Markus Kohlhase
Software Engineer at slowtec codingforfairness
Germany
Summary
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RockstarMarkus Kohlhase is a pragmatic software engineer with 15 years of experience building reliable back-end systems and full‑stack Rust and JavaScript applications from Germany. He is an active FLOSS contributor (flosse) known for low-level protocol work—implementing Modbus PDU serialization/deserialization in a tokio-based library—and for practical developer tools like a multi-language SLOC counter. Markus frequently bridges front-end and server concerns, adding examples and integrations for multiple Rust web frameworks and JavaScript benchmarks, and has contributed real-world device integrations for Mixxx DJ software. He favors clean, maintainable code and attention to byte-level correctness, combined with a taste for ergonomics such as CLIs and JSON/CSV outputs. Notably, his contributions span both performance-focused benchmarks and user-facing examples, showing depth across systems and UX.
15 years of coding experience
Github Skills (52)
application-framework10
yew10
javascript10
hid10
develop10
lib10
coffeescript10
back-end-development10
async10
app-framework10
data-serialization10
webpages10
rust-wasm10
io10
full-stack10
Programming languages (23)
Github contributions (5)
flosse/sloc
Jul 2012 - Apr 2021
simple tool to count SLOC (source lines of code)
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 reviews, 205 commits, 52 PRs in 8 years 10 months
Contributions summary:Markus primarily focused on building and extending the core functionality of the sloc tool. Their work involved adding new features like a command-line interface (CLI), support for various programming languages (C/C++, Java, PHP, Python, Go, Ruby, Crystal, etc.), and incorporating options for different output formats (JSON, CSV, and CLI table). Furthermore, the user made improvements to the codebase by refactoring and addressing counting issues, which increased the reliability and maintainability of the code.
count-tosloclineslines-of-codejavascript
flosse/rust-web-framework-comparison
Aug 2015 - Jan 2023
A comparison of some web frameworks and libs written in Rust
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:1 review, 252 commits, 119 PRs in 7 years 6 months
Contributions summary:Markus primarily contributed to adding and integrating various Rust-based web frameworks and libraries into the repository to compare their functionalities. They implemented "Hello World" examples for frameworks like Iron, Nickel, Rustful, Hyper, Tiny-http, Pencil, Seed, Willow, and Draco. The user also updated the project by adding seed and draco counter examples and generating the README.md file based on data.
rustweb-frameworkframeworkcomparison
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