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Senior Full-Stack Developer | AI/LLM · AWS · React · Node.js Experiences: - Working on migrating 10+ million user profiles into another system - Experience in develop a frontend system (ReactJS) that able to serve for millions of user - Experience in building multiple REST API using different framework such as Typescript nodejs, PHP laravel, Java Spring, C# dotNet to consumed by frontend team - Developed downtime page (ReactJS) that will shown up during system maintenance (combination of cloudflare worker, AWS cloudfront and AWS S3) - Implemented pub/sub design pattern on AWS (SNS, SQS, Lambda) to handle on data sync between new and old system - Developed backend admin system (C# dotNet MVC) for CS to perform their daily jobs - Developed mobile games (Unity3D, cocos2D) that are launched on china market that bring in a huge revenue to company - Maintain and enhance existing mobile app that doing car selling (Same as carlist.my) - Worked with analytics team to implement data tracking (omniture, hotjar, tealium) to better understand user behaviour - Implemented monitoring tools (datadog, newrelic, logentries) into existing system for better visualisation on system health - Developed LLM-powered applications using LangChain and LangGraph, implementing RAG architecture with vector databases, integrating with WhatsApp, and securing authentication via Auth0 (OAuth2/JWT) Tech Stack: Frontend: ReactJS, AngularJS Backend: Node.js, Laravel, .NET, Spring Boot Languages: TypeScript, PHP, Java, C# Cloud & DevOps: AWS, Cloudflare, CI/CD AI / LLM: LangChain, LangGraph, RAG Architecture Architecture: Microservices, Event-Driven Systems, REST APIs

Senior Full-Stack Developer with experience across the entire software lifecycle—from requirement engineering and system architecture to frontend development and cloud deployment. Proven ability to work effectively as an independent developer or as a technical lead for specific modules. Technical Stack Frontend: Next.js, React, Angular, TypeScript Backend: NestJS, FastAPI, Spring Boot, Node.js Cloud/DevOps: AWS (Fargate, S3, EC2), Docker, Kubernetes, Nginx, CI/CD Databases: PostgreSQL, Redis, MongoDB (Vector Search/RAG), Qdrant Specialized Experience Microservices: Designing and managing distributed, high-concurrency architectures. Automation & Scraping: Building distributed web crawlers (Scrapy/Playwright) and automated e-KYC/verification systems. AI Integration: Implementing RAG models, LangChain, and machine learning model productionalization. Lifecycle Management: Handling projects from initial requirements through to production-scale deployment and maintenance. Qualifications 4 Years of Professional Experience as a lead developer on high-scale projects. Master of Computing (Research) — Multimedia University B.S. in Computer Science (Honors) — Multimedia University

Are you looking to build a high-performance SaaS platform, automate a complex supply chain, or integrate secure, production-ready AI into your business workflow? Many developers can write code, but very few understand how to seamlessly blend cutting-edge AI/ML systems with scalable, enterprise-grade architecture while ensuring strict data security (HIPAA, PCI-DSS). I am a Full-Stack Developer and AI/ML Engineer with extensive experience architecting end-to-end solutions for SaaS, Supply Chain, Healthcare (HIS/HMS), and custom ERP systems. Whether you need to build an MVP from scratch or scale an existing enterprise platform, I deliver clean, maintainable code and robust infrastructure. 🚀 Core Expertise & How I Can Help You: AI/ML & GenAI Integration: Building intelligent RAG systems, custom chatbots, and LLM-powered workflows using OpenAI, Anthropic, LangChain, and Vector Databases (Pinecone, Qdrant). Robust Backend & Architecture: Designing secure, high-throughput microservices and APIs using Node.js (NestJS), Python (FastAPI/Django), and PHP, backed by PostgreSQL, MongoDB, or Redis. Modern, Responsive Frontends: Crafting seamless web and mobile interfaces using React, Next.js, Angular, Vue.js, and React Native. Cloud, DevOps & Compliance: Deploying production-ready applications on AWS/GCP/Docker with CI/CD pipelines, keeping security and regulatory standards (HIPAA, GDPR) at the forefront. 🛠️ Technical Snapshot: Frontend: React, Next.js, Angular, Vue.js, React Native, Tailwind CSS Backend: Node.js (NestJS/Express), Python (FastAPI/Django), PHP, Java AI/ML: LLMs, LangChain, Vector DBs, Prompt Engineering, RAG Systems Cloud & Databases: AWS, GCP, Docker, Kubernetes, PostgreSQL, MySQL, MongoDB, Redis Let’s build something scalable. Click the "Invite to Job" or "Hire" button on the top right, and let’s discuss how we can bring your project to life.

