Johan Claesson
Teknikkonsult IT-Säkerhet at Landstinget Västmanland
Stockholm, Stockholm County, Sweden
Summary
👤
Senior🎓
Top SchoolJohan Claesson is an experienced IT security and UNIX specialist with over a decade of hands-on experience in Solaris, Linux and network infrastructure. Currently a Teknikkonsult IT-Säkerhet in Västmanland, he has led secure infrastructure work across DNS, SMTP, firewalls, proxies and SAN/NAS at organizations including Electrolux and Ericsson. His background spans large-scale Solaris deployments, DevOps practices and practical security engineering, combining deep systems administration with infrastructure design. Known for pragmatic problem-solving, he bridges legacy UNIX environments and modern security requirements while keeping operational reliability front and center. Based in Stockholm, he brings a steady consulting mindset and a knack for translating low-level networking details into auditable, business-ready solutions. Fun fact: beyond formal bios he playfully notes “I like cookies,” hinting at both a sense of humor and an appreciation for web fundamentals.
11 years of coding experience
5 years of employment as a software developer
Systems Engineering, Systems Engineering at Mid Sweden University
English
Github Skills (8)
erlang-otp10
erlang10
gleam10
otp10
elixir10
beam9
bash2
shell2
Programming languages (1)
Github contributions (2)
Gianfrancoalongi/bash_by_example
Dec 2015 - Dec 2015
Contributions:3 commits in 1 day
teachingshellisolatedbash
erlang/otp
Mar 2015 - May 2017
Erlang/OTP
Contributions:3 commits in 2 years 2 months
gleamerlangbeamerlang-otpelixir
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