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Stephan Lammen – Experienced Interim Finance Manager

With over two decades of experience in financial management, Stephan Lammen is a highly skilled interim finance professional specializing in financial administration, accounting, process optimization, and ERP implementations. As the founder of SL Finance (2004), Stephan has successfully led financial teams across various industries, from multinational corporations to fast-growing startups.

Expertise & Services:

  • Interim Financial Leadership: Proven track record as Head of Finance, Corporate Controller, and Group Controller in multiple companies.
  • Financial Administration & Reporting: Extensive experience in month-end closings, annual accounts, and audit preparation.
  • ERP & Systems Implementation: Expertise in SAP, Microsoft Dynamics 365, JD Edwards, Exact Globe, and other financial software.
  • Process Improvement & Compliance: Skilled in SOX compliance, VAT regulations, and financial restructuring.
  • International Finance Management: Managed financial operations across Europe and North America, including consolidations, transfer pricing, and intercompany accounting.

Recent Assignments:

  • Interim Head of Finance & Control at Skytree B.V. – Scaling financial operations across multiple entities and countries.
  • Head of Accounting at JCDecaux Nederland – migration from AX to SAP4H and improved financial processes.
  • Financial Consultant at Prothya Biosolutions – Advised on holding structure restructuring.
  • Corporate Controller at Prothya Biosolutions – Managed transition from non-profit to profit environment and streamlined financial processes.

Why Work with Stephan?

Hands-on, result-driven approach – delivering financial clarity and operational efficiency.
Strong leadership in managing teams – ensuring smooth transitions and long-term improvements.
Deep knowledge of international finance & compliance – adept at working in complex, international and multi-entity environments.

Need an experienced finance leader to stabilize, optimize, or transform your financial operations?

contact me through my Linkedin page https://www.linkedin.com/in/slfinance/