Full Stack .NET Developer with 7+ years of experience building scalable web applications, business platforms, and cloud-based solutions using ASP.NET Core, C#, SQL Server, React, Vue.js, and Microsoft Azure. I specialize in: ✅ Enterprise web applications with complex business workflows ✅ Custom CRM & ERP systems development ✅ High-performance REST APIs and backend services ✅ Cloud-native applications deployed on Microsoft Azure ✅ Modern frontend development with React, Vue.js & Angular ✅ Database architecture, optimization & reporting solutions 🔧 What I have shipped: • Developed a custom ERP platform that automated inventory management, order processing, and financial reporting, significantly reducing manual operational workload. • Built secure ASP.NET Core Web APIs integrated with third-party payment gateways, external business services, and enterprise systems. • Engineered a cloud-hosted CRM solution with role-based access control, customer tracking, workflow automation, and real-time reporting dashboards. • Delivered modern single-page applications using React and Vue.js, improving user experience and application responsiveness across desktop and mobile devices. • Designed and optimized SQL Server databases, stored procedures, and reporting systems for high-volume business applications handling large datasets. • Deployed and maintained production applications on Microsoft Azure using App Services, Azure SQL Database, Storage Accounts, and CI/CD pipelines. 🛠 Technologies I work with daily: Backend: ASP.NET Core, ASP.NET MVC, C#, .NET Framework, Web API Frontend: React.js, Vue.js, Angular, JavaScript, TypeScript, Bootstrap Database: Microsoft SQL Server, Entity Framework, LINQ, Stored Procedures Cloud & DevOps: Microsoft Azure, Azure App Services, Azure SQL, Azure Storage, Azure DevOps, CI/CD Architecture: REST APIs, Microservices, Authentication & Authorization, Role-Based Access Control 📌 What clients value about my work: • Clean and maintainable code • Scalable application architecture • Reliable API development • Performance-focused database design • Clear communication and on-time delivery • Long-term support and collaboration Whether you need a business application built from scratch, a legacy .NET system modernized, a cloud migration to Azure, or a new feature added to an existing platform, I can help deliver a reliable, production-ready solution. Let's discuss your project.

You need software that solves a real problem, built right the first time, by people who understand your business and not just your stack. I'm Haseeb, a Malaysian based senior engineer with 13-Year experience and $37M in Delivered Solutions and contributed for World Bank, Petronas & Fortune 500 companies projects. I turn ideas into MVPs and production-ready solutions. Expert in microservices-based, multi-tenant SaaS, Web3, CRM, ERP and Cloud Applications. I manage entire software lifecycle, from architecture and CI/CD pipelines to deployment and long-term maintenance, ensuring secure, high-performance solutions. ACCOMPLISHMENTS: 1-Smart Business Card- Smart Nation Expo 2025-Kuala Lumpur 2-Digital Nomad Expert 2024-Malaysia 3-Supply Chain Automation Product in LEAP 2023-Riyadh 4-Employee Access portal presented in HCTC 2023-Florida 5-Delivered integrated enterprise solution in record 6Months- Adcoop, UAE 6-Led core team World Bank Project ($17M) YES, I AM READY: Fix performance bottlenecks, secure your system, and deliver a production-ready solutions. Technical Skill Set: * AI & Intelligent Integrations: Replit,n8n, OpenCode, Cursor, Claude, Gemini, GPT, Notebook LLM,GitHub Copilot, OpenRouter * Backend & Application Development: C#, .NET Core, ASP.NET Web API, Python, Supa-base * Architecture: Microservices, REST APIs, Distributed Systems, Clean Architecture, DDD, CQRS * Frontend & UI Development: Angular, React, JavaScript, TypeScript, HTML, Tailwind, jQuery * Cloud, DevOps & Infrastructure: Azure , Docker, Kubernetes, Nginx * Access Management: Azure Active Directory (AD), Keycloak ,OAuth2 * Databases & Data Storage: AzureSQL, MySQL, PostgreSQL, MongoDB, SQL Server * API Design & System Integration: REST APIs, SOAP, GraphQL, OpenAPI, * Messaging, Streaming & Queues:RabbitMQ, Azure Service Bus, Redis , Azure Event Grid * Version Control & Collaboration: Git, GitHub, Bitbucket, TFS, Tortoise SVN, Azure DevOps * Design & Documentation: Figma, Canva, IBM Focal Point,Drawio * Project Management: JIRA, Redmine, ClickUp, DevOps Borad * Code Quality & Analysis: SonarQube Keywords: .NET Developer | C# Developer | ASP.NET Core | Backend Developer |Frontend Developer | SaaS Architect | Enterprise Software Development | Microservices Architecture | Multi-Tenant SaaS | REST API Development | API Integration | Azure Cloud | Azure DevOps | CI/CD Pipelines | Cloud Migration | Docker | Kubernetes | SQL Server | Entity Framework | AI Integrations | OpenAI / Azure OpenAI | AI Chatbot Developer | Web Application Development | .NET Core | Full Stack .NET | Enterprise SaaS Backend | Cloud-Native Applications | Scalable Backend Systems | Performance Optimization | React Developer | Frontend Development | Front-end Developer | Angular Developer | TypeScript | JQuery | JavaScript | Figma | RxJS | OData

