Building a Modern E-commerce Platform
Rebuilding the checkout for 4x the traffic, without 4x the team.
Overview
Northfield Retail Group came to us with a storefront that had outgrown its architecture. Seasonal traffic spikes were causing checkout failures, and the internal team had no clear roadmap for scaling ahead of a major expansion into three new markets.
The Challenge
The client needed a scalable platform capable of handling increasing traffic, but the existing monolith made every release risky and slow.
- ›Checkout error rate spiked above 8% during peak sale events
- ›Deploys took 45+ minutes and required a full site freeze
- ›No clear separation between storefront, inventory, and fulfillment logic
The Solution
We developed a modern application focused on performance and usability, splitting the monolith into clear service boundaries without a disruptive rewrite.
- ›Migrated the storefront to a server-rendered Next.js app with edge caching
- ›Introduced a queue-based inventory sync to remove race conditions at checkout
- ›Built a design system so new markets could launch pages without new code
Results
The platform improved performance and increased customer engagement, with the client's next seasonal peak running without a single checkout incident.
99.98%
Checkout uptime during peak sale
1.2s
Median page load, down from 4.1s
+31%
Conversion rate, quarter over quarter
“We stopped dreading Black Friday. The team gave us a platform we could actually plan a business around.”
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