professional·Polymath Services L.L.C.·Dec 2022 – Jun 2025

Learning Management System

Multi-tenant LMS commercialized on AWS

Overview

I engineered the LMS end-to-end within a multi-tenant Nest.js and Prisma backend paired with a React frontend. The product evolved from an internal tool into a commercial offering: React hosted on S3/CloudFront, Nest.js on AWS ECS, and PostgreSQL on RDS. Client onboarding and user management were key focus areas for growth.

Architecture

flowchart TB
  subgraph clients ["Clients"]
    Admin["Tenant admins"]
    Learners["Learners"]
  end

  subgraph aws ["AWS"]
    CF["CloudFront"]
    S3["S3 static React app"]
    ECS["ECS Nest.js API"]
    Prisma["Prisma ORM"]
    RDS[(PostgreSQL on RDS)]
  end

  Admin --> CF
  Learners --> CF
  CF --> S3
  S3 -->|"API calls"| ECS
  ECS --> Prisma
  Prisma --> RDS
  ECS -->|"Multi-tenant onboarding and user management"| RDS

Summary

A Learning Management System built in a multi-tenant architecture, first for internal use and later commercialized, with streamlined onboarding and user management on AWS.

What I worked on

Architected multi-tenant LMS structure using Nest.js, Prisma ORM, and React.
Streamlined client onboarding and user management to improve scalability.
Deployed and operated the Nest.js API on AWS ECS with React on S3/CloudFront and Postgres on RDS.
Designed database schemas and APIs for efficient data retrieval and frontend integration.

Results

Internal LMS successfully commercialized for external clients
Streamlined multi-tenant onboarding and user management
Production deployment on AWS with robust cloud hosting
Scalable schema and API foundation with Nest.js and Prisma