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Lionel Gendarme

Lionel Gendarme

Partner, Business Advisory


Lionel is an Advisory Partner in charge of business consulting services at Grant Thornton Luxembourg.
He has 27 years of experience including 19 years in advisory in the financial sector in Luxembourg, addressing banks, management companies and investment firms / specialised / support PFS, PI/EME. He had previously worked 8 years in various custody and private banking environments as account administrator, IT administrator, business analyst and project manager.

Lionel has a broad experience in client assignments pertaining to strategic organisation set-up / improvement / transformation, management consulting, regulatory and compliance, information system transformation.

He has a strong background in management advisory, projects, banking systems, securities processing, back-office and front office operations and IT general controls.

Lionel has transversal skills in various fields pertaining to banking & finance environments such as compliance, regulated entities set-up and running, regulatory reporting, data protection (GDPR), tax information matters (CRS/FATCA/QI), back-office securities processing (settlement / corporate actions / payments processing automation), IT general controls.



  • Lionel regularly publishes articles in the Benelux financial press on topics that relate to management consulting.



  • ABBL Securities Committee
  • Luxembourg Testing Board
  • Certified DPO
  • ISTQB Certified Tester Foundation Level
  • Prince2 Foundation Level
  • Lean Six Sigma Yellow Belt
  • ITIL Foundation Level
  • Master’s Degree in Mathematics, Physics and Electronics
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