Juraj Tonhauser
Tonhauser Procurement Consulting — Senior SAP Ariba Technical Consultant — Integration · BTP Implementation · Data Migrations
Senior SAP Ariba technical consultant with 20 years on Ariba projects, specializing in
integration and the technical setup of SAP Ariba products. I design and own migration
frameworks for large global enterprises, and am repeatedly trusted to take sole technical
ownership of complex, high-value migrations. I focus on out-of-the-box thinking and
non-standard custom solutions built on the SAP Ariba product suite.
Core expertise
- SAP Ariba: Upstream (Sourcing, Contracts, SLP, S2C) and Downstream (Buying, P2P, Invoicing); v8 → v9 migrations; on-premise and on-demand.
- Integration: CIG, CI9 / SAP connector, SAP PI, Ariba APIs, cXML; SAP S/4HANA, SRM, CLM, Oracle ERP, third-party catalogs.
- Data migration: transactional and master-data frameworks with automated transformation and validation; large-volume document migration (400+ GB).
- Development: Java, Spring / Spring Boot, REST APIs, J2EE; test automation (Serenity, Selenium); build automation (Vagrant); ABAP basics.
Contact
Email: tonhauser@gmail.com
Phone: +420 774 982 060
Based in Prague, Czech Republic.