Subang Jaya, Malaysia

Saifuddin Tipu

Senior Software Developer

6+ years building enterprise-grade platforms — from resolving production crises to architecting systems that serve 10,000+ users daily.

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What I Bring

The things I care about and do well

⚡

Backend Architecture

NestJS · Redis · BullMQ · PostgreSQL · MongoDB

  • ▸Event-driven microservices at scale
  • ▸WebSocket & real-time systems
  • ▸Production incident resolution
📦

Open Source Author

3 npm packages · OSS contributor

  • ▸nestjs-webhook-sender
  • ▸nestjs-socket-presence
  • ▸express-correlation-context
  • ▸Contributed fix to BullMQ (15k★)
🧪

Test-First Engineering

Jest · Supertest · nock

  • ▸Unit, integration & E2E coverage
  • ▸HTTP mocking with nock
  • ▸BullMQ & Redis test patterns
🚀

Production Proven

6+ years · 10,000+ DAU systems

  • ▸Zero-downtime data migrations
  • ▸Memory leak & CPU crisis fixes
  • ▸Multi-tenant SaaS platforms

Featured Projects

A selection of recent work

express-correlation-context

npm

Published npm library — Express middleware for automatic correlation ID propagation via AsyncLocalStorage. Access request metadata anywhere in the call stack without passing req around. Zero dependencies.

TypeScriptExpressNode.jsnpmOpen SourceMiddleware

nestjs-webhook-sender

npm

Published npm library — production-ready outbound webhook delivery with HMAC signing (Stripe/GitHub/Standard), BullMQ retry queue, exponential backoff, dead-letter queue, and delivery logs.

TypeScriptNestJSBullMQRedisnpmOpen Source

nestjs-socket-presence

npm

Published npm library — drop-in NestJS module for real-time user presence tracking via Socket.IO and Redis. Multi-socket, TTL expiry, room presence, bulk queries.

TypeScriptNestJSSocket.IORedisnpmOpen Source

AI SaaS Starter Kit

Multi-tenant SaaS boilerplate with Claude AI streaming, usage metering, plan limits, and Stripe billing

TypeScriptNestJSNext.js 15Claude AIPostgreSQLJWT

Blog Platform

Full-stack blog with Next.js 15 ISR, TipTap rich-text editor, Algolia search, and ISR revalidation webhook

TypeScriptNestJSNext.js 15AlgoliaTipTapPostgreSQL

Real-time Chat App

Full-stack chat app with Socket.io rooms, Redis presence tracking, JWT auth, and dark React UI

TypeScriptNestJSSocket.ioRedisMongoDBReact

E-commerce API

Production-ready REST API with cart, orders, Stripe payments, BullMQ email queue, and Redis caching

TypeScriptNestJSPostgreSQLRedisBullMQStripe

More Projects

URL Shortener

URL shortener with Redis caching, click analytics, JWT auth, rate limiting, and scheduled cleanup

TypeScriptNestJSPostgreSQLRedisJWTSwagger

AI Policy Helper

Local-first RAG app for answering company policy questions with source citations

PythonFastAPINext.jsQdrantRAG

Task Manager API

REST API with real-time Socket.io updates, advanced filtering, soft delete, JWT refresh rotation

TypeScriptNestJSSocket.ioMongoDB

Ticketing System

NestJS + MongoDB + Redis backend containerised with Docker, deployable to GCP Cloud Run

TypeScriptNestJSMongoDBRedisDocker

Webhook Notification System

Webhook-driven notification system with Next.js, Express, and MongoDB

Next.jsExpressMongoDBWebhooks

Next.js Dashboard

Next.js + PostgreSQL dashboard — live on Vercel

Next.jsPostgreSQLTypeScript

Tech Stack

Technologies I work with

Backend

Node.jsExpress.jsNestJSSocket.IOREST APIsWebSocketPHPPythonPM2Event-Driven ArchitectureRedisRabbitMQ

Frontend

AngularTypeScriptJavaScript (ES6+)ReactVue.jsNext.jsHTML5CSS3jQueryBootstrap

Database

MongoDBMySQLMSSQLFirebasePostgreSQL

DevOps

LinuxApacheNginxDockerDocker ComposeGitGitHubGitLabCI/CDGoogle CloudAlibaba Cloud

Integrations

WhatsApp Business APIFacebook Messenger APITwitter APIInstagram APILINE Messaging APIZoho CRMFreshdeskSalesforce

AI & Tools

Claude AIClaude Code CLIChatGPTGeminiRAGQdrantFastAPI

Experience

Sep 2020 – Present

Lead Software Developer

Accordia Global Sdn Bhd · Subang Jaya, Selangor, Malaysia

  • ▸Lead end-to-end technical architecture for enterprise omnichannel platform integrating WhatsApp, Facebook, Twitter, LINE, and Instagram with real-time chat, automated routing, and intelligent agent assignment for 10,000+ daily active users.
  • ▸Diagnosed and resolved production MongoDB crisis: identified duplicate PM2 processes consuming 8GB memory; reduced CPU from 100% to <15%, restoring full platform stability.
  • ▸Architected and executed data archiving pipeline migrating 2M+ chats, 500K+ customers, and 1M+ social messages — 45% query performance improvement with zero downtime.
  • ▸Identified and fixed race conditions in chat timeout controller causing simultaneous message floods; implemented proper async timer sequencing with 5–10–15 min escalation and state management.
  • ▸Built campaign management system enabling marketing teams to send personalized WhatsApp templates to 5,000+ customers with scheduling, template management, and delivery tracking.
  • ▸Developed bidirectional CRM integrations with Zoho, Freshdesk, and Salesforce, automating ticket creation and reducing manual data entry by 80%.
  • ▸Deployed Angular + Node.js e-ticketing system reducing average resolution time from 24 hours to 6 hours (75% improvement).
  • ▸Profiled and resolved Node.js memory leaks through connection pooling optimization, orphaned WebSocket cleanup, and proactive monitoring instrumentation.

Dec 2018 – Aug 2020

Software Developer

Neuon AI Sdn Bhd · Kota Samarahan, Sarawak, Malaysia

  • ▸Architected multi-tenant HR portal with corporate subdomain registration and cross-platform mobile apps (Android/iOS WebView), onboarding 15+ corporate clients for attendance management.
  • ▸Built industrial batching plant software (VB.NET, MSSQL) with Microsoft Sync Framework, enabling offline-first data synchronization for manufacturing environments.
  • ▸Developed Python REST APIs for real-time emotion detection ML pipeline, processing video streams with <100ms latency for AI research applications.
  • ▸Created stock monitoring and invoice management system with desktop (VB.NET) and web interfaces, automating inventory tracking for 50+ SKUs.

Education & Development

2019 · CGPA 3.24 / 4.0

Bachelor of Computer Science with Honors (Software Engineering)

University Malaysia Sarawak (UNIMAS)

Professional Development

  • Machine Learning

    AgTech AI Hackathon

    2019

  • Web Application Development

    Microsoft Imagine

    2018

  • Digital Marketing

    Shaw Academy

    2016

  • IELTS

    British Council

    2015

Get in Touch

Open to new opportunities. Feel free to reach out.

saifunimas@gmail.comGitHubLinkedIn

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