The authors of »Concur: Travel and Expense Management with SAP«

Sven Ringling

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Sven Ringling is a consultant and the UK director of iProCon (, an SAP SuccessFactors, SAP ERP HCM, and Concur consulting partner. He works with large and medium-sized organizations to drive digital transformation and to optimize HCM, payroll, and T&E processes. He is the author of two editions of Mastering HR Management with SAP ERP HCM and an SAP Mentor.

Hannah Smith

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Hannah Smith is a principal Concur and payroll consultant at iProCon. She has nine years of experience working with a range of customers across various industries and locations on the core HCM modules and is iProCon‘s Concur SME for the UK.

Andy Wittmann

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Andy Wittmann is a travel and expense industry expert and the managing director and lead consultant at T&E Consulting. His responsibilities include all aspects of global services from implementations to helping organizations improve their overall travel and expense programs on a domestic, regional, and international scale. He brings extensive experience to his clients, having deployed Concur Travel, Concur Request, Concur Expense, and Concur Invoice for almost 100 clients in more than 120 countries. Andy has more than 15 years of experience in consulting, technology, and project management. He leverages his technical, process development, and SAP Concur expertise to create optimal solutions for clients.
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