Thomas Werner

Chief Operating Officer

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Professional Summary

Chief Operating Officer with 25+ years of executive experience driving strategy, operations, and growth in global law and audit firms. Skilled in organizational development, cultural transformation, and leading large teams through mergers, integrations, and digital transformation.

Core Competencies

Professional Experience

2019–2025

Möhrle Happ Luther — Chief Operating Officer

  • Directed firm-wide operations across finance, IT, HR, marketing, and procurement
  • Drove digital transformation and process optimization for efficiency and growth
  • Aligned operations with strategic objectives through cross-functional leadership

2017–2019

RSM Germany — Chief Operating Officer

  • Implemented a unified “One-Firm” corporate structure.
  • Built and led business services teams to enhance integration and efficiency
  • Streamlined onboarding of partners and new teams

2012–2016

Mazars Germany — Chief Operating Officer

  • Consolidated and integrated multiple local firms via mergers
  • Established business services (Finance, IT, HR, Marketing, Compliance)
  • Led a 140-person team and major merger execution

2010–2012

Law Firm Consultant (Independent)

  • Advised on strategy, restructuring, and process optimization.

2002–2010

White & Case Germany — Chief Financial Officer

  • Directed finance operations during growth, mergers, and spin-offs
  • Supported lateral partner acquisitions and organizational transitions

1996–2002

Hogan Lovells — Finance Director

  • Managed finance operations across multiple jurisdictions
  • Oversaw international mergers and business-service build-outs

Key Achievements

Education

Additional Information