Jos Koelewijn
Lead Developer Integrations
Gelderland, Netherlands
Summary
👤
Senior🎓
Top SchoolJos Koelewijn is a Lead Developer Integrations and cloud consultant with nine years of hands-on experience designing and automating Azure infrastructure and .NET solutions. He blends technical depth in PowerShell, Terraform and Azure with a teacher’s knack for clear explanations—formerly delivering PowerShell training and curriculum updates. Known for a collaborative, long-term focus on quality, he pairs creative problem solving with strong social skills to lead cross-functional integration projects at Eneco and clients like PGGM and DNB. As an active open-source contributor he enhanced AutomatedLab to support VMware and improved usability and security in local vulnerability tooling, showing practical impact on widely used automation and security projects. Based in Gelderland, he balances a pragmatic engineering mindset with enthusiasm for automation and people-first leadership. Outside of work he’s a father and husband who brings that same steadiness and allyship to team culture.
9 years of coding experience
1 year of employment as a software developer
Biomedische technologie (Biomedical engineering), Biomedische technologie (Biomedical engineering) at University of TwenteGodsdienst/Religieuze studies (Religious Studies), Godsdienst/Religieuze studies (Religious Studies) at Christelijke Hogeschool EdeGymnasium at Het Baarnsch Lyceum
Swedish
Github Skills (17)
vulnerability-scanners10
vmware10
security10
powershell10
scanning10
scripting9
apim9
api9
refactoring8
azure8
refactor8
microsoft-azure8
deploying7
windows7
automation7
Programming languages (8)
Github contributions (5)
vulmon/Vulmap
Feb 2021 - Feb 2021
Vulmap Online Local Vulnerability Scanners Project
Role in this project:
Security Engineer
Security EngineerContributions:10 commits, 1 PR, 3 comments in 1 day
Contributions summary:Jos primarily focused on enhancing the security and usability of the `vulmap` project, which involves local vulnerability scanning. Their contributions included code cleanup, refactoring for readability and maintainability, and fixing edge cases. They also added features like verbose logging and parameter help to improve user experience and debugging capabilities.
openvassecurityscannersvulnerabilityvulnerability-scanners
AutomatedLab/AutomatedLab
May 2017 - Jun 2017
AutomatedLab is a provisioning solution and framework that lets you deploy complex labs on HyperV and Azure with simple PowerShell scripts. It supports all Windows operating systems from 2008 R2 to 2022, some Linux distributions and various products like AD, Exchange, PKI, IIS, etc.
Role in this project:DevOps Engineer & Automation Engineer
DevOps Engineer & Automation EngineerContributions:13 commits, 4 PRs, 49 comments in 13 days
Contributions summary:Jos primarily contributed to enhancing the automation capabilities of the AutomatedLab project, focusing on VMware integration and expanding the supported virtualization engines. They implemented modifications to existing PowerShell scripts to enable VMware as a default virtualization engine, addressing compatibility issues by removing Hyper-V modules and incorporating folder support. Their work included bug fixes and code adjustments for VMware-specific modules, including the use of prepended VMware CmdLet names, as well as providing a basic VMware support testing script.
distributionsexchangeoperating-systemslab-machineautomatedlab
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