Geert Janssens
CISO Enterprise Architect at Mourik
Netherlands
Summary
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RockstarGeert Janssens is a CISO and Enterprise Architect based in the Netherlands with 15 years of experience shaping information security and enterprise architecture for mission-critical organizations. He currently leads EA and security at Mourik after a long tenure as CISO/Architect at Nederlands Loodswezen where he drove SOA design, migrations of 24x7 pilot operations, and "working under architecture" across scrum teams. Geert combines strategic leadership with hands-on delivery experience from roles in global IT projects (IAM, network infrastructure, Oracle EBS) and infrastructure/operation migrations. Unusually for a security executive, he is an active open-source contributor to well-known projects like SWIG and GnuCash, working on C/C++ bindings and Guile integration and improving test suites and GUI features. He is valued for translating complex technical requirements into practical, auditable systems and also contributes governance perspective through advisory board roles.
16 years of coding experience
24 years of employment as a software developer
Dutch, English
Github Skills (22)
debug10
c-language10
integrate10
lib10
accounting-software10
gtk10
front-end-development10
scheme10
guile10
frontend-development10
swig10
c-programming-language10
i18n-node9
test-automation9
i18next9
Programming languages (13)
Github contributions (5)
Gnucash/gnucash
Dec 2009 - Jan 2023
GnuCash Double-Entry Accounting Program.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:263 reviews, 2816 commits, 104 PRs in 13 years 3 months
Contributions summary:Geert primarily focused on adding features and fixing bugs within the core accounting software's GUI (specifically the payment window, and invoice and bill features). They implemented features, refactored code blocks, and fixed bugs related to currency, transaction dates, account selection, and the handling of user preferences and file selections. The user's contributions included modifications to GUI elements, adding functionality to business features and implementing improvements to the user experience.
accountingdouble-entry-accountingdoublegnucash
swig/swig
Apr 2018 - Apr 2018
SWIG is a software development tool that connects programs written in C and C++ with a variety of high-level programming languages.
Role in this project:Back-end Developer & Guile Specialist
Back-end Developer & Guile SpecialistContributions:7 commits, 2 PRs, 8 comments in 4 days
Contributions summary:Geert primarily focused on enhancing the SWIG project's Guile integration, demonstrated through modifications to interface files, and test suites. Their work included updating the Guile interface to support Guile 2.0, and later dropping support for older versions. They also made significant changes to the test suite, addressing deprecation warnings and fixing issues, demonstrating a commitment to code quality and compatibility within the Guile ecosystem. Furthermore, they streamlined the Guile interface by removing the -gh interface, opting to use the scm interface instead.
cppwindowshigh-levellinuxprogramming-languages
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