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# CFD Solver Developer (M-Star) , Lyon

- **Company:** Siemens
- **Location:** Lyon, France
- **Contract:** Permanent contract
- **Skills:** Nvidia CUDA, Computer Programming, Data Structures, Computational Geometry, Parallel Computation
- **Published:** September 1, 2026
- **Apply:** https://jobs.siemens.com/fr_FR/externaljobs/JobDetail/499009

## About the Role

* Background in numerical methods for transport physics (fluid dynamics, advection diffusion, particle mechanics, or heat transfer).
 * Writing high performance physics codes using parallel computing in shared and distributed memory systems.
 * Expertise with Lattice Boltzmann Methods (LBM) for fluid simulation.
 * Knowledge of the Discrete Element Method (DEM) for particle mechanics.
 * Specialization in numerical methods for multiphase modeling of liquid-liquid and gas-liquid systems.
 * Algorithms for computational geometry including structured/unstructured meshing, 3D search, and mesh refinement.
 * Detailed understanding of GPU architectures and CUDA toolkit.
 * MPI programming for multi-GPU code development.
 * Experience working on a large multiphysics solver.

## Description

* Developing M-Star's fluid dynamics solver including maintenance, feature addition, algorithm implementation, and validation.
 * Translating academic research in numerical methods into a high-performance, easy-to-use software product.
 * Modeling a wide-range of physics including fluid dynamics, multiphase flows, advectiondiffusion, particle mechanics, and heat transfer.
 * Implementing meshing algorithms and data structures for GPU architectures in a distributed memory environment.
 * Working with support engineers and users to tailor software to current needs.
 * Performing validation studies and presenting results at conferences.


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