Vasilis Koulis
Application Support Engineer
Municipal Unit of Cholargos, Attica, Greece
Summary
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Rockstar🎓
Top SchoolVasilis Koulis is an Application Support Engineer with 10 years of software and DevOps experience across telecom, security, and AI-focused companies, now supporting mission-critical systems at G4S Telematix. He combines backend protocol expertise—demonstrated by meaningful contributions to the popular Traccar GPS tracking project, notably improving Teltonika protocol decoding and geofence/power-cut detection—with a robotics MSc that informs his systems-thinking approach. Comfortable shipping Java backend fixes and tackling operational issues, he has moved between hands-on engineering and DevOps roles at Vodafone, PROBOTEK, and other firms. Based in Athens, he’s an open-source-minded engineer who blends practical production support with a curiosity for IoT and embedded telemetry.
10 years of coding experience
6 years of employment as a software developer
Bachelor of Technology - BTech, Computer Software Engineering, Bachelor of Technology - BTech, Computer Software Engineering at Technological Educational Institute of Thessaly. / TEI of ThessalyMaster of Science - MS, Robotics and Autonomous Systems, Master of Science - MS, Robotics and Autonomous Systems at University of Lincoln
Stackoverflow
303reputation
690kreached
5answers
5questions
Github Skills (12)
gps10
traccar10
javas10
gps-tracking10
back-end-development10
java10
camera6
pandas6
dictionary6
svn6
google-maps6
numpy6
Programming languages (14)
Github contributions (5)
traccar/traccar
Mar 2025 - Mar 2025
Traccar GPS Tracking System
Role in this project:
Back-end Developer
Back-end DeveloperContributions:3 PRs, 13 comments in 22 days
Contributions summary:Vasilis's commits primarily focus on enhancing the Teltonika protocol decoder within the Traccar GPS tracking system. Their contributions include implementing features like auto geofence alarms and power cut detection, while also refining existing functionality by adjusting geofence limitations to FMB devices. The user frequently addressed code formatting issues, attribute name corrections, and line length problems. These activities involved making changes within the Java-based decoder code, demonstrating their involvement in backend system development and protocol handling.
traccartrackinggpsgps-trackinglocation-tracking
bkbilly/service-update-helper
Oct 2020 - Feb 2023
Contributions:1 release, 17 pushes, 1 branch in 2 years 4 months
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