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You will get secure and optimized back-end development using node.js/python

Hassan M.Status: Offline
Hassan M. Hassan M.
5.0
Top Rated
Preview imagePreview image

Let a pro handle the details

Buy Web Application Programming services from Hassan, priced and ready to go.
Hassan M.Status: Offline
Hassan M. Hassan M.
5.0
Top Rated
Preview imagePreview image

Let a pro handle the details

Buy Web Application Programming services from Hassan, priced and ready to go.

Project details

Hi, Hassan here. I am a backend developer with expertise in Node JS , Express JS and MySQL. I have experience in developing Rest APIs and Backend for the systems .

I have the following experiences:

 • Designed, developed and deployed Integrations to meet business needs.
 • Converted customer and product requirements into logical and well-performing services. Involved in the Client Meetings to gather requirements.
 • Worked on customized integration middleware developed in Node JS.
 • Developed Microservices using Node JS for the Integrations between Oracle Cloud & On Premise PLM and different ERP Systems like JD Edwards, SAP etc.
 • Developed Backend rest APIs using Express JS Framework.
 • Worked on Soap services to fetch Data from Oracle Cloud and Agile PLM.
 • Worked on SQL Databases, MongoDB and Firebase.
 • Developed Bill of Materials Sync Tool to sync data back to Oracle PLM.
 • Worked on Integrating Front End of Integration Middleware with the Backend.

Please contact me for a detailed discussion and suitable solution before placing an order.
Programming Languages
JavaScript, Python, TypeScript
Coding Expertise
Performance Optimization, Security, Design

What's included $1,200

These options are included with the project scope.

$1,200
  • Delivery Time 10 days
  • Number of Revisions 4
  • Number of Pages 10
    • Design Customization
    • Content Upload
    • Responsive Design
    • Source Code
5.0
3 reviews
100% Complete
(3)
1% Complete
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JM

Jai M.
5.00
May 4, 2026
AI Prompting & Automation Specialist (Claude · Gemini · ChatGPT) with n8n experience Changing this contract to hourly

MR

Muhammad R.
5.00
Nov 1, 2024
Senior Reactjs Developer Hassan was fantastic to work with as our front-end developer. He took our designs and brought them to life with precision and creativity. His responsiveness and attention to detail made the project run smoothly. Highly recommend him!

DS

Denise S.
5.00
Sep 3, 2018
Monthly Website Maintenance It has been a real pleasure working with you Hassan, and I am sad the contract had to end. You've been nothing but courteous and respectful. You did really good work, such a great job completing every task. If possible, I will certainly hire you again in the future. Thank you for everything!
Hassan M.Status: Offline

About Hassan

Hassan M.Status: Offline
AI Engineer | Voice Agents, RAG, n8n, LLM Systems, Python
100% Job Success
5.0  (3 reviews)
Lahore, Pakistan - 4:39 am local time
Most businesses don’t need another AI demo. They need AI systems that save time, reduce manual work, and run reliably in production. That’s what I build.

I’m Hassan Mehmood, an AI Engineer with 10+ years of software engineering experience, specializing in AI voice agents, RAG chatbots, LLM-powered applications, n8n automations, and production-ready AI systems.

I help businesses turn manual workflows, scattered knowledge, repetitive support tasks, and disconnected tools into intelligent AI systems that are practical, scalable, and easy to maintain.

What I Can Build for You

AI Voice Agents
Voice agents for appointment booking, customer support, lead qualification, follow-ups, reminders, call handling, and CRM updates.

RAG Chatbots & Knowledge Systems
AI assistants that answer from your documents, PDFs, websites, SOPs, internal knowledge base, product data, or customer support content.

n8n / Make / Zapier Automations
Workflow automations that connect CRMs, email, Google Sheets, Slack, APIs, webhooks, databases, and AI models.

LLM-Powered Applications
Custom AI tools using OpenAI, Claude, Gemini, prompt engineering, structured outputs, function calling, tool use, and multi-step workflows.

Python AI Backends
Scalable backend systems using Python, FastAPI, Flask, Django, PostgreSQL, MongoDB, Redis, AWS, Docker, and API integrations.

Recent Work

Emotion-Aware AI Wellness Platform — 8M+ Users
Worked on AI-powered wellness and emotion-aware chatbot experiences built for real users at scale.

Creator AI Platform
Built AI workflows and intelligent product features for creator-focused AI applications.

Prototype-to-Production Product Engineering
Helped take a product from prototype/Replit stage to a live production system with long-term engineering, automation, backend, and deployment support.

Skills & Tech Stack

AI & LLMs: OpenAI, GPT-4o, Claude, Gemini, prompt engineering, structured outputs, function calling
RAG & Vector Search: LangChain, LlamaIndex, Pinecone, Qdrant, Weaviate, Chroma, FAISS, semantic search
Voice AI: AI voice agents, speech-to-text, text-to-speech, call automation, appointment booking agents
Automation: n8n, Zapier, Make, webhooks, APIs, CRM automation, workflow orchestration
Backend: Python, FastAPI, Flask, Django, Node.js, REST APIs
Databases: PostgreSQL, MongoDB, MySQL, Redis
Cloud & DevOps: AWS, Docker, CI/CD, cloud deployment

I’m a Good Fit If You Need
An AI assistant connected to your real business data
A RAG chatbot for documents, support, SaaS data, or internal knowledge
An AI voice agent for calls, booking, support, or lead qualification
n8n automations that reduce manual work and connect your tools
A production AI backend, not just a quick prototype
Someone who understands both AI and full-stack product engineering
Why Work With Me

I don’t just connect an AI API and call it done.

I think through the full system: user flow, data structure, prompts, retrieval quality, backend architecture, integrations, error handling, deployment, and long-term maintainability.

My goal is simple: build AI systems that are useful, reliable, and connected to how your business actually works.

If you want to build an AI solution that can move from idea to real production usage, let’s talk.

Steps for completing your project

After purchasing the project, send requirements so Hassan can start the project.

Delivery time starts when Hassan receives requirements from you.

Hassan works on your project following the steps below.

Revisions may occur after the delivery date.

Requirement Gathering

Understand the project scope, features, and technical requirements.

Planning & Architecture

Design a scalable and efficient backend structure, including database schema and API endpoints.

Review the work, release payment, and leave feedback to Hassan.