Markus Piotrowski
Field Service Techniker at HBK - Hottinger Brüel & Kjær
Bochum, North Rhine-Westphalia, Germany
Summary
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RockstarMarkus Piotrowski is an experienced field service and calibration technician with 13 years in precision measurement roles across industry and the German Federal Armed Forces, currently based in Bochum. He brings hands-on expertise maintaining and calibrating complex instrumentation at HBK and previously at Testo Industrial Services, combining technical rigor with field-ready problem solving. Beyond instrumentation, Markus contributes to open-source software—implementing cross-platform GUI features for the Python Toga project and improving core calculations in Biopython—showing an unusual blend of hardware calibration and software development skills. His code contributions emphasize cross-platform adaptability and scientific accuracy, notably refining molecular weight computations and multi-OS UI behaviors. Colleagues find him reliable in high-stakes calibration environments and quietly effective at bridging hardware requirements with reproducible software tools.
13 years of coding experience
Stackoverflow
385reputation
11kreached
16answers
1question
Github Skills (22)
develop10
multiplatform10
python10
windows10
linux10
biopython10
cross-platform10
android-development10
front-end-development10
bioinformatics10
macos10
platform-independent10
sequence-alignment9
excel-dna9
proteins9
Programming languages (8)
Github contributions (5)
biopython/biopython
May 2013 - Jun 2022
Official git repository for Biopython (originally converted from CVS)
Role in this project:
Back-end Developer
Back-end DeveloperContributions:32 reviews, 106 commits, 120 PRs in 9 years 2 months
Contributions summary:Markus made significant contributions to the Biopython library, particularly focusing on improvements and bug fixes related to molecular weight calculations for DNA, RNA, and protein sequences. The user refactored the `molecular_weight` function to enhance its functionality and accuracy. They also corrected mass values in existing data tables and introduced new dictionaries for monoisotopic masses. These changes improved the library's core functionality and accuracy.
git-repositoryphylogeneticspythondnagenomics
beeware/toga
Dec 2022 - Jan 2023
A Python native, OS native GUI toolkit.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:1 review, 12 commits, 3 PRs in 10 days
Contributions summary:Markus primarily contributed to the Toga project by implementing features across multiple platforms. Their work included adding the `scroll_to_bottom` and `scroll_to_top` functionalities for `MultilineTextInput` across various operating systems (Windows, MacOS, Linux, and Android). They also updated the documentation for contributors and fixed documentation links. The user demonstrated the ability to adapt code for different platforms.
gui-toolkitpythonlinuxgui
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