Following the takeover of CAP Gemini by debis Systemhaus in 1992, he undertook sales and management functions in the market sector trade until mid-1999.

Afterwards and over many years, Achim Sieren successfully established and developed Wincor Nixdorf’s SAP consulting business in the sector trade/retail as a managing director. As of 2008, he was responsible for the global setup and expansion Wincor Nixdorf’s professional services for trading companies.

In December 2013, Achim Sieren changed to GK Software AG in Schöneck, where he was the responsible chief operating officer for the areas sales, projects and services.

Since January 2016, Achim Sieren has strengthened the management board of consenso Consulting GmbH and will in particular develop and expand the positive business development based on his many years of intimate knowledge of the market sector trade.

In June 2000, Marc Weber changed to the newly founded global-e-net ISS which relaunched under consenso Consulting GmbH in 2008.

Since the beginning of his consultant career, Marc Weber has been working on numerous projects and in various roles as consultant, sub-project and project manager. He has been primarily concerned with tasks in the areas of aftersales services, logistics and master data in the environment of miscellaneous retailing projects.

Among others, Marc Weber took care of the functional overall project management for the implementation of a car trade solution (Dealer Management System) for VAPS EDV-Service Vertrieb GmbH. Subsequently, his responsibilities included the project management for the central master data management with EDEKA LUNAR GmbH and many more.

Already during his studies at the University of Giessen, during various practice phases, Alexander Angerhausen could gain initial experiences in trade/retail and the SAP environment – specifically with a focus on SD and MM.

Since joining consenso, he has constantly extended these experiences. The starting point was his participation in SAP’s “LUNAR” program for the EDEKA group, specifically in the areas Cut-over Management and Process Integration.

Meanwhile, the functional focus of his work is on the integration of processes across all sales channels via GK Software with SAP Retail and S/4 Merchandise, SAP CAR as well as SAP Forecasting & Replenishment (F&R) and C/4HANA – with special emphasis on the topics Project Management, Architecture Consulting and Integration Management. A recent example for his work is the successful go-live of SAP OmniPOS by GK and SAP CAR at manufactum in summer 2018, with Alexander Angerhausen in the role of the responsible Project Manager.

 

As a line manager, he took over responsibility for areas like purchasing, house management and organisation of leading companies. In connection with his tasks and positions, Christian Jerofke was responsible for the implementation of new ERP and analysis systems from the customer perspective.

In 2007, he started as a consultant with global-e-net ISS and has continued his career since the relaunch under consenso Consulting GmbH.

Following his successful studies in business administration with a focus on trade at the University of Cooperative Education in Karlsruhe, Holger Kainz started his professional career as a manager/purchaser for the Karstadt/Quelle group. In addition to classic tasks in sales and category management, he gathered first experiences in the context of the implementation of customised software.

Since 1998, Holger Kainz has been active in SAP consulting going through the different project roles as specialist consultant, sub-project manager and solution architect, i.a. for SAP Retail Solutions GmbH, Wincor Nixdorf Retail Consulting GmbH and axentiv AG.

Since 2016, Holger Kainz has been working for consenso as executive consultant / managing partner. As solution architect he advises trading companies in the context of digital transformation and relevant cross-channel scenarios and is responsible for their implementation also as project manager.

Since March 2011, Marcel Ruholl has been working for consenso Consulting GmbH.

Here, his first project already transferred him into the trading/retail sector. He was involved into SAP’s “LUNAR” program for the EDEKA group as a consultant with a focus on retailing processes. Further trade projects followed – as SAP Consultant, later Senior Consultant and Sub-Project Manager. Again and again, Marcel Ruholl has had the opportunity to intensively deal with the solutions by GK Software, thus extending consenso’s expertise in this field step by step.

Since 2015, Marcel Ruholl has been focusing on the topic omni-channel and has been advising our customers especially in the field of process integration. In the role of the Solution Architect or Project Manager, he has participated e.g. in projects for EDEKA, Jacques’ Weindepot or Dänisches Bettenlager. Since 2018, moreover, he has managed omni-channel projects in the Middle East.

Since 2019, Marcel Ruholl has been the responsible Managing Partner for consenso’s business area Omni-Channel & Store Solutions together with Alexander Angerhausen.