E-commerce Web Development Next.js PostgreSQL Projekt koncepcyjny

E-commerce platform for a sports industry client

We migrated a sports retailer from an ageing SaaS shop to a custom Next.js platform. Result: 2,300 online orders in the first 3 months.

2 300

Orders in 3 months

PageSpeed Mobile

-40%

Abandoned carts

4 tyg.

Delivery time

Problem

The old shop was holding back sales.

The client ran on a SaaS platform for 6 years. As the catalogue grew (1,200+ SKUs) the platform started causing problems: 5+ second load times on mobile, no ERP integration, limited customisation, and rising monthly fees.

The owner needed a platform that scales with the business without growing subscription costs.

Solution

A custom e-commerce platform built to spec.

Data migration

We imported 1,200 products, 8,000 orders and 5,000 customers from the old system into a new PostgreSQL database. Cleaning and normalisation — no order history lost.

Next.js + ISR frontend

Product and category pages rendered with ISR — speed like static, freshness like dynamic. Lighthouse 96 on mobile at staging.

Backend + integrations

Node.js API integrated with Przelewy24 (payments), InPost API (parcels) and BaseLinker (stock sync). Orders appear in the admin panel in real time.

Next.js 14

Node.js

PostgreSQL

Przelewy24

InPost API

BaseLinker

Vercel

"SouthWay delivered the platform on time and exactly to spec. The site loads faster than anything we had before."
– CEO, sports industry

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