Erwin Kroon
Software Engineer at GitHub
Gelderland, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolErwin Kroon is a pragmatic software engineer with 14 years of experience building business software, leading teams, and founding startups across the Netherlands. He blends hands-on backend work—recently contributing Parquet and Arrow IPC support to the roapi project—with product-minded leadership roles at organizations like Kadaster, Alliander and GitHub. Comfortable across languages and stacks (Clojure, Java, Kotlin, Ruby, JavaScript, AWS/Kubernetes), he excels at removing software bottlenecks that slow business velocity. Erwin has repeatedly moved teams from blockers to delivery, coached developers, and shipped operational platforms in energy and public-sector domains. He pairs technical depth with commercial experience from founding Powerup and Team529, making him effective at bridging engineering and business needs.
14 years of coding experience
19 years of employment as a software developer
MSc, Computer Science, Software Engineering, MSc, Computer Science, Software Engineering at University of Twente
English, Dutch
Github Skills (18)
arrow-keys10
fusion10
parquet10
rest-api10
rust10
arrows10
arrow-js10
sql9
api8
apim8
api-design8
web-application7
testing7
develop7
application7
Programming languages (15)
Github contributions (5)
roapi/roapi
Aug 2021 - Nov 2021
Create full-fledged APIs for slowly moving datasets without writing a single line of code.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 reviews, 6 commits, 6 PRs in 2 months
Contributions summary:Erwin primarily contributed to the backend functionality of the `roapi/roapi` repository, focusing on enhancing data encoding and API capabilities. They implemented support for Parquet file encoding, including necessary code changes in the `columnq` and `roapi-http` modules. Furthermore, the user added support for various Arrow IPC formats, demonstrating a focus on improving data handling and integration capabilities of the API. They also refactored and converted route tests into integration tests, contributing to improved code quality and maintainability.
pythonarrowin-memory-databasequery-frontendscolumnar
ekroon/adventofcode2020
Dec 2020 - Dec 2024
Advent of Code 2020 in Rust
Contributions:28 PRs, 92 pushes, 32 branches in 4 years 1 month
rustpyo3rust-lang
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