Martin Schmelzer
Datenmanager
Essen, North Rhine-Westphalia, Germany
Summary
👤
Senior🎓
Top SchoolMartin Schmelzer is a Datenmanager and data scientist with 11 years of experience applying SQL Server programming, R, and Python to clean, automate and deliver reproducible analytics for public sector and academic settings. Based in Essen, he combines hands-on data engineering at Stadt Gelsenkirchen with a history of teaching advanced R for econometricians and producing course materials at Universität Duisburg-Essen. His open-source work includes small but practical contributions—browser extensions for StackExchange usability and UI enhancements for an R econometrics companion—plus maintenance tasks in Homebrew casks that show attention to reliable build and release automation. That blend of academic rigor, production-focused automation, and user-facing tooling makes him adept at turning complex statistical workflows into dependable, usable systems.
11 years of coding experience
B.S.c Econ. Volkswirtschaftslehre, B.S.c Econ. Volkswirtschaftslehre at The University of BonnM.Sc. Economics Volkswirtschaftslehre, M.Sc. Economics Volkswirtschaftslehre at University of Duisburg-Essen
Stackoverflow
23,543reputation
1.3mreached
422answers
53questions
colors
top-5%
css
top-5%
latex
top-5%
background-color
top-5%
shiny
top-5%
r
top-1%
Github Skills (30)
javascript10
package-management10
r10
css10
homebrew-cask10
knitr10
homebrew10
automation10
front-end-development10
rmarkdown10
automations10
plotly10
colors9
markdown9
ruby9
Programming languages (8)
Github contributions (5)
Homebrew/homebrew-cask-versions
Sep 2017 - Jun 2018
💀 Alternate versions of Casks (deprecated)
Role in this project:
Automation Engineer / Build & Release Engineer
Automation Engineer / Build & Release EngineerContributions:11 commits, 15 PRs in 9 months
Contributions summary:Martin primarily focused on updating the `rstudio-preview` cask within the Homebrew Cask repository. Their commits consistently involved updating the version number, SHA256 checksum, and, in one instance, the download URL, indicating a role in maintaining and automating the availability of software packages. They ensured the cask definition reflected the latest versions of the RStudio preview software, which demonstrates their responsibility for keeping the software build up-to-date and accessible. The frequent updates and URL adjustments highlight a focus on build automation and package management.
caskscaskhomebrewalternate
mca91/EconometricsWithR
Mar 2018 - Mar 2018
📖An interactive companion to the well-received textbook 'Introduction to Econometrics' by Stock & Watson (2015)
Role in this project:Front-end Developer
Front-end DeveloperContributions:7 commits in 5 days
Contributions summary:Martin focused on enhancing the user interface of the R-based econometric textbook companion by adding functionality for code block copying. Their commits added a copy button feature to code blocks using JavaScript (hideOutput.js). They also updated the stylesheet (style.css) to incorporate the necessary styling for the new copy button and made minor adjustments to the styling and button class name.
econometricsintroduction-to-rapplied-economicslinear-modelsbookdown
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