Johannes Blaschke
Head Of Scientific Computing at Ellison Institute of Technology Oxford
Oxford, England, United Kingdom
Summary
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Senior🎓
Top SchoolJohannes Blaschke is Head of Scientific Computing based in Oxford, bringing nine years of experience at the intersection of theoretical physics, applied mathematics, and high-performance computing. With a Ph.D. in theoretical physics, he has led performance engineering programs at NERSC—coordinating multi‑person teams and postdocs to optimize exascale workflows, inform procurement, and connect national facilities. He builds and scales numerical solvers (C++, Fortran, MPI, OpenMP, CUDA) and data analysis pipelines (Python, Julia), with a research track record in stochastic PDEs, hydrodynamics, and collective dynamics. An active contributor to the AMReX exascale framework, he’s fixed core I/O and embedded-boundary issues that improve adaptive mesh refinement workflows used across CFD and multiphysics projects. Colleagues know him for combining rigorous theory with practical software engineering and for mentoring researchers to write reproducible, high-performance code. He blends deep domain expertise with hands-on system design—shaping both algorithms and the supercomputers that run them.
8 years of coding experience
6 years of employment as a software developer
Master's Degree Science (Physics major), Master's Degree Science (Physics major) at Marburg UniversityBachelor's Degree Arts/Science Conjoint (Mathematics/Physics major), Bachelor's Degree Arts/Science Conjoint (Mathematics/Physics major) at University of AucklandDoctor of Philosophy (Ph.D.) Physics, Doctor of Philosophy (Ph.D.) Physics at The University of Göttingen
Stackoverflow
37reputation
29kreached
7answers
0questions
Github Skills (15)
file-handling10
file-processing10
c-language10
file-access10
cprogramming-language10
amr10
fileio10
fortran9
mpi6
parallel-processing6
powerpoint6
data-structures6
matplotlib6
closures6
printf6
Programming languages (14)
Github contributions (5)
AMReX-Codes/amrex
Dec 2017 - Dec 2020
AMReX: Software Framework for Block Structured AMR
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1 review, 268 commits, 18 PRs in 3 years 1 month
Contributions summary:Johannes made contributions focused on improving the AMReX software framework for block-structured Adaptive Mesh Refinement (AMR) applications. Their work included fixing endianness issues in file I/O within the F_BaseLib, merging updates from the development branch, and modifying the code related to the EB (Embedded Boundary) and data processing components. They were also involved in fixing typos in documentation and updating build configurations and documentation.
amrmpistructuredsnl-applicationsmultiphysics
JBlaschke/PyNVTX
Dec 2020 - May 2021
Contributions:2 releases, 34 commits, 31 pushes in 5 months
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