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Case Studies

Multi-tenant SaaS rebuild that took a fragile MVP to production

Case Study

Multi-tenant SaaS rebuild that took a fragile MVP to production

Rebuilt a working but brittle e-commerce platform that had outgrown its first version. New architecture handles multi-tenancy, structured catalog data, and a deployment pipeline that ships every day.

Client
Founder team — vertical SaaS
Industry
SaaS Rebuild
Duration
6 weeks
Before-and-after view of a SaaS dashboard, from a fragile MVP to a production-ready system

Outcome

6 wks

Rebuild to production

3.4×

Faster page loads

p95 LCP

0

Tenant data leaks

since rebuild

Daily

Deploy cadence

previously bi-weekly

Architecture

How the system fits together.

Multi-tenant architecture diagram showing tenant isolation, catalog service, and storefront rendering

The Problem

Where the engagement started.

The first version shipped in a weekend hackathon and survived 18 months of feature additions before the data model and deploy pipeline started fighting the team.

Onboarding a new tenant took three engineering hours of manual config and the storefront p95 LCP was over six seconds on real devices.

Our Approach

How we cut the scope and de-risked the build.

We replaced the data model with a tenant-isolated schema and a catalog service that serves both the storefront and an internal admin.

Storefronts now render server-side with cache rules per tenant and aggressive image optimization — the LCP target was set in week one and held throughout the build.

CI runs full test + preview deploys on every PR. Daily deploys to production became the default, not the exception.

The Outcome

What changed after the system shipped.

p95 LCP dropped from 6.1s to 1.8s on real-user devices.

Tenant onboarding moved from hours of manual work to a self-serve flow that finishes in under five minutes.

The team ships daily with confidence, instead of a bi-weekly merge-night.

Tech Stack

  • Next.js
  • TypeScript
  • Postgres
  • Prisma
  • Redis
  • Vercel
  • GitHub Actions

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