Robin Karlberg
Penetration Tester
Malmo, Sweden
Summary
🤩
Rockstar🎓
Top SchoolRobin Karlberg is a penetration tester with a decade of hands-on experience in offensive security and a parallel interest in software development, currently testing systems at Shelltrail and running secure file-sharing startup Transfer.zip. He has a track record at Sentor Managed Security Services and practical discipline from service in the Swedish Armed Forces, combining structured operational rigor with red-team creativity. An active CTF competitor who has represented Sweden and the Bumbodosan team in top-tier contests, he brings real-world exploit experience and rapid problem-solving under pressure. Based in Malmö, Robin also builds useful web projects on the side, reflecting his blend of applied security and pragmatic engineering. Not obviously visible from titles alone, he leverages entrepreneurship to translate vulnerability findings into user-focused, secure solutions.
10 years of coding experience
Gymnasieexamen Teknikprogrammet Informations- och medieteknik, Gymnasieexamen Teknikprogrammet Informations- och medieteknik at Nacka GymnasiumThe Faculty of Engineering at Lund University
Swedish, English
Github Skills (25)
startup9
coding6
gdpr6
pipe6
cybersecurity6
browser6
machine-learning6
utility5
child-process5
privacy5
ftps5
artificial-intelligence5
open-source4
ai4
ssh3
Programming languages (3)
Github contributions (5)
robinkarlberg/transfer.zip-web
May 2023 - Apr 2025
Transfer files securely between browsers using WebRTC data channels and more
Contributions:7 PRs, 503 pushes, 20 branches in 1 year 10 months
robinkarlberg/transfer.zip-blog-test
Jan 2024 - Jul 2024
Contributions:5 pushes, 1 branch in 6 months
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