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SaaSPlatform EngineeringDevOpsDesign

Full-stack platform rebuild for a B2B SaaS product

Client: US B2B SaaS CompanyDuration: 10 monthsTeam: 5 engineers

10x

Faster feature delivery

99.95%

Uptime (from 97%)

3s

Avg page load (from 12s)

0

Weekend deploys needed

The challenge

A 7-year-old SaaS product had accumulated so much technical debt that shipping new features took months. The monolithic PHP backend couldn't scale, the frontend was jQuery spaghetti, and deployments required a full weekend.

Our solution

We rebuilt the platform incrementally: Next.js frontend, Node.js microservices backend, PostgreSQL + Redis. Strangler fig pattern — we migrated feature by feature while keeping the old system running. Full CI/CD pipeline with automated testing, blue-green deployments, and infrastructure as code.

Key highlights

1

Strangler fig migration

Feature-by-feature swap with zero downtime

2

CI/CD pipeline

Blue-green deploys, automated testing on every PR

3

Performance gains

Page load dropped from 12s to 3s average

4

Infrastructure as code

Terraform + Docker for reproducible environments

Tech stack

Next.jsNode.jsPostgreSQLRedisDockerGitHub ActionsAWS

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