Juhani Karppinen
Senior Software Developer, Information Security Specialist
Oulu, Mainland Finland
Summary
👤
Senior🎓
Top SchoolJuhani Karppinen is a senior software developer and information security specialist based in Oulu with over a decade of hands-on experience building DevSecOps pipelines, fuzzing tooling, and protocol-focused QA for security products. He combines practical expertise in Python and Rust with a strong infra background—optimizing CI/CD, virtualization stacks, and release engineering for fuzz testing platforms. A former staff engineer at Synopsys/Black Duck, he has shepherded automation for complex protocol test suites (WLAN, Bluetooth, ZigBee) and led student-focused CTF and guest-lecturing initiatives that bridge industry and academia. Juhani also brings entrepreneurial and event-production experience as a founder and DJ, applying the same meticulous staging and technical planning skills to both live events and secure software delivery. He holds an MSc in Information Processing Science and enjoys low-level tinkering on Linux—often blending scripting, fuzzing, and audio/lighting tech in side projects. Colleagues value him for pragmatic security-first engineering that scales from startup e-commerce stacks to enterprise fuzzing infrastructure.
11 years of coding experience
11 years of employment as a software developer
Vocational Qualification in Business Information Technology Information Technology, Vocational Qualification in Business Information Technology Information Technology at Savo vocational schoolMaster’s Degree Information Processing Science, Master’s Degree Information Processing Science at University of Oulu
Finnish, English, Swedish
Github Skills (50)
gulp10
discord9
xmpp9
facebook-messenger9
matrix9
twitch9
irc-server9
telegram-bot9
rocketchat9
vk9
gitter9
whatsapp9
microsoft-teams9
irc9
php8
Programming languages (9)
Github contributions (5)
jkarppinen/fb-graph-api-parse
Feb 2015 - Oct 2019
Small python-based parser converting from Facebook Graph API output to XLS.
Contributions:4 PRs, 9 pushes, 5 branches in 4 years 8 months
apixlspythonargparsefacebook
jkarppinen/guessthecolor
Mar 2017 - Oct 2019
An irssi script to deal cards for 'Guess the color' game.
Contributions:6 PRs, 6 pushes, 3 branches in 2 years 6 months
guessdealirssicolor-game
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