Shipping a Custom E-Commerce Platform in 8 Weeks With 99.97% Uptime in Year One

A Kolkata-based specialty foods company had built a loyal customer base selling artisanal products through Instagram and third-party marketplaces. Marketplace commissions were eating 22–28% of revenue, and the brand had no direct relationship with most of its buyers. They needed an owned e-commerce channel — but off-the-shelf templates could not handle their subscription boxes, regional shipping rules, or inventory synced across a small warehouse and two retail locations.

The Challenge

The launch deadline was non-negotiable: a major festival season eight weeks away that historically drove 45% of annual revenue. The platform needed to support one-time purchases and monthly subscriptions, apply zone-based shipping rates, integrate with their existing payment gateway, and remain fast on mobile networks common in tier-2 cities.

Previous attempts to launch on Shopify had stalled because subscription logic and multi-location inventory required custom development that their in-house team did not have bandwidth to finish.

Our Approach

We scoped the MVP ruthlessly — every feature had to earn its place against the festival deadline. Creavate's design and engineering teams worked in parallel: UX defined checkout and subscription flows while backend architecture was finalised in the first sprint.

• —Built a Next.js storefront with server-side rendering for SEO and sub-2-second mobile load times
• —Developed a custom subscription engine with pause, skip, and swap functionality
• —Integrated Razorpay for UPI, cards, and wallets with webhook-based order confirmation
• —Connected real-time inventory across warehouse and two retail POS systems via a unified API layer
• —Implemented an admin dashboard for order management, subscription overrides, and shipping label generation
• —Load-tested for 10× normal traffic before festival launch with automated monitoring and alerting

The Results

The store went live on schedule with zero downtime during the festival peak. In the first year, the platform maintained 99.97% uptime. Direct-channel revenue grew to represent 38% of total sales — up from 0% — and average margin per order improved by 19% compared to marketplace channels.

Subscription retention after three months reached 72%, and the client captured 14,000 first-party email addresses in the launch quarter alone — an asset they had never owned before.