Looking for a senior backend engineer who can design and deliver production-ready systems end to end? I build scalable backend platforms, AI/LLM-powered systems, and cloud infrastructure using Go, Django, and Postgres (AGE/GIS) across AWS and GCP. No shortcuts. No outsourcing. You work directly with me, from architecture to deployment. Expect clean code, secure systems, and reliable delivery. ━━━━━━━━━━━━━━━━━━━ 🌐 IoT Development | Azure IoT ━━━━━━━━━━━━━━━━━━━ ✓ Azure IoT Hub - device provisioning, telemetry, fleet management ✓ Azure IoT Edge - edge computing, offline inference ✓ Azure Stream Analytics - real-time IoT data processing & alerting ✓ Azure Digital Twins - physical environment modeling & asset tracking ✓ MQTT, AMQP - IoT device protocol integration ✓ End-to-end IoT: device → cloud → application layer ━━━━━━━━━━━━━━━━━━━ ⚙️ Backend & Full Stack ━━━━━━━━━━━━━━━━━━━ ✓ Python (Django, DRF, Flask, Celery, Microservices, GraphQL, Swagger) ✓ Golang (Gin, WebSockets, real-time, high-performance APIs) ✓ JavaScript / TypeScript (React, Next.js, Angular, Vue, Node.js) ✓ PHP (Laravel, WordPress, CakePHP, Symfony, CodeIgniter) ✓ Flutter / Dart - iOS, Android, MacOS, Windows, Linux, Web ✓ REST API, GraphQL, WebSocket, SDK & API integration ✓ Unit & feature testing, TDD, QA before every single delivery ━━━━━━━━━━━━━━━━━━━ 🗄️ Databases ━━━━━━━━━━━━━━━━━━━ ✓ SQL: PostgreSQL, MySQL, MsSQL - design & query optimization ✓ NoSQL: MongoDB, CockroachDB, Redis - real-time & distributed ✓ Vector: Pinecone, ChromaDB - AI semantic search ✓ Big Data pipelines, scraping, ETL workflows ━━━━━━━━━━━━━━━━━━━ ☁️ Cloud & DevOps ━━━━━━━━━━━━━━━━━━━ ✓ GCP (GKE, Cloud Run, BigQuery, Cloud SQL) ✓ AWS (EC2, RDS, EKS, Lambda, S3, VPC) ✓ Azure (IoT Hub, IoT Edge, Stream Analytics, Digital Twins, AKS) ✓ Docker, Kubernetes, Jenkins CI/CD, GitLab CI/CD, Shell scripting ✓ Nginx, Apache Kafka, Prometheus, Grafana, Loki ✓ Linux (Ubuntu, CentOS, RHEL) - bare-metal & cloud ━━━━━━━━━━━━━━━━━━━ 🤖 AI & LLM Integration ━━━━━━━━━━━━━━━━━━━ ✓ Claude API, OpenAI, Higgsfield, Gemini - AI-native app development ✓ LangChain, RAG pipelines, HuggingFace, ComfyUI, prompt engineering ✓ Generative AI, LLM fine-tuning, AI chatbot development ✓ Vibe coding - rapid AI-assisted MVP delivery ✓ Vector DBs: Pinecone, ChromaDB - semantic search & retrieval ━━━━━━━━━━━━━━━━━━━ 🏗️ Enterprise Infrastructure & Security ━━━━━━━━━━━━━━━━━━━ ✓ Dell EMC PowerEdge R740 - bare-metal, PERC H730P, SAS RAID 5 ✓ CCNA networking - VLANs, routing, FortiGate firewall config ✓ WireGuard VPN mesh, iptables, UFW hardening ✓ LUKS2 encryption, LVM, CIS-compliant Linux partition layout ✓ HashiCorp Vault, Wazuh HIDS, AppArmor, Fail2Ban, AIDE, auditd ✓ Financial-grade, security-hardened private data center operations ✓ UI/UX, Gestalt Principles, Responsive Design, SEO, SaaS architecture Every project gets tested before delivery. Every database schema is optimized from day one. Every line of code is written to be clean and maintainable long after the project closes. 📩 Have a project in mind? Send me a message - I typically respond within a few hours and can start immediately.