Dario Heinisch
Lead Software Engineer at Unusual Whales
Berlin Metropolitan Area Germany
Summary
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SeniorDario Heinisch is a Lead Software Engineer based in Berlin with 8 years of experience building distributed systems, data pipelines and market-focused platforms. He currently architects and ships production services at Unusual Whales using Rust, Elixir, Kafka, Flink and PostgreSQL, combining low-latency stream processing with durable storage. Passionate about financial markets—especially equities—he applies systems thinking to turn market data into reliable, scalable products. An active open-source contributor, he’s improved Python tooling in the widely used isort project by adding cross-version flags, reorganizing standard library lists, and fixing import-ordering bugs. Known for a pragmatic “break prod” philosophy, he balances bold shipping with maintainability and operational rigor.
8 years of coding experience
German, English
Github Skills (7)
isort10
python10
cli10
formatters7
autoformat7
formater7
formatter7
Programming languages (12)
Github contributions (5)
PyCQA/isort
Jul 2019 - Aug 2019
A Python utility / library to sort imports.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:7 commits, 1 PR, 9 comments in 9 days
Contributions summary:Dario primarily contributed to the `isort` project by implementing new features and addressing existing functionalities. They added a Python version flag, enhancing the utility's compatibility across different Python environments. The user also refactored the project's structure by creating separate files for standard library lists, ensuring improved maintainability and organization. Additionally, the user fixed an import ordering issue.
linterpythonpython-utilitysort-importsauto-formatter
Zarathustra2/TradeRepublicApi
Jan 2021 - Nov 2021
Unofficial trade republic API
Contributions:22 commits, 12 PRs, 22 pushes in 9 months
apitradetrade-republicfinancerepublic
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