Wido Hollander
CTO at 42on
Venlo, Limburg, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolWido Hollander is a seasoned CTO and co-founder with two decades of hands-on experience building and operating large-scale hosting, networking, and cloud infrastructures. He led PCextreme from a few servers to a production-grade platform and now drives technology, strategy, compliance and M&A at Your.Online. A pragmatic open-source advocate, he contributes to major projects like Apache CloudStack and Libcloud, with notable work improving IPv6, networking and security in KVM-based clouds. He regularly consults and trains global teams on Ceph and distributed storage, blending deep datacenter expertise with practical operational know-how. Based in the Netherlands, he combines founder-level ownership with ongoing community leadership and public speaking at technology conferences.
15 years of coding experience
19 years of employment as a software developer
Informatica, Informatica (Software engineering) / Hogere opleiding Software engineer, Informatica, Informatica (Software engineering) / Hogere opleiding Software engineer at Hogeschool Utrecht
English, German
Github Skills (19)
kvm10
cloud-computing10
python10
apidoc10
networking10
iptables10
security10
aws-security-group10
api10
network-security-groups10
debian9
apache-cloudstack9
dns9
ipv69
bash8
Programming languages (16)
Github contributions (5)
apache/cloudstack
Aug 2012 - Sep 2022
Apache CloudStack is an opensource Infrastructure as a Service (IaaS) cloud computing platform
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:84 reviews, 202 commits, 94 PRs in 10 years 2 months
Contributions summary:Wido's contributions primarily revolve around enhancing the performance and reliability of the Apache CloudStack platform, specifically concerning networking and security. They implemented improvements to IPv6 handling within the KVM Agent, along with fixing bugs related to IPv6 and security group rules. The user also updated system scripts, addressed code formatting, and included changes to support advanced features like a Virtio RNG device and the handling of disk cache modes, and improved logging and security features.
pythonapache-cloudstackxcp-nghostingcloud-computing
apache/libcloud
Mar 2015 - Jul 2016
Apache Libcloud is a Python library which hides differences between different cloud provider APIs and allows you to manage different cloud resources through a unified and easy to use API.
Role in this project:Back-end Developer
Back-end DeveloperContributions:22 commits, 24 PRs, 27 comments in 1 year 4 months
Contributions summary:Wido primarily contributed to the development of cloud provider integrations within the Apache Libcloud project. They implemented and enhanced drivers for various cloud services, including AuroraCompute and AuroraObjects. Their contributions involved writing code to support new features, updating documentation, and ensuring compatibility with different cloud platforms. They also worked on adding support for multiple regions for the AuroraCompute driver and implementing an iterator for zones and records.
python-libraryapilibcloudpythonhides
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