You will get a custom AI Voice Agent with Python, Twilio and OpenAI
Top Rated
Project details
I build production-grade AI Voice Agents from scratch using Python,
Twilio, and OpenAI — no templates, no low-code shortcuts. Every system
is custom-engineered around your business logic with real integrations
that take action, not just respond.
What sets this apart:
· Full custom Python backend (FastAPI/Flask)
· Real tool integrations — Google Calendar, HubSpot, SimplyBook
· Multi-turn memory & natural conversation flow
· Live transcripts & AI-generated summaries
· Clean, documented, deployment-ready source code
I have 3+ years of experience shipping voice automation systems for
healthcare, SaaS, real estate, and e-commerce businesses. I understand
the business problem first, then engineer the right solution.
From architecture to deployment fully owned, fully delivered.
Twilio, and OpenAI — no templates, no low-code shortcuts. Every system
is custom-engineered around your business logic with real integrations
that take action, not just respond.
What sets this apart:
· Full custom Python backend (FastAPI/Flask)
· Real tool integrations — Google Calendar, HubSpot, SimplyBook
· Multi-turn memory & natural conversation flow
· Live transcripts & AI-generated summaries
· Clean, documented, deployment-ready source code
I have 3+ years of experience shipping voice automation systems for
healthcare, SaaS, real estate, and e-commerce businesses. I understand
the business problem first, then engineer the right solution.
From architecture to deployment fully owned, fully delivered.
AI Algorithms
Large Language Model, Multimodal Large Language ModelAI Applications
AI Chatbot, AI Mobile App Development, AI Text-to-Speech, Automatic Speech Recognition, Conversational AI, Natural Language Generation, Natural Language UnderstandingAI Development Language
PythonAI Tools
Hugging Face, StreamlitAI Models
BERT, GPT-4, LLaMA, WhisperWhat's included
| Service Tiers |
Starter
$100
|
Standard
$450
|
Advanced
$850
|
|---|---|---|---|
| Delivery Time | 3 days | 12 days | 22 days |
Number of Revisions | 1 | 3 | 4 |
AI Model Integration | |||
Batch Normalization | |||
Database Integration | - | ||
Detailed Code Comments | - | ||
Image Upscaling | - | - | - |
MLOps | - | - | |
Model Deployment | - | - | |
Model Documentation | - | - | - |
Model Monitoring | - | - | |
Model Testing & Optimization | - | - | - |
Model Tuning | - | - | - |
Natural Language Processing | - | - | - |
NLP Tokenization | - | - | - |
Pre-Training | - | - | - |
Prompt Engineering | |||
Setup File | - | ||
Source Code |
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Alex D.
Dec 29, 2025
BlueLines
Umair is an excellent freelancer to work with. He brings great attention to detail, is highly supportive and flexible, and consistently delivers to tight deadlines. Communication is clear and professional throughout. I would strongly recommend him to colleagues and teams looking for a reliable, high-quality collaborator.
AK
Ahmad K.
Dec 21, 2025
Build me an AI agent & RAG
I highly recommend Umair because he's very professional, self-motivated and delivers on time
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Alex D.
Nov 4, 2025
Alexander Dunne
Umair has done outstanding work on a truly unique AI project. His dedication, creativity, and technical expertise were evident throughout the process. He consistently approached challenges with diligence and a problem-solving mindset, delivering high-quality results on time. Beyond his technical skill, Umair has been extremely helpful and collaborative, always willing to share insights and support the team. His professionalism and commitment made a significant positive impact on the project’s success.
Highly recommended for any innovative AI-driven initiative.
Highly recommended for any innovative AI-driven initiative.
JM
Joel M.
Oct 21, 2025
Romulus Social
It's perfect speaker and he did his job our application
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Alex D.
Oct 14, 2025
AI Systems Development
Working with this freelancer was a great experience. He was professional, responsive, and highly skilled. His technical expertise and attention to detail ensured everything was delivered on time and to a very high standard. I’d gladly work with him again and highly recommend him to others.
About Umair
AI Voice Agent Developer | RAG Chatbots | Agentic AI | Python
100%
Job Success
Lahore, Pakistan - 9:21 am local time
I'm an AI Engineer with 3+ years building production-ready AI Voice Agents, RAG-based Chatbots, and Agentic AI systems. Clients in healthcare, legal, SaaS, and cybersecurity trust me to reduce human intervention, cut support costs, and deliver intelligent automation that scales.
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🎙️ AI VOICE AGENTS (Core Specialty)
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I architect complete voice automation pipelines — not templates.
→ Aiden Pro: Multi-tenant AI Voice Agent platform with dedicated numbers, real-time transcripts, AI call summaries, Google Calendar booking & HubSpot CRM sync — isolated per tenant, built to scale.
→ SimplyBook Voice Assistant: End-to-end voice + messaging agent handling bookings, rescheduling & cancellations via API — zero manual intervention.
Platforms: Vapi · Retell AI · Twilio · ElevenLabs
Stack: Python · FastAPI · Flask · Supabase · Webhooks · REST APIs
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🧠 RAG CHATBOTS & AGENTIC AI
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I build RAG systems that connect private data to intelligent agents — retrieving, reasoning, and responding with precision.
→ Cybersecurity AI Assistant: RAG system over MITRE ATT&CK, CVE data & ransomware profiles for real-time threat-hunting guidance.
→ LiveLines (UNSC): Full-stack RAG app with live Q&A over UN Security Council transcripts.
→ Veterinary Chatbot: RAG chatbot for a DVM giving pet owners accurate holistic + conventional medical answers.
→ Book Writing Assistant: RAG pipeline letting authors upload datasets and auto-generate style-consistent content.
Stack: LangChain · LlamaIndex · LangGraph · OpenAI API · Claude (Anthropic) · Pinecone · Weaviate · Multi-Agent Systems · Tool Calling · Long-term Memory
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⚙️ PYTHON BACKEND & API DEVELOPMENT
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→ FastAPI & Flask — high-performance REST APIs & microservices
→ Webhook design, third-party integrations, multi-tenant architecture
→ Production-ready, documented, and deployment-ready
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📌 FULL STACK KEYWORDS
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AI Voice Agent · Conversational AI · Vapi · Retell AI · Twilio · ElevenLabs · AI Chatbot · RAG · Retrieval Augmented Generation · Agentic AI · AI Agent Development · LangChain · LlamaIndex · LangGraph · OpenAI API · Claude · Pinecone · Weaviate · Generative AI · Large Language Model · LLM · Prompt Engineering · FastAPI · Flask · Python · Supabase · HubSpot API · Google Calendar API · n8n · REST API · Webhook · API Integration · AI Automation · Natural Language Processing · Multi-Agent Systems · AI App Development
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✅ HOW I WORK
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✔ Shipped systems — not prototypes
✔ Business-first thinking, then engineering
✔ Full ownership: architecture → build → deploy
✔ Milestone-based delivery, async-friendly, clear updates
Have a voice agent, RAG chatbot, or AI automation project?
Let's talk. Message me and we'll scope it out. 👇
Steps for completing your project
After purchasing the project, send requirements so Umair can start the project.
Delivery time starts when Umair receives requirements from you.
Umair works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & Architecture Planning
I review your requirements, define the conversation logic, tool integrations, and system architecture. A brief plan is shared for your approval before any code is written.
Backend Setup & Twilio Integration
I set up the Python FastAPI or Flask backend, configure Twilio for call handling, and establish the audio streaming pipeline with proper webhook handling.