Jari Matilainen
Developer & Business Process Monitoring Specialist at iStone AB
Stockholm, Stockholm County, Sweden
Summary
🤩
Rockstar🎓
Top SchoolJari Matilainen is a seasoned developer and business process monitoring specialist based in Stockholm with 11 years of professional experience building reliable operational tooling. He designs and implements Java-based services for IBM i environments—such as MessageMonitor and AS400Proxy—to proactively monitor message queues, subsystem health and job queues, and integrates those checks with Nagios for enterprise alerting. Jari’s contributions to the Irssi open-source client and script repository show full-stack comfort, from fixing script-level bugs to enhancing core IRC client behaviors like nick matching and rawlog handling. He combines hands-on systems programming with practical operations knowledge, having delivered custom Nagios checks for clients like Giesecke & Devrient and supported Nordic enterprises at IBM. Known for pragmatic problem-solving, he often bridges legacy platforms (AS/400) and modern monitoring practices to make business processes auditable and resilient.
11 years of coding experience
Mälardalens högskola / Mälardalen University
Github Skills (18)
configuration-management10
c1110
perl10
c1710
script10
irs10
management10
irssi10
irc10
networking9
text-formatting9
text-format9
version-control9
fileio8
file-operations8
Programming languages (13)
Github contributions (5)
irssi/scripts.irssi.org
Mar 2018 - Sep 2022
Script Repository for Irssi
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:15 reviews, 53 commits, 51 PRs in 4 years 6 months
Contributions summary:Jari primarily focused on the `buf.pl` script, implementing and fixing various aspects of its functionality. This included fixing indentation, removing a NUL byte, updating the `%IRSSI` hash, and adjusting error messages. The user also made changes to the `toggle_hidelevel.pl` script, modifying its code and addressing warnings. These changes suggest a developer who works across multiple aspects of the Irssi scripts.
irssi
irssi/irssi
Jun 2014 - Sep 2022
The client of the future
Role in this project:Back-end Developer
Back-end DeveloperContributions:6 reviews, 73 commits, 71 PRs in 8 years 3 months
Contributions summary:Jari primarily contributed to the core logic and settings of the Irssi IRC client. Their work involved adding features such as the ability to configure channel rejoin behavior, modify the highlighting of nick matches, and adding the functionality to create directories in the rawlog file system. They also addressed bugs in the client's nick matching logic and added enhancements to the network list output.
irssirustirc-clientsaslirc-protocol
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