Développeur C++ HPC pour simulation de structures cosmiques

About the role

We are looking for a motivated intern to join the “Large Structures and Deep Universe” team at the Institut d’Astrophysique de Paris. The internship (4‑6 months) focuses on porting and optimizing a cosmological N‑body simulation code to modern C++ and high‑performance computing architectures.

Key responsibilities

• Port the existing C code of the Simbelmynë simulation to C++.
• Develop parallel algorithms for both CPU and GPU using the Kokkos framework.
• Run and benchmark the code on the institute’s HPC cluster.
• Maintain version control and collaborate with team members.
• Document the implementation and performance results.

Required profile

• Currently enrolled in a university program (computer science, physics, applied mathematics or related field).
• Strong interest in scientific computing and high‑performance computing.
• Ability to work independently and within a small research team.

Required skills

• C++ programming.
• High‑performance computing concepts.
• Kokkos framework.
• GPU and CPU parallel programming.
• Linux environment.
• Version control (e.g., Git).

What we offer

• Stipend of approximately €700 per month.
• Hands‑on experience with state‑of‑the‑art cosmological simulations.
• Training in modern HPC tools and practices.
• Opportunity to contribute to peer‑reviewed research.