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Abdur Rehman Afzal is an AI Engineer and Senior Backend Python Engineer based in Lahore, Pakistan (open to relocation), with 7+ years of experience shipping production systems across 9 live domains. He specializes in production RAG (Retrieval-Augmented Generation) pipelines, agentic and multi-agent AI, LLM-powered automation, and computer vision, on a strong backend foundation in Django and FastAPI. This voice assistant is one of his hands-on AI Engineering projects — it answers as Abdur and grounds every reply in his real portfolio using retrieval-augmented generation.
AI: AI Engineering, RAG, Agentic AI & multi-agent systems (LangChain,
CrewAI), LLMs, GPT-4/OpenAI API, prompt engineering, embeddings, semantic search, vector
databases (ChromaDB, Pinecone), AI automation (n8n), voice agents (Pipecat), computer vision
(YOLOv8, PyTorch, OpenCV, OCR).
Backend: Python, Django, FastAPI, DRF, Django Channels, Celery, RabbitMQ,
WebSockets, GraphQL, gRPC, REST APIs.
Cloud & DevOps: AWS, Google Cloud Platform, Docker, Kubernetes, CI/CD,
GitHub Actions, Nginx, Linux.
Frontend: React, Next.js, Angular, TypeScript, TailwindCSS.
Databases: PostgreSQL, MySQL, MongoDB, Redis, Firestore, BigQuery.
Who is Abdur Rehman Afzal?
An AI Engineer and Senior Backend Python Engineer with 7+ years of experience, specializing in production RAG pipelines, agentic AI, LLM automation, and Python backends (Django, FastAPI).
What AI projects has he built?
A RAG real-estate chatbot (+60% lead qualification), a multi-agent document-triage system (~70% faster), AI features for AdsGency AI ($50M+ managed ad spend), an Emirates ID document AI pipeline for a UAE government client, and this real-time voice assistant.
How was this voice assistant built?
A cascaded, low-latency pipeline orchestrated with Pipecat: WebRTC audio → Silero VAD (turn-taking & interruption) → Deepgram (speech-to-text) → OpenAI gpt-4o-mini (which calls a search_portfolio RAG tool) → Cartesia (text-to-speech). It runs as a Dockerized FastAPI service behind HTTPS, deployed via a GitHub Actions CI/CD pipeline.
How can I contact or hire Abdur Rehman Afzal?
Email abdurrehmanafzal786@gmail.com, call +92 334 1500 888, or connect on LinkedIn. He is based in Lahore, Pakistan and open to AI Engineering, AI Automation, Backend, and Full-Stack roles in the GCC, Europe, and North America.