Karin Gerritsen
Director at Semper IT inc.
Calgary, Alberta, Canada
Summary
👤
Senior🎓
Top SchoolKarin Gerritsen is a director and software leader with over 12 years of experience helping Canadian non-profits streamline sustainable workflows so they can focus on mission delivery. She combines technical stewardship with practical product work as co-author and maintainer of key CiviCRM extensions, including Canadian Tax Receipts, iATS Payments, and the Drupal Webform CiviCRM module. Her contributions to the CiviCRM core test suite—adding tests around line items, contributions, and sales tax—demonstrate a strong focus on data integrity and reliable payment workflows. Based in Calgary, she brings an uncommon blend of academic rigor (PhD in Biomechanics) and hands-on engineering leadership cultivated through long-tenured consultancy at Semper IT. Colleagues rely on her to translate complex fiscal and compliance requirements into stable, test-covered integrations. She is especially adept at bridging the needs of mission-driven organizations with robust open-source tooling.
12 years of coding experience
3 years of employment as a software developer
Doctorandus (Drs), Bewegingswetenschappen/Biomechanics, Doctorandus (Drs), Bewegingswetenschappen/Biomechanics at Vrije Universiteit Amsterdam (VU Amsterdam)Doctor of Philosophy (PhD), Medical Science/Biomechanics, Doctor of Philosophy (PhD), Medical Science/Biomechanics at University of Calgary
Stackoverflow
167reputation
115kreached
1answer
0questions
Github Skills (9)
phpunit10
test-automation10
php10
data-integrity10
testing10
crm9
mysql8
pdf-generation6
dompdf6
Programming languages (6)
Github contributions (5)
civicrm/civicrm-core
Apr 2014 - Sep 2020
CiviCRM (Core Application and Framework)
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:8 reviews, 58 commits, 50 PRs in 6 years 5 months
Contributions summary:Karin's primary contributions focused on enhancing the test suite for the CiviCRM core application. They added new tests to verify data integrity, specifically related to line items, contributions, and sales tax calculations within the membership module. The commits included modifications to existing test cases and the addition of new test scenarios to cover various edge cases and functionalities. These additions improved the robustness and reliability of the CiviCRM core.
backbonejscivicrm
KarinG/DataBC
May 2016 - Feb 2025
CiviCRM Extension that uses DataBC Geographic Data and Services to GeoCode British Columbia (Canada) addresses
Contributions:5 releases, 5 PRs, 53 pushes in 8 years 9 months
addressesdatabcbritishgeocodegeographic-data
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