Mikkel Johnsen
Adm. Dir at XMedicus Systems ApS
Copenhagen, Capital Region of Denmark
Summary
👤
Senior🎓
Top SchoolMikkel Johnsen is a seasoned Linux and server architect turned entrepreneur with over two decades of hands-on experience building high-availability web clusters, embedded systems, and cross-platform applications. He founded XMedicus Systems ApS to commercialize a medical management suite he originally developed for his father, now used across Danish healthcare from chiropractors to private hospitals. Comfortable from low-level C and SIM card OS work to C#, PHP, and modern DevOps tools like Docker, he blends deep systems knowledge (Kerberos, Samba, SNMP, HA load balancers) with product-minded engineering. Mikkel’s career started with Linux in 1995 and includes roles ranging from hospital IT support to technical leadership and company ownership, reflecting a rare combination of clinical domain insight and infrastructure expertise. He’s pragmatic, self-taught in computer science, and known for turning complex interoperability requirements (Edifact/EMessages) into reliable, supported products.
11 years of coding experience
9 years of employment as a software developer
autodidact, Computer Science, autodidact, Computer Science at Københavns Universitet - University of CopenhagenEgegårdStudent, Student at Nørre Gymnasium
Danish, English
Github Skills (180)
postgresql10
imap-client10
ecma10
dotnet10
sdk10
sql10
database10
cli10
data-provider10
android10
csharp10
jit10
wcf-client10
ios10
garbage-collector10
Programming languages (14)
Github contributions (5)
GSharpKit/GtkSharp
Jan 2019 - Aug 2024
.NET wrapper for Gtk and other related libraries
Contributions:18 pushes, 4 branches in 5 years 8 months
gtk
GSharpKit/GdlSharp
Jan 2015 - Dec 2020
Contributions:3 releases, 12 commits, 12 pushes in 5 years 11 months
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