Quantitative Finance and Actuarial Science Workshop
TalkFrom High-Dimensional Option Pricing to Multivariate Risk: Exploiting Structure in Fourier Space for Scalable Computation
Tilburg University, Netherlands
Event detailsStochastic numerics · Uncertainty quantification · Scientific machine learning
I develop and analyse scalable, structure-aware methods in stochastic numerics and scientific machine learning for problems involving high dimensionality, low regularity, rare events, partial observation, or complex dynamics. Applications span finance, energy systems and markets, climate resilience, and stochastic reaction networks in biochemical and biological systems.

About
I am an applied mathematician and Assistant Professor at the Mathematical Institute of Utrecht University. My research spans theory, algorithm design, and numerical analysis, with a focus on structure-aware numerical and scientific-machine-learning methods for stochastic systems. These systems may involve high dimensionality, nonsmooth quantities of interest, rare events, partial observations, memory, or coupled dynamics, making reliable estimation, prediction, and decision-making particularly challenging. My overarching aim is to develop scalable methods that make such problems tractable while maintaining mathematical rigour and a principled balance between accuracy and computational cost.
Rather than simply increasing computational effort, I reformulate or represent problems so that numerical methods can exploit their analytic, probabilistic, or hierarchical structure. Depending on the problem, this may involve recovering integrand regularity through smoothing and Fourier representations; reducing complexity and effective dimension through model- and dimension-reduction techniques; reducing variance through importance sampling; or designing informed, adaptive, and hierarchical sampling and quadrature strategies guided by estimates of error, variance, and cost.
I use scientific machine learning both within structure-aware numerical methods—for example, to learn transformations, reduced representations, feature maps, or controls—and as a direct tool for approximating parameters, forecasts, value functions, or policies. Stochastic optimal control likewise plays two roles in my work: it helps design automated and efficient numerical methods, particularly path-dependent importance-sampling schemes, and provides a framework for computing policies for decision-making under uncertainty in energy systems and markets.
Across mathematical and computational finance, energy systems, markets and climate resilience, and stochastic reaction networks arising in biochemical and biological systems, I connect quantifiable accuracy, variance, stability, and complexity to reliable estimation, prediction, and decisions.
Alongside my research, I teach in bachelor’s and master’s programmes, including the national Mastermath programme, and supervise PhD candidates and master’s and bachelor’s students. I co-designed and now coordinate Utrecht University’s master’s track in Mathematical and Computational Finance and serve as an Associate Editor of Statistics and Computing.
Research
Reveal structure. Reduce complexity. Enable decisions.
Structure-aware methods for pricing, multivariate risk, sensitivities, and inference in rough and path-dependent models.
Fourier methods · Quasi-Monte Carlo · Hierarchical approximation02Stochastic control and data-driven methods for renewable generation, intraday trading, storage, and coupled power systems.
Stochastic control · Forecasting · Optimization03Scientific machine learning and rare-event methods for predicting high-impact environmental extremes and supporting climate-risk decisions.
Extreme events · Imbalanced learning · Uncertainty quantification04Reliable simulation, filtering, parameter inference, and rare-event estimation for stochastic reaction networks arising in biochemical and biological systems.
Monte Carlo · Multilevel Monte Carlo · Importance sampling · FilteringUpcoming
TalkFrom High-Dimensional Option Pricing to Multivariate Risk: Exploiting Structure in Fourier Space for Scalable Computation
Tilburg University, Netherlands
Event detailsKAUST, Saudi Arabia
Event detailsVrije Universiteit Amsterdam, Netherlands
Event detailsTU Delft, Delft, Netherlands
Event detailsBrussels, Belgium
Event detailsLatest news
Selected updates on publications, projects, software, and academic events.
At ICCF 2026 at the University of Oxford, I co-organized two minisymposia with Kees Oosterlee: one on stochastic control and learning for decisions under uncertainty in energy and finance, and one on transform methods for computational finance and risk management. The conference also featured five recent works with my students and collaborators, spanning multivariate shortfall risk, rough-Heston pricing, multi-asset option pricing, the damped SWIFT method, and intraday electricity trading.
A new preprint develops single- and multilevel Gauss–Laguerre quadrature methods for Fourier pricing under the rough Heston model. The methods balance fractional-Riccati time-discretization error with Fourier-quadrature error and allocate computational work to meet a prescribed accuracy.
Since September 2026, I have served on Utrecht University’s Mathematical Institute Advisory Committee, contributing to advice on research, education, staff policy, workload, finance, and institutional collaboration.
The paper introduces a consistent dimensionality-reduction method for stochastic filtering in reaction networks, combining reduced-variance particle estimation with low-dimensional filtering equations to improve efficiency in large systems.
A new preprint introduces exponential damping into the SWIFT framework, enabling direct frequency-domain coefficient computation, sharper truncation rules, and improved accuracy with fewer Fourier coefficients.
Featured work
Five representative works selected for research breadth, methodological contribution, recency, and student collaboration.
Academic path
Mathematics for Uncertainty Quantification, RWTH Aachen
King Abdullah University of Science and Technology
King Abdullah University of Science and Technology
École Polytechnique de Tunisie
Advising the Mathematical Institute Board at Utrecht University on strategic and organisational matters.
Statistics and Computing.
Contributing to AI-resilient assessment and the responsible integration of AI, computational skills, and proof assistants.
Author Service Award, Statistics and Computing.
Co-designed and coordinate Utrecht University's master's track in Mathematical and Computational Finance.
Representing Utrecht University.
SIAM Conference on Financial Mathematics and Engineering.
For students & collaborators
I welcome conversations with students, academic collaborators, and industry partners interested in challenging stochastic problems where mathematical structure, numerical analysis, computation, and scientific machine learning can make a difference.
Student projects span stochastic modelling, numerical analysis, optimization, scientific machine learning, implementation, and validation, with applications in finance, energy, climate, and stochastic reaction networks.
Explore teaching & supervisionI welcome collaborations connecting analytic insight, error analysis, convergence, stability, and complexity with application-driven stochastic problems.
Explore research directionsI work with partners to formulate application-driven questions, uncover their mathematical structure, and develop reliable computational methods for decision-making under uncertainty.
Discuss a challengeContact
Mathematical Institute
Utrecht University
Budapestlaan 6 · Office 419
3584 CD Utrecht, Netherlands