Rene Roembell is a Senior Consultant with Celantra System. He is based out of Frankfurt Germany and manages the European Chapter of the Oracle Multi-National SIG group. Rene has been working with Oracle based ERP Systems since 1989 and Oracle EBS since 1996. He was an Oracle Principal consultant until 2001 when he went into private consulting and has been with Celantra Systems since 2007.

His extensive knowledge on Oracle applications and tools is combined with a deep understanding of functional, technical and project management challenges of both domestic and international organizations.

Over the last several years he has specialized on rapid pan-European implementations for global companies.



Dan Chaffer is based in the San Diego area and has worked extensively in Finance Systems for the past 25 years, focusing on Oracle applications in a multinational context. Previously at Qualcomm, Dan led a global rollout of Oracle, with an R12 upgrade mid-way through that expanded their foot print of a single USD ledger and 19 operating units, to over 60 ledgers and 95 operating units

He has led multinational consolidation projects in both HFM and Cognos Controller, and comes with an accountant’s practical approach to system implementations



Jon has over 25 years of international IT experience, with over 20 years focusing on Oracle Applications (versions 9 through to 12). He has managed large scale projects for major blue-chip clients around Europe, and has vast experience with Finance, Supply Chain and Manufacturing Oracle E Business Suite modules and development tools. He is noted as the one of the most experienced and accomplished Oracle E Business Suite Consultants in Europe, as testified to by several repeat assignments with many long term clients. He resides in Amsterdam.



David Norris is a graduate in economics and accounting from University College Cardiff David qualified as a Chartered Accountant with Ernst and Whinney in London in 1983. Currently based in London, his career has taken him through audit management to positions as a Financial Controller in the UK and France and on to financial systems consultancy.

He is experienced in transaction processing and financial reporting and the methods by which financial systems can be structured to assist in these areas.

David brings strong project management and organisational skills to the team as well as a practical approach to the needs of each client.



Surya has over 24 years of experience in Manufacturing and Distribution operations and conducting of Operation Audits. He has been involved for 18 years on implementing, supporting and managing Oracle Applications projects. He has worked for clients in various industries such as Consumer Goods, Automotive, High Technology, Industrial Manufacturing, Wholesale Distribution and Power Generation. Surya specializes on Oracle's Supply Chain Management applications, namely Advance Planning, Distribution Planning, Inventory and Manufacturing with WMS, Order-to-Cash and Requisition-to-Pay cycle along with Financials. He has proven himself over the years by gaining Oracle Certifications in R12 application releases and well trained in Oracle Fusion SCM and Procurement Applications. He has presented his solution approach papers at OAUG. He has a Bachelor’s Degree in Science, Masters in Economic Administration, Certification in Cost Accounting and CISA. .