Jaco Kroon
Financial Manager at JOKO cosmetics
South Africa
Summary
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RockstarJaco Kroon is a financial manager with 15 years of professional experience based in South Africa, combining financial stewardship with hands-on technical contributions to open-source telecom projects. While leading finances at JOKO cosmetics, he has contributed back-end fixes and security improvements to high-profile projects like ppp-project/ppp and Asterisk, addressing RADIUS accounting resilience, file-permission security, and SIP/transport edge cases. This blend of finance leadership and practical systems-level engineering suggests a pragmatic problem-solver comfortable with both operational controls and low-level technical detail. Known for quietly improving reliability and accounting accuracy in legacy networking code, he brings a methodical, detail-oriented approach to organizational finance and technical collaboration.
15 years of coding experience
Github Skills (19)
ppp10
asterisk10
accounting10
c1110
voip10
networking10
security10
sip10
c1710
sips10
radius10
pbx10
authentication9
linux9
user-authentication9
Programming languages (5)
Github contributions (5)
ppp-project/ppp
Jul 2021 - Dec 2022
Paul's PPP Package: PPP daemon and associated utilities | Official GitHub repo: https://github.com/ppp-project/ppp
Role in this project:
Back-end Developer
Back-end DeveloperContributions:51 reviews, 5 commits, 20 PRs in 1 year 4 months
Contributions summary:Jaco primarily focused on enhancing the PPP daemon and associated utilities, specifically addressing issues related to RADIUS authentication and accounting. They implemented changes to improve error handling, such as allowing RADIUS accounting to recover from missed start/stop frames. Furthermore, the user addressed security concerns in file permissions and expanded byte count statistics for more accurate accounting data. They also added functionality to pass the ipparam to scripts.
eappppipv4pppoeradius
asterisk/asterisk
Apr 2016 - Nov 2022
The official Asterisk Project repository.
Role in this project:Back-end Developer
Back-end DeveloperContributions:15 reviews, 144 commits, 7 PRs in 6 years 8 months
Contributions summary:Jaco primarily contributed to the Asterisk project's core and channel functionalities. They focused on resolving bugs related to hangup causes, and made improvements to the chan_sip module, ensuring its compatibility with non-UDP transports and handling of guest users over TCP. Additionally, the user added a 'regcontext' option for confbridge bridge profiles. They also contributed to enabling native Packet-Loss Concealment (PLC) for supporting codecs and fixing the AMI/HTTP mechanism.
pythonasterisklinuxpbxsip
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