A Promising Marketplace Was Leaving Revenue on the Table
Our client had built an initial marketplace on WooCommerce that worked for their first 50 vendors. But with growing traffic, the platform buckled. Page load times exceeded 6 seconds, search was broken, cart abandonment hit 82%, and the vendor onboarding process took weeks of manual work. They needed a ground-up rebuild to scale.
82% Cart Abandonment
Slow checkout, limited payment options, and poor mobile UX were killing conversions.
6+ Second Page Loads
WooCommerce couldn't handle 2M+ SKUs. Search was slow, filtering was broken.
Manual Vendor Ops
Onboarding new vendors took 2+ weeks of manual catalog import and account setup.
A Headless Commerce Platform Built for Scale
We rebuilt the entire platform as a headless commerce architecture — Next.js frontend for lightning-fast pages, Elasticsearch for sub-100ms search across 2M+ products, and a custom vendor portal that automated onboarding from weeks to hours.
Next.js Headless Frontend
Server-side rendered product pages with ISR, achieving sub-1s LCP. Responsive across all devices with a mobile-first checkout flow.
AI-Powered Search & Discovery
Elasticsearch with ML-ranked results, typo tolerance, faceted filtering, and personalized recommendations driving 45% of revenue.
Optimized Checkout
Single-page checkout with Stripe, Apple Pay, Google Pay, and buy-now-pay-later. Address autocomplete and saved payment methods.
Self-Serve Vendor Portal
Automated onboarding with bulk CSV/API catalog import, real-time analytics dashboard, and automated payout scheduling via Stripe Connect.
Tech Stack
Development Timeline
6 months from kickoff to launch, with zero downtime migration from the legacy WooCommerce platform.
Discovery & Data Audit
Analyzed 2M+ product records, mapped vendor workflows, audited conversion funnel, and designed new information architecture.
Core Platform & Search Engine
Built Next.js storefront, Elasticsearch indexing pipeline, product catalog API, and real-time inventory sync.
Checkout & Payments
Single-page checkout, Stripe Connect multi-vendor payouts, Apple/Google Pay, Klarna integration, and tax automation.
Vendor Portal & Analytics
Self-serve vendor dashboard, bulk product import, real-time sales analytics, automated payout scheduling, and review system.
Migration, QA & Launch
Zero-downtime data migration from WooCommerce, load testing to 10x traffic, SEO redirect mapping, and phased rollout.
Measurable Impact
The new platform paid for itself within the first quarter post-launch.
“We went from a WooCommerce site that crashed during sales events to a platform handling Black Friday traffic without breaking a sweat. Revenue tripled in 6 months. Codazz delivered exactly what they promised.”
CEO & Co-FounderMulti-Vendor Marketplace, Los Angeles
Scale Your E-Commerce Business.
Whether you're migrating from a legacy platform or building a marketplace from scratch, we have the commerce engineering expertise to deliver.
