Maarten Van Grootel
Software Developer at Page
Ottawa, Ontario, Canada
Summary
🤩
Rockstar🎓
Top SchoolMaarten Van Grootel is a versatile software developer with 13 years of experience building and managing complex web applications across Ruby on Rails, Java and C# stacks, currently contributing at Page after senior technical leadership roles at Shopify. He combines deep backend and API expertise—evidenced by contributions to high-profile open-source projects like Active Merchant and the Shopify API Ruby gem—with practical experience in payment gateway integrations and robust test coverage. His background in artificial intelligence (pattern recognition, machine learning and computer vision) and studies in linguistics and human perception give him a rare blend of systems engineering and human-centered insight. Known for pushing boundaries, he pairs hands-on coding with agile project management and architecture design, making him a creative, reliable asset for teams delivering production-grade systems.
13 years of coding experience
17 years of employment as a software developer
Master of Science (MSc) - Not Finished Artificial Intelligence, Master of Science (MSc) - Not Finished Artificial Intelligence at University of Groningen
German, French, Dutch, English
Stackoverflow
1,999reputation
132kreached
18answers
6questions
android
top-5%
gradle
top-5%
android-recyclerview
top-5%
Github Skills (28)
unit-testing10
shopify-api10
activeresource10
apidoc10
testing10
rspec10
payment-integration10
payment-gateway10
ruby10
api10
activemerchant10
test-unit10
unit-test10
api-design9
restful-api9
Programming languages (4)
Github contributions (5)
Shopify/shopify-api-ruby
Oct 2013 - Feb 2017
ShopifyAPI is a lightweight gem for accessing the Shopify admin REST and GraphQL web services.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:41 commits, 5 PRs, 8 pushes in 3 years 3 months
Contributions summary:Maarten contributed to the Shopify API Ruby gem by implementing and testing new features. They added functionalities for completing and canceling fulfillments, along with corresponding tests. The user also addressed a bug related to line item properties and bumped the version of the gem. Further, they refactored prefix setting and added tests for images and order risks.
adminrailshotel-bookingpolarisweb-services
activemerchant/active_merchant
Feb 2014 - Mar 2014
Active Merchant is a simple payment abstraction library extracted from Shopify. The aim of the project is to feel natural to Ruby users and to abstract as many parts as possible away from the user to offer a consistent interface across all supported gateways.
Role in this project:Back-end Developer / API Developer / Integration Engineer
Back-end Developer / API Developer / Integration EngineerContributions:5 commits in 27 days
Contributions summary:Maarten primarily focused on integrating the Mollie iDEAL payment gateway into the Active Merchant library. Their contributions involved developing modules for Mollie iDEAL, including helper and notification classes to handle payment processing. Additionally, the user improved the integration with error handling and fixing the status for iDEAL notifications. They also added tests for their implemented features.
ecommerceaimadyenpayment-processingpayment
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