About Us

Ertan Özdil CEO weclapp

Ertan Özdil (CEO)

Expertise and Leadership


Born 1974

Started programming at the age of 9
Brought first open source CRM to market at the age of 17


1996: founded his first software company in Germany

2001: Moved to work for IBM

2005: Moved to 3U where he took over responsibility for the group software development

2008: established weclapp, aimed at developing a leading edge, disruptive ERP system jointly with 3U “SAP for SMB”

Arne Henne CRO

Arne Henne (CRO)

Internationalization and Sales


Born 1983

Studied Asian Pacific Business Administration at the University of Herfordshire


2003: General Manager at European Direct Marketing GmbH

2004: Managing Partner at Systemine eMedia GbR

2005: Target Group Coordinator at Horbach Wirtschaftsberatung GmbH

2011: Sales and Marketing Manager, DACH & Benelux at Vistaprint

2012: SMB Marketing & Program Manager, EMEA at Facebook

2018: Regional Vice President Partner Sales at Yext

2020: Chief Revenue Officer at Pylot GmbH

weclapp CFO_Christoph Hellrung

Christoph Hellrung (CFO)



Born 1971

Studied economics with a degree in business administration


2008: Member of the Management Board at ENRO AG

2009: Head of Finance, Human Resources & Administration at LambdaNet Communications Deutschland AG

2010: CFO at LambdaNet Communications & Member of the Management Board at 3U Solar Systemhandel AG (today trading as 3U Energy AG)

2011: CFO at 3U HOLDING AG

Lawyer and Chairman Ralf Thoenes weclapp SE

Ralph Thoenes



Born 1962

Apprenticeship as a banker at Dresdner Bank, Dusseldorf

Legal studies at Bonn University

A proven expert in the areas of corporate acquisition, data protection, and corporate governance


Since 1995: Lawyer with Dusseldorf-based law firms

Since 2010: Co-Founder and Partner of Altenburger Rechtsanwälte law firm

Chairman of the Supervisory Board of 3U HOLDING AG

Since 2019: Member and Chairman of the Supervisory Board of weclapp SE

Tax advisor and deputy chairman stefan thies

Stefan Thies

(Deputy Chairman)


Born 1966

Tax Consultant

Managing Director of Thies and Thies Steuerberatungsgesellschaft mbH, Heinsberg


1991–1995: Auditing and consulting at Ernst & Young GmbH, Dusseldorf

1995 – 1997: Manager in the Controlling and Operating Divisions of Deutsche Bau- und Grundstücks AG, Bonn

Since 1997: Tax Advisor in Heinsberg, since 2002 as Managing Partner of Thies & Thies Steuerberatungsgesellschaft mbH

1998 – 2008: Chairman of the Supervisory Board of mediaMotion AG, Cologne

Since 2010: Member of the Supervisory Board of 3U HOLDING AG, Marburg; since 21 May 2015 Deputy Chairman of the Supervisory Board of 3U HOLDING AG

Since 2021: Member and Deputy Chairman of the Supervisory Board of weclapp SE

AI expert Prof. Dr.-Ing. Johannes Maucher

Prof. Dr.-Ing. Johannes Maucher



Born 1969

Head of Institute for Applied Artificial Intelligence at Stuttgart Media University

Technology expert with expertise in the fields of artificial intelligence and machine learning


1990 – 1994: Diploma in Electrical Engineering/Communications Engineering, University of Ulm

1995 – 1999: Ph.D. Department for Communications Engineering, University of Ulm

2000 – 2004: Head of Competence Center digital Communications at Ascom Systec AG, Switzerland

Since 2004: Head of Institute for Applied Artificial Intelligence at Stuttgart Media University

Since 2021: Member of the Supervisory Board of weclapp SE

Cloud natives right from the start

Customers by industries

  • IT Service Provider

  • Other

  • Wholesale

  • Manufacturing

  • ECommerce

  • Agencies

  • Consulting

  • Retail

  • IT Service Provider 18%

  • Other 17%

  • Wholesale 15%

  • Manufacturing 14%

  • ECommerce 12%

  • Agencies 11%

  • Consulting 7%

  • Retail 6%

IT Service Provider0%

Built for Teams!

No inherent barriers to growth –
the sky‘s the limit

laptop frame
hero image


Project management



Merchandise management



The leading-edge cloud-based ERP-platform:

  • Joy of use
  • Genuinely cloud-based: consistent, scalable, expandable, universal, low price
  • International:
    • Focus on merchandise management (not accounting!)
    • Multi-lingual, multi-currency, multi-location
  • Platform: Java EE kernel, many extensions, partly open source
  • Active community of developers,users and technology partners

One Solution     

One login

One user interface

One platform

Corporate Culture

Start-up-like, young, agile,
ambitious, determined

Values we treasure most








The weclapp Culture Code


We are a strong team

We take responsibility for what we do

We want to grow and unleash our potential

We make sure our customers love us

We create a great working atmosphere

Company Milestones

weclapp SE (i.e. Societas Europaea, Corporation under European law),
two-tier governance system


Currently >50 employees in Germany plus external developer team in Mumbai, India


EBITDA margin exceeds 30 %
Awarded „ERP-System of the Year”
for the third time in a row


Cash break even
Awarded „ERP-System of the Year” for the first time


Company established by founder Ertan Özdil
Development and market entry phase
financed by 3U HOLDING AG
in the amount of more than EUR 20 million

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