A production B2B SaaS ERP serving 500+ healthcare orgs with real-time operational and KPI data at scale.
A microservice-based B2B SaaS ERP (MERN + AWS) powering 500+ healthcare organizations, with 24+ features, real-time dashboards and sales trackers, hardened by JWT auth and automated testing across 750+ CI/CD deployments.
System Architecture
· how the system runs end to end
500+ orgs hit a JWT-secured gateway that fans out to 12+ microservices over MongoDB and PostgreSQL, shipped via 750+ CI/CD runs.
The Problem
Healthcare organizations needed a reliable, fast, multi-tenant ERP for day-to-day operations and analytics, shipped continuously without breaking production.
What I Engineered
Architected 12+ microservices powering a production B2B SaaS ERP serving 500+ healthcare organizations.
Championed 750+ CI/CD deployments with DevOps practices for dependable, continuous releases.
Designed and launched 24+ features including real-time dashboards and sales trackers.
Improved API performance by 60% through query optimization, indexing and pagination across MongoDB and relational data.
Built secure MERN applications with JWT authentication and reduced bug reports by 50% via automated testing.
Impact & Scale
500+ organizations served in production
60% faster APIs and 45% faster end-user experience
50% fewer bug reports via automated testing
750+ dependable CI/CD deployments
Organizations500+
Deployments750+
Microservices12+
Engineering Decisions
· why it's built this way, and the tradeoffs
01
Decomposed the platform into 12+ focused microservices over a shared monolith.
Independent services let 24+ features ship on their own cadence to 500+ orgs without one release train blocking everything. The operational cost of running many services was absorbed by CI/CD automation.
02
Won latency back through indexing and query tuning before scaling hardware.
The 60% API improvement came from indexes, query optimisation and pagination across MongoDB and relational data: a cheaper, more durable fix than adding infrastructure to mask slow queries.
03
Gated every one of 750+ deploys behind automated tests.
Continuous deployment to production healthcare tenants only works if releases are safe by default. Test gates cut bug reports 50% and let a small team ship continuously without breaking production.