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János Vilmos is a Senior ABAP Developer at Lupus Consulting since May 2023, specializing in ABAP developments for various industries, including health, hygiene, and metalworking. Previously, János held multiple roles at SAP from August 2006 to April 2023, including Senior Mobile Developer and Senior ABAP Developer in Integrated Business Planning (IBP). Responsibilities included full-stack development, ABAP programming, oData backend integration, customer support, and performance tuning. János's notable contributions include the development of mobile applications and Fiori apps, alongside enhancements and maintenance of SAP systems. János began their career as a System Engineer at Tata Consultancy Services, focusing on J2EE development. János holds a Master's degree in Information Technology from the University of Veszprém.