Mazen Hassan

Key Skills

Software

Internal/Proprietary Tooling

Top Subject Matter

No subject matter listed

Top Data Types

Computer Code Programming

Text

Top Task Types

RLHF

Function Calling

Prompt Response Writing SFT

Freelancer Overview

I am a data scientist and AI engineer with over two years of hands-on experience building and deploying AI systems that rely heavily on high-quality training data. My background includes designing ETL pipelines to preprocess massive unstructured datasets for LLM training and RAG evaluation, as well as developing NLP-powered advisor systems that improved data-processing efficiency. I have deep expertise in data annotation, labeling, and orchestration using Python, SpaCy, LangChain, and vector databases like PostgreSQL/pgvector. My work spans reinforcement learning, agentic AI, and NLP, where I have engineered workflows to ensure the accuracy and scalability of AI models in financial, business intelligence, and document analysis domains. I am passionate about bridging advanced AI research with real-world automation and am skilled at optimizing data pipelines to deliver reliable, production-ready training data.

Labeling Experience

Education

Work History