Full Stack Developer — Sydney, AU

Ibtehaz
Ali Chowdhury

I build production-grade web applications with modern tools. Focused on clean architecture, real-world impact, and shipping things that work.

See my workGet in touch →

Experience

Full Stack Developer Intern

at IPP Technologies

Jan 2026 — Present

  • Built a multi-tenant appointment booking system using Node.js, Express, MongoDB, DynamoDB, and Redis with dynamic slot generation, recurring bookings, and automated email notifications
  • Architected a Teams-like video conferencing app with WebRTC, Socket.io, and React — lobby waiting rooms, calendar scheduling, call recording, and multi-tenant RBAC
  • Developed DocForge, a multi-tenant document editing suite with .docx/.xlsx/.pptx editing via WOPI protocol, Markdown editing, three-tier billing, and subdomain-based tenant isolation
  • Owned full project lifecycle from architecture design to deployment across all three applications, producing technical documentation and presenting to stakeholders
Node.jsExpressReactWebRTCSocket.ioPostgreSQLMongoDBDynamoDBRedisPrismaMinIO

Freelance Full Stack Developer

at Architex

Feb 2026

  • Built a complete e-commerce platform from scratch for a streetwear brand using React, Firebase (Auth, Firestore, Storage, Cloud Functions v2), and Tailwind CSS with a real-time admin dashboard
  • Developed Cloud Functions for transactional emails (Nodemailer), secure account deletion (Admin SDK), and automated lead enrichment pipelines with Firestore triggers
ReactFirebaseCloud FunctionsTailwind CSSNodemailer

React Developer (Internship)

at QuickSite Guru

Jul 2024 — Oct 2024

  • Developed responsive React.js applications using TypeScript and ES6+, delivering reusable UI components with PWA functionality
  • Optimized performance through code splitting and lazy loading, collaborating with Agile teams to integrate frontend with RESTful APIs
ReactTypeScriptES6+PWAREST APIs

Cloud Engineer / Back-end Developer

at ARS Analytics

Sep 2021 — Sep 2022

  • Designed and deployed scalable Azure infrastructure using VMs, Azure SQL Database, and Cosmos DB, supporting multiple client applications with 99.9% uptime
  • Built secure RESTful APIs and microservices using ASP.NET Core with OAuth 2.0, rate limiting, and third-party integrations including payment gateways and CRM systems
  • Containerized applications using Docker and automated deployment pipelines via Azure DevOps Server with CI/CD workflows
  • Developed database schemas with stored procedures and indexing strategies, reducing query response times by 45%
ASP.NET Core.NETAzureDockerAzure SQLCosmos DBMongoDBOAuth 2.0

Back-end Developer

at Absolute Point

Jan 2021 — Jun 2021

  • Built backend infrastructure using Node.js, Express.js, and AWS with PostgreSQL and Redis caching for a Resource Management System supporting 100+ concurrent users
Node.jsExpressAWSPostgreSQLRedis
Full résumé →

About

I'm a Full Stack Developer with a Master's in Computer Science (Machine Learning & Big Data) from the University of Wollongong. My journey in tech started in Bangladesh and brought me to Sydney, where I've been building production-grade applications across the full stack.

Currently at IPP Technologies, I'm building multi-tenant platforms — from appointment booking systems and video conferencing apps to full office suites — owning the entire lifecycle from architecture design to deployment.

Here are some technologies I've been working with recently:

  • React.js / Next.js
  • TypeScript
  • Node.js / Express
  • ASP.NET Core
  • PostgreSQL / MongoDB
  • Docker / Azure / AWS

Projects

Healthcare Appointment Platform

Microservices-based healthcare platform with four .NET services following Clean Architecture, featuring patient management, doctor scheduling with Redis caching, and AI-powered prescription extraction.

.NET 9.0ReactPostgreSQLRabbitMQDockerPythonMinIORedisSignalR

Audio Spam Call Detection — Capstone

Real-time audio deepfake detection system with WebRTC peer-to-peer calling, Socket.io live analysis, and ML classification achieving 92% accuracy across 1,000+ samples.

Next.jsTypeScriptFlaskMachine LearningWebRTCSocket.ioTailwind CSSClerk

PCOS Fitness & Nutrition App

Mobile-first PWA for women with PCOS featuring AI-powered workout generation, symptom-based customization, and personalized exercise recommendations.

React.jsTypeScriptFirebaseMaterial-UIGoogle OAuthCloud Firestore

Architex — Streetwear E-Commerce

Complete e-commerce platform for a streetwear brand with React, Firebase, real-time admin dashboard, transactional emails, and automated lead enrichment pipelines.

ReactFirebaseCloud Functions v2Tailwind CSSNodemailerAdmin SDK

Stack

Frontend

React.jsNext.jsTypeScriptJavaScript ES6+Tailwind CSSBootstrapHTML5 / CSS3jQueryPWA

Backend

ASP.NET Core.NET FrameworkNode.jsExpress.jsPythonRESTful APIsWebSocketsSocket.ioWOPI Protocol

Cloud & DevOps

Microsoft AzureAWSFirebaseDockerAzure DevOpsCI/CD Pipelines

Databases

Azure SQLPostgreSQLMongoDBDynamoDBCosmos DBRedisMinIOPrisma ORMFirestore

Tools & Practices

GitAgile / ScrumMicroservicesMulti-Tenant ArchitectureWebRTCUnit TestingIntegration Testing

GitHub

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Contact

I'm looking for full-stack developer opportunities in Australia. Have a role, a question, or just want to connect? Drop me a line.