Koen Hollander
Roze In Rood at Veiligheidsregio Zaanstreek-Waterland
North Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolKoen Hollander is a versatile IT professional and entrepreneur with 11 years of experience blending hands-on development, functional IT management and community-focused leadership. Currently studying Bedrijfskundige Informatica at NOVI while running his own company, he maintains production systems and apps for a regional safety authority where he also serves as functional beheerder, intranet editor, RCC-supporter and volunteer firefighter. A self-taught programmer and open-source contributor, he has updated example code for the widely-used Mollie PHP API client, showing attention to practical developer experience. Koen pairs technical skills across PHP, WordPress, Microsoft 365 and identity tooling with people-facing roles—teaching, coaching interns and leading volunteer initiatives—demonstrating rare comfort switching between code, operations and communications. Outside work he instructs pole dance and invests significant time in nonprofit governance, reflecting a hands-on, community-driven problem solver who doesn’t sit still.
11 years of coding experience
3 years of employment as a software developer
bachelor Bedrijfskundige informatica, bachelor Bedrijfskundige informatica at NOVI HogeschoolMiddelbaar Beroeps Onderwijs niveau 4 Applicatie- en mediaontwikkelaar, Middelbaar Beroeps Onderwijs niveau 4 Applicatie- en mediaontwikkelaar at ROC Kop van Noord HollandHbo Agile Scrum en DevOps, Hbo Agile Scrum en DevOps at LOIBasisonderwijs Basisonderwijs, Basisonderwijs Basisonderwijs at De piramideVMBO Handel en Administratie, VMBO Handel en Administratie at Van der Meij college
English, Dutch, English
Stackoverflow
1,717reputation
144kreached
59answers
31questions
Github Skills (13)
apim10
rest-api10
php10
api10
back-end-development9
json6
htaccess6
bots6
laravel-migration6
laravel-blade6
radio-buttons6
laravel6
discord6
Programming languages (10)
Github contributions (5)
mollie/mollie-api-php
Sep 2017 - Sep 2017
Mollie API client for PHP
Role in this project:
Back-end Developer
Back-end DeveloperContributions:21 commits, 21 PRs, 2 comments in 1 day
Contributions summary:Koen updated example files related to the Mollie API client for PHP. The commits involved modifying example code demonstrating various API functionalities, including payment creation, webhook verification, and recurring payments. The primary focus of the contributions was on updating and maintaining the example code, likely to reflect the latest API versions and provide users with clear usage examples. The changes touched upon multiple features of the API client.
api-clientapimolliepayment-servicepayment-methods
kloentje2/FiveM-MEOS
Sep 2020 - Sep 2021
Het echte MEOS, gemaakt door Koen Hollander
Contributions:21 commits, 7 pushes, 3 comments in 1 year
doorgardenbackbonejs
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