Sajjad Ahmad
Machine Learning Engineer & AI Developer
Professional Summary
Top-performing AI and ML Developer in Islamabad with proven expertise in designing, training, and deploying production-grade Machine Learning and Large Language Model (LLM) solutions. Specialized in RAG (Retrieval-Augmented Generation) pipelines, NLP, Computer Vision, and scalable REST APIs using Python, PyTorch, TensorFlow, LangChain, and FastAPI. Passionate about building intelligent agents that solve complex real-world problems with low latency and high accuracy.
Core Expertise & Skills
AI & Large Language Models
LangChain, LlamaIndex, RAG Pipelines, Prompt Engineering, Fine-tuning (LoRA/QLoRA), OpenAI API, HuggingFace Transformers
Machine Learning & Deep Learning
PyTorch, TensorFlow, Scikit-Learn, Computer Vision (YOLO, OpenCV), NLP (SpaCy, NLTK), Time-Series Forecasting
Backend & MLOps
Python, FastAPI, Docker, AWS, Git, CI/CD, REST APIs, Vector Databases (Pinecone, ChromaDB, Qdrant, Weaviate)
Key Projects & Experience
Enterprise RAG & LLM Assistant Platform
Production AI• Designed and deployed an end-to-end Retrieval-Augmented Generation (RAG) system processing 100,000+ enterprise documents with sub-second retrieval.
• Integrated vector search (Pinecone) with custom embedding models and LangChain agents, boosting response accuracy by 40%.
• Built scalable asynchronous API endpoints using FastAPI and containerized via Docker for AWS cloud deployment.
Real-Time Computer Vision & Object Detection System
Computer Vision• Trained and optimized custom YOLO models for real-time video stream analysis and automated anomaly detection.
• Optimized model inference latency by 30% using model quantization and TensorRT optimization.
• Implemented full monitoring dashboard and alert pipeline for live production feeds.
AI Voice Assistant & NLP Trading Analyzer
NLP & Audio AI• Developed speech-to-text and speech synthesis pipelines for hands-free conversational AI interaction.
• Implemented sentiment analysis and entity extraction on financial news streams to generate predictive trading signals.
Education & Background
Bachelor of Science in Computer Science / AI
Islamabad, Pakistan • Focus on Artificial Intelligence & Deep Learning
Interested in hiring Sajjad?
Available for freelance, contract, and full-time ML roles in Islamabad & Remote.