Meet the Founder

Christian Calle

After 22 years leading supply chain planning, strategy, and optimization at Amazon and Cummins, I founded Tumi Advisory to bring that same rigor to companies that can't access it through traditional consulting firms. I've seen firsthand what separates supply chains that scale from ones that quietly erode value — and I built this practice to help PE investors and e-commerce operators close that gap before it's too late.

  • Amazon: Head of North American Books Supply Chain and Sr. Manager Inventory Placement, Fulfillment, and Analytics (9 years). Six-time Amazon Top Tier Performer.
  • Cummins: Global supply chain & inventory optimization leadership (13 years).
  • +$770M cost savings, +25% working capital and +550bps availability improvements.
  • Education & Certifications: MBA, APICS-CSCP, APICS-CPIM, PMI-PMP, Green Belt

Core Competencies

  • Supply Chain Strategy & Network Design
  • Inventory Management & Optimization
  • Forecasting & Advanced Analytics
  • Inventory Placement & Fulfillment Optimization
  • Cross-Border Transfers & Fulfillment
  • Working Capital & Cost Reduction
  • Executive Stakeholder Influence
  • Team Building & Talent Development
  • Product Management & Digital Transformation (ERP, IMS, WMS)