Available for new projects

Arya Kumar
ShastreeFull Stack Engineer

I build scalable, production-grade web applications — from real-time platforms to payment systems — using the MERN stack, Node.js, and modern cloud infrastructure.

ReactNext.jsNode.jsMongoDBWebRTCSocket.ioJava

About

Self-taught.
Obsessively craft-focused.

Developer from Bhubaneswar, Odisha. I went from C fundamentals to building real-time video calling platforms and payment systems — entirely through relentless self-study and shipping real products.

My approach is simple: understand the problem deeply, architect it cleanly, and build it to last. I care about performance, maintainability, and the experience of everyone who touches the software — users and engineers alike.

5+Production apps shipped and maintained
6Certifications earned across platforms
3Real-time platforms built from scratch
2+Years of consistent self-driven learning
Arya Kumar Shastree

Location

Bhubaneswar, Odisha 🇮🇳

Skills

The full stack, top to bottom.

Every tool chosen for a reason — not for the resume, but because it solves the problem best.

Languages

JavaScriptJavaPythonC

Frontend

ReactNext.jsTailwind CSSHTML5 / CSS3

Backend

Node.jsExpress.jsREST APIsWebSockets

Database & Cloud

MongoDBMySQLMongooseCloud Basics

Realtime & Media

Socket.ioWebRTCSTUN / TURN

DevOps & Tooling

Git / GitHubDockerLinuxPostman

Projects

Things I've built.

Production applications, not side toys. Each one solving a real problem end to end.

Real-time Communication

Real-Time Chat Application

Full-featured messaging platform with bi-directional communication via Socket.io — private rooms, typing indicators, read receipts, and live presence tracking. Architected for thousands of concurrent users with horizontal scaling in mind.

ReactNode.jsSocket.ioMongoDBExpress

E-Commerce

E-Commerce Platform

End-to-end luxury e-commerce experience — product catalog, cart, checkout, order tracking, and a full admin dashboard. Mobile-first, fast, and conversion-optimised from day one.

Next.jsMongoDBTailwind CSSNode.js

Fintech Integration

Payment Gateway Integration

Production-grade multi-provider payment flow with Razorpay and Stripe. Webhook verification, idempotent transactions, refund handling, and a full audit log. PCI-aware architecture throughout.

Node.jsRazorpayStripeExpressMongoDB

Video Communication

WebRTC Video Calling Platform

Peer-to-peer video calling with WebRTC, STUN/TURN server integration, screen sharing, and multi-participant room management. Handles NAT traversal and network topology edge cases cleanly.

WebRTCSocket.ioNode.jsReact

Healthcare SaaS

Healthcare Appointment System

Full clinic management system — doctor schedules, patient records, smart booking engine, automated email reminders, and admin controls. Designed for real clinical workflow, not demo scenarios.

ReactNode.jsMongoDBNodemailerExpress

Experience

A trajectory built on shipping.

2026 – Present

Freelance Full Stack Developer

Independent · Remote

Building production applications for clients across e-commerce, healthcare, and fintech. End-to-end ownership from architecture to deployment.

2025

Backend & APIs Specialization

Self-Directed

Deep focus on Node.js, REST API design patterns, JWT authentication, MongoDB aggregation pipelines, and real-time systems with WebSockets.

2024

Frontend & React Development

Self-Directed

Transitioned from static HTML/CSS to component architecture with React. Adopted Tailwind CSS and Next.js. Shipped first full-stack applications.

2023

Programming Foundations

Bhubanswar, Odisha

Started with C and Java. Built a rigorous base in data structures, OOP, and algorithms that still informs how I think about systems today.

Services

What I can do for you.

End-to-end engineering for teams who need someone who can own the problem, not just a task.

Frontend Engineering

React and Next.js applications with performance-first architecture, accessibility, and pixel-precise UI implementation.

Backend & API Design

Scalable Node.js APIs with clean architecture, thorough auth, database design, and production-ready error handling.

MERN Stack Development

Full-stack product development from zero. MongoDB, Express, React, Node.js — the complete package, delivered as a working system.

Payment Integrations

Razorpay and Stripe payment flows with webhooks, idempotency, refunds, and reconciliation logic built in from the start.

Real-Time Systems

WebSocket-based chat, live collaboration, and WebRTC video calling infrastructure — built for reliability at scale.

Consulting & Architecture

Technical review, stack decisions, and codebase audits for teams who want to ship faster without accumulating debt.

Contact

Let's build something exceptional.

Have a project in mind or looking for an engineer who can own the problem end to end? I'm available for freelance work, long-term contracts, and consulting.

Available for freelance and full-time opportunities.