Gaétan Gellens

MSc

Consultant

Brussels, BE

Gaétan Gellens works as a consultant in the Brussels office of Milliman. He is currently supporting clients for life and non-life projects.

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Experience

Gaétan joined Milliman in 2022, and has two years of experience. He provided support on IFRS 17 modelling and implementation. He has previously worked on non-life reserving projects and product development (R and Python).

Professional Designations

Member, Institute of Actuaries in Belgium (IABE)

Education

Master of Science, Actuarial Sciences, HEC Lausanne, Switzerland
Master of Science, Business Engineering, Free University of Brussels, Belgium
Bachelor of Science, Economics, Free University of Brussels, Belgium

Affiliations

Gaétan is an active member of the Belgian Actuarial Association. He is currently active within the working group on Data Science and AI.

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Publications

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Article

Streamlining scenario testing: A framework for streamlining stress and scenario testing

01 December 2025 - by Eamonn Phelan, Rik van Beers, Nia Powis, Gaétan Gellens

We present a robust scenario selection framework that helps (re)insurers streamline stress and scenario testing.

Gaétan Gellens

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Experience

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Read their latest work

Streamlining scenario testing: A framework for streamlining stress and scenario testing

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Gaétan Gellens

Experience

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