The authors of »SAP S/4HANA«

Devraj Bardhan

Devraj Bardhan is a senior architect with IBM Germany and has led several large SAP transformations projects, designing and implementing SAP global templates and growing IBM’s SAP HANA capability. He has 22 years of IT experience, and has become a global subject matter expert for SAP S/4HANA at IBM. You can reach Devraj via Twitter @devbard or on the SAP Community Network.

Axel Baumgartl

Axel Baumgartl is part of the Center for Digital Leadership at SAP, where he leads the area of asset and method development. In his current role, he provides thought leadership and best practices for C-level customers based on his more than 18 years of experience with SAP transformation projects. He is the author of several publications about SAP products and developed a method for enterprise architecture blueprinting. You can reach Axel via Twitter @AxelBaumgartl.

Dmitry Chaadaev

Dmitry Chaadaev is an SAP ERP Financials consultant and project manager for IBM Russia. He has more than 10 years of SAP project implementation and rollout experience in several industries. He earned a physics engineering degree from Moscow Engineering Physics Institute in 2005 and an economics degree from Moscow Aviation Institute in 2010. Dmitry actively participated in the development of innovative solutions within IBM for SAP S/4HANA.

Nga-Sze Choi

Nga-Sze Choi is the SAP S/4HANA logistics subject matter expert at IBM’s SAP Global Center of Competence. She has more than 13 years of experience in global business transformation programs, leading design and implementation of SAP solutions in the areas of order-to-cash and procure-to-pay.

Mark Dudgeon

Mark Dudgeon is the Global SAP CTO of IBM Global Business Services, SAP Service Line. He has more than 20 years of experience in architecture design and delivery for some of IBM’s largest SAP deployments. Mark’s role also includes ensuring that IBM has the right partnerships, capabilities, and offerings to support its customers in their digital transformation journey with SAP. You can reach Mark via Twitter @MarkPDudgeon.

Asidhara Lahiri

Asidhara Lahiri is an SAP executive architect at the IBM India Client Innovation Centre and has designed and reviewed client architecture, defined IBM services, and grown IBM's SAP HANA capability. She has more than 17 years of IT experience architecting solutions in several global implementations. She is an SAP solution architect for one of the largest oil and gas companies and is a global SME in SAP S/4HANA at IBM. Asidhara has filed two patents and is a member of the IBM Academy of Technology. You can reach Asidhara via Twitter @AsidharaL.

Bert Meijerink

Bert Meijerink is the SAP S/4HANA Finance lead at IBM’s SAP Global Center of Competence. He has more than 30 years of working experience in implementing financial systems worldwide, and more than 20 years of experience in designing and implementing SAP global templates.

Andrew Worsley-Tonks

Andrew Worsley-Tonks is the European SAP S/4HANA migration lead for IBM Global Business Services. He has extensive experience in complex SAP upgrade and migration projects, having led IBM’s upgrade initiatives in Europe for more than four years. In his current role, he helps existing SAP customers define their SAP S/4HANA migration strategy and implementation projects. You can reach Andrew via Twitter @A_WorsleyTonks.