Martijn Van Der Kleijn
Chair Of The Board at HCS Company
Leiden, South Holland, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolMartijn Van Der Kleijn is a seasoned infrastructure and DevOps engineer with 16+ years of experience designing, automating, and operating large-scale OpenStack, Ceph, and container platforms. Currently Chair of the Board at Stichting OpenCommit and a Senior DevOps Engineer at HCS Company, he blends hands-on automation (Ansible, MAAS, Docker) with platform architecture and governance for open source sustainability. He contributes to well-known projects such as stretchr/testify, adding robust HTTP status assertions and test automation improvements, and founded the Wolf CMS project, demonstrating long-term OSS stewardship. Comfortable in both hardware-to-serverless stacks and software development in Go and Python, he often tackles migration and zero-downtime challenges in production environments. Outside work he experiments with home infra (Raspberry Pi), self-hosted mail/web stacks, studies Chinese and Japanese, and plays strategy games like Go, highlighting a practical curiosity that fuels his engineering creativity.
16 years of coding experience
15 years of employment as a software developer
BSc Information Systems and Information Technology, BSc Information Systems and Information Technology at De Haagse Hogeschool / The Hague University of Applied SciencesMEAO Economic & Administrative Education, MEAO Economic & Administrative Education at Holtlant College
Spanish, German, English, Dutch
Github Skills (7)
assertion10
http10
go10
testing10
golang9
mocking8
toolkits7
Programming languages (19)
Github contributions (5)
stretchr/testify
Apr 2020 - Jul 2020
A toolkit with common assertions and mocks that plays nicely with the standard library
Role in this project:
Back-end Developer / Test Automation Engineer
Back-end Developer / Test Automation EngineerContributions:1 review, 7 commits, 9 PRs in 3 months
Contributions summary:Martijn primarily contributed to the project by implementing and testing new HTTP status code assertions, expanding the testing capabilities of the `testify` library. They added a new `HTTPStatusCode` assertion and integrated it into the test suite. Additionally, the user made changes to support the new assertion, refactored test files, and updated existing test cases to ensure proper functionality, indicating their proficiency in unit testing. The user also ran a `go generate` command, and cleaned up code, showing they're maintaining the project.
golangassertionstestingtoolkittestify
mvdkleijn/ansible-maas
May 2017 - Apr 2020
Contributions:2 releases, 7 commits, 4 PRs in 2 years 11 months
ansible-dynamic-inventoryapiinventoryansiblemaas
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