You will get AI Engineer Specializing in RAG (Retrieval-Augmented Generation)
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Project details
Build a powerful RAG (Retrieval-Augmented Generation) AI system with an experienced AI Engineer specializing in LLM integration, vector databases, and knowledge-base chatbots. I develop custom RAG pipelines that connect Large Language Models with your business data to deliver accurate, context-aware, and real-time AI responses.
If you need AI powered by your documents, PDFs, databases, or website content, I can build a scalable and production-ready solution.
Services I offer:
• End-to-end RAG pipeline development
• LLM integration (OpenAI, Claude, Llama, Mistral)
• Vector database setup (Pinecone, Weaviate, FAISS, ChromaDB)
• AI chatbot with knowledge base
• Semantic search & enterprise search systems
• Document processing and data ingestion pipelines
• API integrations and workflow automation
• Private data AI assistant development
I focus on building secure, scalable, and high-accuracy RAG systems that reduce hallucinations and improve response quality. Whether you need a customer support chatbot, internal knowledge assistant, SaaS AI feature, or document search system, I deliver solutions ready for real business use.
Let’s turn your data into an intelligent AI assistant
If you need AI powered by your documents, PDFs, databases, or website content, I can build a scalable and production-ready solution.
Services I offer:
• End-to-end RAG pipeline development
• LLM integration (OpenAI, Claude, Llama, Mistral)
• Vector database setup (Pinecone, Weaviate, FAISS, ChromaDB)
• AI chatbot with knowledge base
• Semantic search & enterprise search systems
• Document processing and data ingestion pipelines
• API integrations and workflow automation
• Private data AI assistant development
I focus on building secure, scalable, and high-accuracy RAG systems that reduce hallucinations and improve response quality. Whether you need a customer support chatbot, internal knowledge assistant, SaaS AI feature, or document search system, I deliver solutions ready for real business use.
Let’s turn your data into an intelligent AI assistant
Machine Learning Tools
AnyLogic, ChatGPT, Cloudera, Fiddler.ai, Google Sheets, GPT-3, Keras, MATLAB, Microsoft Power BI, Minitab, NLTK, NumPy, NVIDIA AI Platform, Open Neural Network Exchange, OpenCV, pandas, Python, Python Scikit-Learn, PyTorch, Scrapy, Stanford CoreNLP, Vertex AIWhat's included
| Service Tiers |
Starter
$199
|
Standard
$399
|
Advanced
$799
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 9 days |
Number of Revisions | 0 | 0 | 0 |
Model Validation/Testing | - | - | - |
Model Documentation | - | - | - |
Data Source Connectivity | - | - | - |
Source Code | - | - | - |
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BA
Bawar A.
Oct 7, 2025
AI Voice App Development | Loveable & Supabase | Twilio, OpenAI, Deepgram, Websocket
Nisar and his team delivered an exceptional SaaS product with an AI-powered voice agent, fully integrated with Shopify, Twilio, and Vapi. They handled the Python/Django backend flawlessly, building a scalable and production-ready solution that worked exactly as I envisioned. Their grasp on AI automation, voice workflows, and third-party integrations is top-notch. Communication was smooth, deadlines were met, and the final product exceeded expectations. Highly recommended for any SaaS, AI, or voice tech projects.
AH
Ali H.
Sep 1, 2025
Looking for AI Voice Agent Developer (Vapi / Twilio) | Custom AI Receptionist Voice Agent
It was a great experience working with Nisar on our AI Voice Agent project. He demonstrated strong expertise in Vapi, Twilio, and AI voice automation, delivering a custom AI receptionist voice agent that exceeded expectations. Communication was clear, timelines were met, and the solution was both reliable and scalable. I highly recommend Nisar for anyone needing AI voice agents, Twilio integrations, or custom conversational AI development.
SA
Syed Naveed A.
Jul 29, 2025
Bug Fix Required in OpenAI Chatbot Integration
Nisar fixed the OpenAI chatbot issue within an hour. Super efficient, clear communication, and technically sharp. Definitely recommend!
About Nisar Ahmad
AI Automation | Voice Agent, Twilio, Chatbot & Custom AI Product
100%
Job Success
Lahore, Pakistan - 1:22 am local time
AI CHATBOT DEVELOPMENT
I build GPT-4 powered chatbots trained on your business data, FAQs, and documents deployed on web, WhatsApp, SMS, and messaging platforms. My chatbots qualify leads, handle customer support, recover abandoned carts, book appointments, and manage full conversations without any manual involvement.
