About Us

GUS ERP GmbH, GUS Nordic ApS and GUS Schweiz AG provide GUS-OS Suite, a web-based ERP enterprise solution that includes all industry functionalities and meets regulatory requirements.

The companies are members of the GSG GENII Software Group (www.gsg-genii.com), which offers leading, industry-specific software solutions and services, explicitly for medium-sized companies and public administrations. With its industry knowledge and personal customer relationships, the group of companies is a trustworthy partner and expert advisor to its customers. It accompanies its customers through digitization and ensures that they are equipped for the future in a volatile environment.

GENII, headquartered in Munich, Germany, has generated sales of approximately 340 million euros with around 2,400 employees. GENII is backed by Bregal Unternehmerkapital and Elvaston.


Ekki web min - GUS-OS Suite - GUS ERP

Ekkehard Ziesche

Customer Strategist, CEO of GUS ERP GmbH

Expertise: Sales, Customer Success

Career: COO of the GUS Group since 2018, previously Managing Director of various GUS subsidiaries since 2001.

Life motto: To handle yourself, use your head. To handle others, use your heart.

Ralph Hartwig

Business Enabler, CFO of GUS ERP GmbH

Expertise: Finance & Controlling, M&A, Support Processes, Digitalization, Corporate Strategy, Change Management

Career: CFOof GUS Group since 2020, previously CFO at IT companies, of which around 11 years at Materna SE and subsequently Qvest Media GmbH.

Life motto: Your only limit is your mind.

Ralph web min - GUS-OS Suite - GUS ERP
Joerg Magerl GUS Schweiz AG - GUS-OS Suite - GUS ERP

Jörg Magerl

Macher, CEO of GUS Schweiz AG

Expertise: Business Development, Change Management, Digitalization, Biocybernetics

Career: Since 2018 CEO of GUS Schweiz AG and 2012 - 2018 Sales Manager and ERP Consultant of GUS Schweiz AG and GUS Group, previously a good 20 years in various management positions in different industries.

Life motto:
Almost everything has a positive side, the art is often to see and use it.

Our industries at a glance

Partner network: Strong partners and diverse synergies

With GUS Group at your side, you benefit from a strong network of different partner companies, especially from the consulting and technology sector. Together, we ensure that you receive the optimal solution offer for your company, if required. Contact us!

Get into conversation

Is your interest aroused? Do you still have questions? Do you need more information? Are you looking for a conversation? We are looking forward to the dialog with you!