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Prahlad Singh — Resume

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Prahlad Singh — Full-Stack Developer

MERN / MEVNReact NativeReal-Time & Multi-Tenant SystemsGurgaon, Haryana, India

Full-stack developer specializing in MERN/MEVN with production experience in multi-tenant SaaS, JWT/RBAC security, and real-time systems (Socket.io, PeerJS, Redis), plus Java/Spring Boot. Comfortable end-to-end: MongoDB/MySQL schema design, REST APIs, React/Vue/React Native frontends, and Linux DevOps (Nginx, PM2, GitHub Actions). Currently building a healthcare platform with DICOM imaging, telemedicine, and Razorpay payments. Shipped 14 projects, including a Microsoft Store app and an npm CLI.

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Technical Skills

Frontend
React.js, Vue.js, Vuetify, React Native (Expo), Next.js, Redux Toolkit, Vuex, TanStack Query, JavaScript (ES6+)/TypeScript, Tailwind CSS, HTML5/CSS3, Vite, Monaco Editor
Backend
Node.js, Express.js, NestJS, Java, Spring Boot, Spring Security, Spring Data JPA, RESTful APIs, Socket.io, PeerJS (WebRTC), Redis, JWT, RBAC, PHP
Database
MongoDB, Mongoose, Aggregation Pipelines, Multi-Tenant Architecture, MySQL, Schema Design & Indexing
DevOps & Tools
Linux, Nginx, PM2, Docker, GitHub Actions (CI/CD), Git, SSH/SCP, SSL, Postman, Puppeteer, Cloudinary, Vitest, Electron
Publishing
Microsoft Store, Play Store, Android APK Distribution, npm Publishing, CLI Development (Ink)
Data Viz, AI & APIs
Chart.js, Three.js, D3.js, Gemini API, GitHub API, Razorpay, DICOM Imaging (DWV), OpenWeatherMap API, remove.bg, Cron Automation

Education

Master of Computer Applications (MCA)

Dr. A.P.J. Abdul Kalam Technical University2022 – 2024

Bachelor of Computer Applications (BCA)

Mahatma Jyotiba Phule Rohilkhand University2019 – 2022

Languages: English, Hindi  ·  Availability: Open to full-time opportunities

Experience

Lifelayer Health Solutions Pvt. Ltd.

Backend Developer → Full-Stack DeveloperMar 2025 – PresentGurugram, India
  • Built a large-scale multi-tenant healthcare platform (MEVN) with per-company MongoDB isolation, a connection manager, and a model factory pattern.
  • Developed a DICOM medical imaging viewer in Vue.js with multi-panel grids (1×1 to 2×4), per-panel DWV instances, and drag-and-drop series loading.
  • Built a production-grade telemedicine system using PeerJS, Socket.io, and Redis session persistence, plus real-time ambulance booking with live GPS tracking via Google Maps.
  • Integrated Razorpay payments (Transaction schema, webhooks) with Puppeteer PDF invoicing; designed JWT/RBAC auth across 5+ roles on indexed, HIPAA-aligned MongoDB schemas; managed VPS deployments (Nginx, PM2, GitHub Actions CI/CD).

Selected Projects

GathaLok — World Folklore Platform

Web, Android & Windows
  • Built a storytelling platform with 500+ stories across 20+ countries, a contributor workflow (drafts, admin review), an admin CMS, and JWT auth with 4 roles; published the desktop edition on the Microsoft Store.
  • Led a large-scale architecture migration from a state-wise to a country-wise data model across the entire application.
LiveMicrosoft StoreGitHub

Foldd — Wardrobe & Outfit Planning App

React Native
  • Built a full-stack Expo app with a Node/Express/MongoDB backend: outfit builder, laundry tracker, weather-aware suggestions (OpenWeatherMap), and a trip packing-list generator.
  • Built a Stats tab on MongoDB aggregation pipelines (wear timelines, cost-per-wear) with react-native-svg charts, plus remove.bg photo cleanup.
GitHub

Assessment Platform — Proctored Online Exams

  • Built three coordinated apps (Vue 3 + Vuetify admin, proctored candidate app with Monaco editor, Node/Express/MongoDB backend) with autosave, auto-submit timers, and webcam/screen recording.
  • Added copy-paste/devtools violation detection, bulk CSV/XLSX import, and a live progress dashboard over Socket.IO with optional Redis cache.
LiveGitHub

Expense Tracker — Spring Boot & React (TypeScript)

  • Built a Java 21 / Spring Boot 3 / MySQL backend with JWT refresh-token rotation, RBAC, and a Splitwise-style group system with a debt-simplification engine; added receipt OCR and PDF/CSV reports.
  • Wrote Mockito and Vitest unit tests; fully Dockerized with docker-compose for one-command startup.
LiveGitHub

Codebase Detective — Deterministic Codebase Analysis

  • Built a tool (ZIP or GitHub URL) producing architecture reports via Babel AST import resolution, a React Flow dependency graph, DFS circular-dependency detection, and git churn analysis; hardened against zip-slip/path traversal.
LiveGitHub

See all 14 projects →