LEADERSHIP
CHRIS CALLAHAN - CEO/FOUNDER
Chris is an IT Executive with 35+ years in technology and 25+ years in ERP systems. He has led programs from single-site go-lives to global ERP transformations across 50+ countries, including the world’s largest Azure SAP migration for Walgreens Boots Alliance and multi-continent rollouts for Johnson & Johnson, Pregis, and Alexion Pharmaceuticals.
Chris’s career spans leadership roles at Mobil Oil, Arthur Andersen/Accenture, a Fortune 500 consumer products company, and a successful SAP software venture. He holds certifications as an SAP Basis Consultant, PMP, CIA, and CISA.
Known for bridging technical depth with business insight, Chris founded South Tenth Avenue to help organizations manage complexity, reduce risk, and achieve lasting results.
FRANK CHO - PRODUCT GROWTH
Frank Cho is a Growth and Innovation Executive with over 20 years of experience leading P&L, product, marketing, and operations across startups and Fortune 100 companies. He has a proven record of scaling enterprises, driving efficiency, and delivering transformative growth.
At Walmart, he pioneered a cost-ownership model that saved $200M; at Johnson Controls, he grew a $100M+ business unit and expanded its SaaS base. He has also advanced economic development initiatives, securing Amazon as a client and shaping partnerships worth hundreds of millions.
Frank began his career at NASA Mission Control, later graduated top of GE’s leadership program, and has since held senior roles in technology, energy, and aviation. He holds an MBA from Columbia University and a BS in Aerospace Engineering from Iowa State.
TRUSTED IT TALENT NETWORK
South Tenth Avenue draws from a professional network of IT consultants with expertise across ERP systems (SAP, Oracle, Microsoft Dynamics), cloud platforms (AWS, Azure, Google Cloud), cybersecurity, infrastructure management, data analytics, and enterprise application integration. Our consultants bring hands-on experience with large-scale implementations, global rollouts, and legacy system modernization, giving us the technical depth to tackle even the most complex IT challenges.