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Hire Nils W.

United States

Computational Physicist | HPC Specialist | Condensed Matter Physics

Profile Summary

Computational physicist with 6+ years of experience in scientific programming, high-performance computing (HPC), and software development. Strong expertise in Python (NumPy, SciPy, Matplotlib), Fortran, C++, and parallel computing. Proven ability to optimize large-scale simulations, develop complex workflows, and write efficient, well-structured code. Passionate about building high-quality scientific software for research and industry applications.

Subject Matter Expertise

• ☆ Solid State Sciences
• ☆ Condensed Matter Physics
• ☆ Computational Chemistry
• ☆ Computer Science
• ☆ Supercomputing
• ☆ Data Analysis
• ☆ Computer Simulation/Computational Modeling
• ☆ Theoretical Physics
• ☆ Computational Physics
• ☆ Python

Services

• Writing
• Research
• Data & AI

Writing Technical Writing, General Proofreading & Editing

Research Fact Checking, Scientific and Technical Research

Data & AI Algorithm Design-Non ML, Data Visualization

Work Experience

Postdoctoral Researcher

Institut Català de Nanociència i Nanotecnologia

May 2023 - Present

PhD Student

Institut Català de Nanociència i Nanotecnologia

October 2018 - May 2023

Education

PhD (Physics )

Universitat Autònoma de Barcelona

October 2018 - May 2024

Master of Sciences in Physics (with distinction)

RWTH Aachen University

October 2016 - September 2018

Bachelor in Physics

RWTH Aachen University

October 2013 - September 2016

Certifications

• Certification details not provided.

Publications

JOURNAL ARTICLE

R. Reho, N. Wittemeier, A. H. Kole, P. Ordejón, Z. Zanolli (2024). Density functional Bogoliubov-de Gennes theory for superconductors implemented in the SIESTA code . Physical Review B.

Nils Wittemeier, Claire Besson, Philipp Stegmann, Michael Schnee, Zeila Zanolli, Simona Achilli, Asmus Vierck, Robert Frielinghaus, Paul Kögerler, Janina Maultzsch, et al. (2023). Independent and coherent transitions between antiferromagnetic states of few-molecule systems . Physical Review B.

Nils Wittemeier, Pablo Ordejón, Zeila Zanolli (2022). Tuning the topological band gap of bismuthene with silicon-based substrates . Journal of Physics: Materials.

Nils Wittemeier, Pablo Ordejon, Zeila Zanolli(2022). Tuning the topological band gap of bismuthene with silicon-based substrates . Journal of Physics: Materials. 5. (3). p. 035002. {IOP} Publishing

Nils Wittemeier, Armando Pezo, Zeila Zanolli, Pablo Ordejón, Adalberto Fazzio, Stephan Roche, Jose H Garcia (2022). Manipulation of spin transport in graphene/transition metal dichalcogenide heterobilayers upon twisting . 2D Materials.

Nils Wittemeier, Armando Pezo, Zeila Zanolli, Pablo Ordejon, Adalberto Fazzio, Stephan Roche, Jose H Garcia(2022). Manipulation of spin transport in graphene/transition metal dichalcogenide heterobilayers upon twisting . 2D Materials. 9. (1). p. 015008. {IOP} Publishing

Nils Wittemeier, Matthieu J. Verstraete, Pablo Ordejón, Zeila Zanolli (2022). Interference effects in one-dimensional moiré crystals . Carbon.

Nils Wittemeier, Matthieu J Verstraete, Pablo Ordejón, Zeila Zanolli(2022). Interference effects in one-dimensional moiré crystals . Carbon. 186. p. 416--422. Elsevier {BV}