Finishing my PhD at the
Max Planck Institute for Gravitational Physics (Albert Einstein Institute) and
IMAPP @ Radboud University Nijmegen
(supervisors: Erik Schnetter, Badri Krishnan).
I turn high-level physics into scalable, reliable simulation software, from numerical method design to HPC automation and performance.
📍 Nijmegen, NL & Leipzig, DE
🌐 https://svretina.github.io/
✉️ stamatis.vretinaris@aei.mpg.de · svretina@gmail.com
Python-based automation pipeline that processed 100,000+ simulations on HPC systems (HTCondor), with robust job orchestration and post-processing.
Stack: Python · HTCondor · Bash/Linux · Git (CI/CD)
🔗 https://github.com/svretina/Ektome
Improved parameter estimation for gravitational-wave models by ~10× using physics-informed priors and machine learning.
Stack: Python · Bayesian inference · ML
🔗 https://github.com/svretina/PythiaBNS
📄 arXiv: https://arxiv.org/abs/2501.11518 · PRD: https://journals.aps.org/prd/abstract/10.1103/g1qs-j74x
- Summation By Parts (SBP) operators for spherical symmetry
Novel finite-difference operators with stability/accuracy validation. Implementation currently private until submission. - Self-force as an initial value problem (Julia framework)
New numerical framework for self-force calculations using 3D Finite Volume + Finite Difference methods (in progress; private until submission).
- HPC & scalability: Slurm workflows, automation pipelines, scaling studies, reproducible execution on clusters
- Performance engineering: profiling/benchmarking (e.g., LIKWID), optimization-informed development
- Numerical methods: FVM/FDM, stability + convergence analysis, high-order methods (DG in progress)
- Research software engineering: Git + CI/CD, maintainable codebases, documentation-first tooling
- Languages: Julia · Python · C/C++ · Fortran · Bash · Mathematica
- Parallel / HPC: Slurm · OpenMP · Linux toolchains · performance tooling (LIKWID)
- Methods: Finite Volume · Finite Difference · Bayesian inference · Monte Carlo
- arXiv: https://arxiv.org/search/?searchtype=author&query=Vretinaris%2C+S
- GitHub: https://github.com/svretina
- Website: https://svretina.github.io/
I’m interested in Research Software Engineer / Computational Scientist roles (HPC, numerics, scientific ML) in academia or industry.