration
6 weeks
Stage
Established React Native consultancy and open-source contributor
website
Available for Q3
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