Karl Hesselgren
Senior Software Engineer at Kaisa
Uppsala, Uppsala County, Sweden
Summary
👤
Senior🎓
Top SchoolKarl Hesselgren is a Senior Software Engineer based in Uppsala with 11 years of hands-on experience building full-stack and backend systems across Java, PHP, Go, JavaScript/TypeScript and Python. He progressed from support and customer-facing roles into development and architecture, most recently serving as Software Architect at Pricer before moving into a senior engineering role at Kaisa, demonstrating strong domain knowledge in scalable, production-grade systems. Karl is self-taught and enjoys solving complex problems with pragmatic, stable solutions, often working with Docker, NGINX and Linux in cloud and legacy environments. Outside of work he helped organize local Linux hackathons with Uppsala Linux User Group, reflecting a long-standing commitment to open source culture and community-driven learning.
11 years of coding experience
10 years of employment as a software developer
Västerås Fria Gymnasium
English, Swedish
Github Skills (26)
cicd10
gitlab10
vue10
bitbucket10
golang10
devops10
npm-registry9
git-server9
gitea9
go9
libtcod9
github8
git8
gogs8
android7
Programming languages (5)
Github contributions (5)
iszla/gameprogrammingadventures
Apr 2020 - Sep 2020
Archive of the gameprogrammingadventures.org tutorials
Contributions:10 commits, 4 PRs, 8 pushes in 5 months
gamearchive
iszla/adventofcode
Dec 2015 - Dec 2017
Contributions:17 pushes, 3 branches in 2 years
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