Hi, my name is

Ratul Koley.

I am a Full Stack Developer and Team Lead specializing in building robust, enterprise-scale backends using .NET Core and Microservices, alongside modern, high-performance web frontends in Angular and React.

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Core Competencies

Backend Architecture

.NET Core Web API, C#, Node.js, Express.js, Microservices, Python

Frontend Development

Angular, React.js, React Native, JavaScript (ES6+), HTML5, CSS3

Databases & Architecture

SQL Server, MySQL, PostgreSQL, Stored Procedures, System Design

DevOps & Infrastructure

Azure, Docker, Linux, CI/CD Pipelines, SignalR, WebSockets, Git

Featured Projects

Enterprise SaaS / Medical

Hospital Management System (HMS)

Multi-tenant microservices architecture serving 10+ hospitals. Features secure data handling, custom LIS hardware communication integrations, and optimized Stored Procedures.

.NET 8 MySQL SignalR Azure

Web Platform / AI

MAPS Edu Global Platform

Global education application hosting 5,000+ users. Integrated real-time recruiter notifications, secure CMS storage systems, and an AI-driven OCR form parsing engine.

.NET 9 Angular SQL Server AI OCR

Real-time Operations

Ambulance Fleet Application

High-performance backend API system designed from scratch to ingest, store, and process live geospatial tracking coordinates for rapid emergency dispatch operations.

Node.js Express.js MySQL