Scale and mission. BNSF moves freight across 28 western states and 3 Canadian provinces, and bnsf|tech is explicitly positioning itself as building rail's first hybrid cloud and becoming an AI-driven enterprise. At BMO I worked on systems supporting 500K+ daily transactions, and at 7-Eleven I built Kafka-based real-time event streaming across 77,000+ stores. That's the same kind of high-volume, operationally critical engineering, just applied to freight instead of banking or retail.