Chatbot services I deliver:
- AI chatbot for websites: chat widget, pop-up, embedded
- WhatsApp chatbot: automated replies, order updates, support flows
- RAG-based chatbot: trained on your documents, knowledge base, and SOPs
- GoHighLevel chatbot: Conversation AI, pipeline-integrated, CRM-connected
- E-commerce chatbot: order tracking, returns, product queries, upselling
- Lead generation chatbot: qualifies prospects, scores responses, books calls
- Customer support chatbot: ticket deflection, FAQ handling, live handoff
- ManyChat chatbot: Instagram, Facebook Messenger, SMS automation
AI VOICE AGENT DEVELOPMENT
My AI voice agents handle inbound and outbound calls naturally, maintaining context across full conversations and delivering a human-like experience at every touchpoint. Built on Twilio, Retell AI, Vapi, and GPT-4, my voice agents answer calls, qualify leads, recover lost prospects, and book appointments automatically.
Voice agent services I deliver:
- AI voice agent: inbound call handling, FAQ responses, live transfers
- Outbound voice agent: cold calling, lead follow-up, appointment reminders
- AI receptionist: answers calls, routes enquiries, captures lead data
- Appointment booking voice agent: calendar integration, confirmation SMS
- Lead recovery voice agent: re-engages cold leads via automated calls
- Multilingual voice agent: English, Arabic, French, Spanish, German
- Voice agent with CRM sync: logs calls, updates contacts, moves pipelines
- Vapi AI and Retell AI voice agent setup, customisation, and optimisation
TWILIO API INTEGRATION
Twilio is the backbone of most voice agent and chatbot systems I build. I handle full Twilio integration from phone number provisioning to complex call routing, SMS automation, and WhatsApp Business API setup.
Twilio services I deliver:
- Twilio Voice API: call routing, IVR replacement, voice agent integration
- Twilio SMS API: automated messaging, follow-ups, notifications
- Twilio WhatsApp API: chatbot integration, bulk messaging, template setup
- Twilio and OpenAI: real-time voice agent with GPT-4 powered responses
- Twilio and Retell AI: natural voice agent with human-like conversation flow
- Twilio and n8n: full automation workflows triggered by calls and messages
- Twilio Studio: visual call flow builder, IVR design, call tracking
- Twilio Flex: contact centre setup, agent dashboard, queue management
AI AUTOMATION AND WORKFLOW INTEGRATION
Every chatbot, voice agent, and Twilio system I build connects to your existing tools: CRM, email, calendar, and database, creating fully automated pipelines that run without manual input.
n8n automation: multi-step workflows, API calls, AI agent orchestration
- Zapier: quick integrations connecting chatbot and voice agent to your stack
- CRM integration: HubSpot, GoHighLevel, Salesforce, Airtable, Notion
- RAG pipeline: retrieval-augmented generation for accurate, cited responses
- Shopify integration: chatbot and voice agent connected to your store data
INDUSTRIES I SERVE
- E-commerce: chatbot for support, voice agent for cart recovery, Twilio SMS
- Healthcare: voice agent for appointment booking, chatbot for patient FAQs
- Real estate: voice agent for lead qualification, chatbot for property enquiries
- SaaS: chatbot for onboarding, voice agent for trial-to-paid conversion
- Recruitment: voice agent for candidate screening, chatbot for intake
- Legal and Finance: chatbot for document, voice agent for client intake
TECH STACK
- Voice and Telephony: Twilio, Vapi, Retell AI, Bland AI, Telnyx
- AI and LLM: OpenAI GPT-4o, Claude 3.5, LLaMA, Mistral, LangChain
- STT and TTS: Deepgram, ElevenLabs, Azure Speech, Google Cloud Speech
- Automation: n8n, Zapier, GoHighLevel
- CRM: HubSpot, GoHighLevel, Salesforce, Airtable
- Backend: Python, Node.js, FastAPI, REST API, Webhooks
WHY CLIENTS CHOOSE ME
- 50+ AI chatbot, voice agent, and Twilio projects delivered
- Production-ready systems, not demos or prototypes
- Every chatbot and voice agent fully tested before handoff
- Fast delivery, most chatbot and voice agent builds live in 5 to 10 days
Need a chatbot, voice agent, or Twilio integration? Message me with what you are automating and I will tell you exactly how to build it, what it costs, and when it goes live.
Steps for completing your project
After purchasing the project, send requirements so Nisar Ahmad can start the project.
Delivery time starts when Nisar Ahmad receives requirements from you.
Nisar Ahmad works on your project following the steps below.
Revisions may occur after the delivery date.
Project Discovery & Planning
I analyze your requirements, review data sources, define RAG architecture, and select the best LLM and vector database before development starts.
RAG Development & Integration
I develop data ingestion, vector database setup, LLM integration, retrieval pipeline, and connect the system to your app, chatbot, or API.