01 — WHOAMI

Prahlad
Singh.

Full-Stack Developer · MERN / MEVN · Real-time systems that stay up

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Projects Shipped

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Technologies

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Live Apps

02 — ARSENAL

Tech
Stack.

Tools I reach for — and the ones I've earned

Frontend

Vue.js

React.js

React Native

Next.js

JavaScript

HTML5

CSS3

Tailwind

Vuex

Vite

Vuetify

Monaco Editor

Backend

Node.js

Express.js

NestJS

PHP

Java

Spring Boot

Spring Security

Socket.io

PeerJS

Redis

JWT

Razorpay

Database

MongoDB

MySQL

Mongoose

Spring Data JPA

Multi-tenant

Aggregation

Indexing

DevOps, Tools & APIs

Linux

Nginx

PM2

GitHub Actions

Git

SSH/SCP

SSL

Cloudinary

Postman

Puppeteer

OpenWeatherMap

remove.bg

npm Publishing

CLI (Ink)

Google Play Store

Microsoft Store

Electron

Chart.js

Three.js

Gemini API

GitHub API

D3.js

TypeScript

TanStack Query

Vitest

03 — EXPERIENCE

Where I've
Shipped.

Production code. Real users. Actual problems solved.

CURRENT ROLE

Lifelayer Health Solutions Pvt. Ltd.

Backend Developer → Full-Stack

Mar 2025 – Present Gurugram, India

Multi-tenantDICOM ViewerTelemedicinePaymentsAuth / RBACDevOps

Vue.jsNode.jsMongoDBSocket.ioPeerJSRedisRazorpayPuppeteerJWTNginxPM2GitHub Actions

Built a large-scale multi-tenant healthcare platform (MEVN) with per-company MongoDB database isolation, connection manager, and model factory pattern.
Developed a DICOM medical imaging viewer in Vue.js with multi-panel grid support (1×1 to 2×4), per-panel DWV instances, and drag-and-drop series loading.
Built production-grade telemedicine video system using PeerJS, Socket.io, and Redis session persistence.
Implemented ambulance booking and live GPS tracking with real-time Socket.io + Google Maps integration.
Integrated Razorpay payment gateway with Transaction schema, Puppeteer PDF invoicing, and webhook handling.
Designed JWT authentication with RBAC across 5+ roles; HIPAA-aligned MongoDB schemas with indexing.
Managed VPS deployments: Linux, Nginx reverse proxy, PM2 process management, CI/CD via GitHub Actions.

Independent — Freelance & Personal Projects

Full-Stack Developer

Ongoing

WebMobileDesktopCLI

React NativeNode.jsMongoDBSpring BootGoogle PlayNginxGitHub Actions

Designed, built and shipped 14 full-stack projects across web, mobile, desktop and CLI.
Published apps to Google Play and the Microsoft Store, with self-hosted APK downloads and privacy policies.
Run self-hosted VPS deployments with Nginx and GitHub Actions auto-deploy, including this portfolio.

04 — PROJECTS