A venture-backed SaaS company

We re-architected a slow, single-page product into a server-rendered, multi-tenant Next.js platform on Postgres — built to stay fast as tenant count and traffic climb.

Next.js · SaaS · Postgres · Architecture

See our High-Performance SaaS practice
app.firstsoft.dev
Core Web Vitalsall green
LCP
0.9s
INP
48ms
CLS
0.01
p95 response · last 7 daysms
1000
day 1: 40 msday 2: 55 msday 3: 48 msday 4: 70 msday 5: 62 msday 6: 58 msday 7: 64 ms
p95 < 200ms under loaduptime 99.99%

The problem

Their existing stack buckled under concurrent tenants: load times crept past several seconds, every new feature shipped slower than the last, and the architecture made strict tenant isolation hard to guarantee.

  1. 01

    We modelled strict tenant isolation at the database layer so data could never leak across accounts.

  2. 02

    We rebuilt the front end on server-rendered Next.js, streaming the heavy views so first paint stayed instant under load.

  3. 03

    We added a typed, end-to-end data layer and CI performance budgets so the team could ship confidently without regressions.

The outcome

A server-rendered, multi-tenant platform the team can extend safely — faster pages, cleaner data boundaries, and a release pipeline that catches issues before users do.

One senior team, end to end. Tell us what you're building and we'll architect the path to ship it.