• Né le 05/03/1971 à Leuven (Belgique)
  • Nationalité Belge
  • Marié(e)

Denis Costermans is an advisor at Arendt Business Advisory (ABA), Arendt’s dedicated management consulting firm. He leads the advisory services to the banking sector, with 20 year experience in the industry.
Denis joined ABA after 5 years as consulting partner at EY and 15 years at Deloitte and Accenture in Strategy and Operations services. Throughout his career, he acted as advisor to decision makers and senior executives in small to large organizations.
He is competent in several areas of the financial sector, with a focus on Private Banking, in Luxembourg and abroad. He is experienced in helping financial institutions to simplify, grow and optimize their performance.
He is also author of many industry studies, trainer on banking matters, regular speaker at conferences and author of articles on industry challenges.

Langues parlées

  • Français (Native or bilingual proficiency)
  • Anglais (Full professional proficiency)
  • Néerlandais (Elementary proficiency)


Expériences professionnelles

  • Arendt Business Advisory

    Arendt Business Advisory

    • Lead Advisor - Banking & Financial Institutions
    • janvier 2019 à aujourd'hui
  • EY Luxembourg

    • Directeur-Associé
    • juillet 2013 à décembre 2018
  • Deloitte

    • Director
    • février 2001 à juin 2013
  • Accenture SA

    • Senior Consultant
    • janvier 1998 à décembre 2000
  • WPP-Research International

    • Senior Research Executive
    • mars 1995 à janvier 1998


  • Strategy
  • Market Research
  • Private Banking
  • Retail Banking
  • MiFID
  • Operational Strategy
  • Customer Experience
  • Setting up new businesses
  • Training
  • Lecturing
  • Business Process Improvement
  • Business Model
  • Cost Reduction Implementation
  • Digital Strategy


Associations professionnelles

  • Association des Banques et Banquiers Luxembourg (ABBL)

    • ar Membre Digital Banking and FinTech Innovation Cluster (DBFI)

Formations et distinctions

Louvain School of Management

  • Master en Administration et Gestion
  • 1989 - 1994