Nathan Giullian is the founder of Birch Run Consulting, where he helps organizations modernize their analytics and AI capabilities using Microsoft Fabric, Power BI, Azure, and large language models such as ChatGPT. He specializes in practical, cost-effective architectures that enable teams to deliver value quickly while maintaining strong governance and security.

Nathan works with clients across industries to design semantic models, optimize Fabric capacity and Azure spend, and implement AI-driven workflows that accelerate reporting, research, and decision-making. His approach focuses on education and enablement—giving teams the tools and knowledge to succeed independently.

Before launching Birch Run Consulting, Nathan worked as a Senior Business Intelligence Developer, building enterprise-grade analytics solutions and becoming known for his expertise in DAX and data modeling. He holds multiple Microsoft certifications across Power BI, Fabric, Power Platform, and Azure.