Erik Schierboom
Senior Software Engineer at Cito
Gelderland, Netherlands
Summary
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Rockstar🎓
Top SchoolErik Schierboom is a Senior Software Engineer from the Netherlands with 13 years of experience building resilient back-end systems and developer tooling, currently at Cito. He blends deep .NET expertise (C#, F#, ASP.NET Core) with TypeScript and SQL, and a strong focus on testing and automation—evident from contributions to xUnit, RestSharp and AutoFixture. As Head of Open-Source at Exercism he shaped the platform’s backend, developer experience and language tracks while also improving CI/DevOps and localization for popular libraries like Humanizer. He frequently contributes practical fixes and features across well-known ecosystems, from asynchronous HTTP improvements to culture-aware unit tests, showing attention to robustness and internationalization. Based in Gelderland, Erik pairs a master’s in computer science with a long history of open-source collaboration and enjoys learning new languages, both human and programming.
13 years of coding experience
15 years of employment as a software developer
Master Computer Science, Master Computer Science at Radboud UniversityBachelor Computer Science, Bachelor Computer Science at HAN University of Applied SciencesLudgercollege
English, German
Stackoverflow
16,478reputation
2.0mreached
209answers
23questions
mysql
top-5%
async-await
top-1%
naming-conventions
top-5%
asynchronous
top-1%
svn
top-5%
duplicates
top-5%
Github Skills (74)
testing10
fakerjs10
asp-net10
automation10
build-automation10
async-await10
rest-api10
async10
dotnet10
faker10
dockers10
clojure10
localization10
test-automation10
test-driven-design10
Programming languages (83)
Github contributions (5)
exercism/v3
Dec 2019 - Jan 2021
The work-in-progress project for developing v3 tracks
Role in this project:
Back-end Developer
Back-end DeveloperContributions:492 reviews, 683 commits, 1390 PRs in 1 year 1 month
Contributions summary:Erik primarily contributed to the implementation and maintenance of C# exercises, making modifications to the exercise structure and content. Their work involved moving example files, fixing rounding errors, updating exercise formats, and implementing a new exercise. The user updated the .NET framework and associated packages, and updated the test names to be plural. They also contributed to adding test skips and implementing a new feature with a test.
in-progresstracksdevelopingwork-in-progress
exercism/clojure
Feb 2020 - Nov 2021
Exercism exercises in Clojure.
Role in this project:Back-end Developer
Back-end DeveloperContributions:170 reviews, 88 commits, 246 PRs in 1 year 8 months
Contributions summary:Erik primarily contributed to the exercism/clojure repository by fixing typos, adding stubs, and updating exercise files. They also focused on improving the structure and content of existing exercises, including fixing an issue in the crypto-square exercise. Additionally, the user updated the two-fer exercise and modified test files, indicating a focus on maintaining and refining the Clojure exercises.
exercism-exercisesexercism-trackclojurescriptlispexercism
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