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.
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.
Publications
Read their latest work
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.