Available for select opportunities

I architect backend systems that carry a million conversations a day — and keep them running.

Senior Full Stack Developer based in Mohali, India, specializing in Node.js, React, and message-driven architecture. Over the last four years I've built the infrastructure behind high-volume WhatsApp Business automation — RabbitMQ-backed microservices, real-time agent dashboards — and the client-facing web products that sit on top of it.

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0 Years of experience

0 Messages/day processed by systems I architected

0 Database performance improvement delivered

0 Production platforms shipped for clients

About

Backend-minded, full stack in practice.

I started building software during my BCA at Himalayan Garhwal University and joined Virtuoso Netsoft Pvt. Ltd. in April 2022, where I've grown into a Senior Software Developer role. My work spans the full stack — React.js and Tailwind on the front end, Node.js, Express.js, and PHP on the back end — but the part I gravitate toward is what happens under the hood: queues, services, and the APIs that connect them.

That focus led me to architect an enterprise WhatsApp Business automation platform that now processes over a million messages a day, using RabbitMQ for asynchronous processing and Socket.io for real-time agent communication. Alongside the systems work, I also lead client onboarding — configuring webhooks, setting up WhatsApp Business API access, and getting production deployments live — so I stay close to how the software actually gets used.

Core strengths

Backend architecture & microservices
Real-time systems with Socket.io
Third-party & payment API integration
Query & performance optimization
Client onboarding & technical consulting

How I work

Problem-solving
Direct client communication
Cross-functional collaboration
Time management
Self-learning & adaptability

Experience

Where I've built this.

Senior Software Developer

Virtuoso Netsoft Pvt. Ltd.

Apr 2022 — Present

Design and build full-stack applications for enterprise clients, with particular ownership of backend architecture, third-party integrations, and production reliability.

Designed and shipped scalable full-stack applications (React.js, Node.js, Express.js, PHP, MySQL) delivering business solutions across multiple client projects.
Built secure RESTful APIs and integrated third-party services — Meta WhatsApp Business API, payment gateways, SMS/email providers — for reliable frontend-to-backend and external-system communication.
Optimized backend services and SQL queries, improving API response time by 30% and database performance by 40%.
Led client onboarding for WhatsApp Business API deployments, including webhook configuration and production rollout.
Owned production support: debugging, log analysis, incident response, and technical consultation for enterprise clients.
Collaborated with cross-functional teams across the full SDLC, from requirements gathering to deployment.

React.js Node.js Express.js PHP MySQL RabbitMQ Socket.io REST APIs Microservices Nginx Linux Git

Selected work

Projects I've shipped.

Featured project

Enterprise WhatsApp Business Automation Platform

Full Stack Developer / Project Lead

Enterprise clients needed to run WhatsApp-based customer communication at massive scale — reliably, in real time, and with automation to reduce manual agent workload.

Architected a microservices-based platform using RabbitMQ for reliable, asynchronous message processing.
Built a real-time agent communication dashboard with Socket.io for live conversation handling.
Integrated the Meta WhatsApp Business API through secure RESTful services.
Developed a RAG-based AI response system to automate replies and reduce manual agent workload.
Led client onboarding, webhook configuration, and production deployment.

1,000,000+messages / day in production

30%faster API response time

40%better database performance

React.js Node.js Express.js MySQL Tailwind CSS Socket.io RabbitMQ Microservices Meta WhatsApp Business API

Pearl Stay Apartments — Booking Platform

Apartment rental business needed a booking site with live availability across international markets. Built the front end in React.js with a PHP backend, integrated the Lodgify booking engine for real-time availability, pricing, and reservations, and implemented 5-language support.

React.js PHP MySQL Lodgify API

JPD Nonwoven — Corporate Website

A manufacturing company needed a professional web presence to showcase products and capture inquiries. Built with a React.js frontend and a Node.js/Express backend on MySQL, with secure contact forms and an SEO-friendly structure.

React.js Node.js Express.js MySQL

Institute of Legal and Policy Research — Content Platform

A legal and policy research organization needed a platform to manage events, publications, and institutional content. Built the UI with Tailwind CSS, backend services in Node.js for dynamic content and structured content modules, and optimized MySQL queries for data retrieval.

HTML Tailwind CSS Node.js MySQL

Konark Herbals — Website Maintenance & Optimization

An existing Laravel-based site needed ongoing reliability and performance work. Handled bug fixes, performance improvements, and feature enhancements, and optimized database queries and code structure for speed and stability.

PHP (Laravel) MySQL

Skills

The toolkit behind the work.

Languages

JavaScript (ES6+) PHP SQL HTML5 CSS3

Frontend

React.js Tailwind CSS Bootstrap

Backend

Node.js Express.js REST APIs

Database

MySQL

Messaging & real-time

RabbitMQ Socket.io

Architecture

Microservices MVC

Tools & infra

Git GitHub Linux Nginx PM2 Postman Let's Encrypt

Integrations

Meta WhatsApp Business API Payment Gateways SMS & Email APIs Lodgify API

Education

Bachelor of Computer Applications (BCA)

Himalayan Garhwal University, Uttarakhand

2018 — 2021

Contact

Have an interesting problem to solve?

Let's build something meaningful.

ashusaini90254@gmail.com

+91 80590 18014 LinkedIn Mohali, Punjab, India