Johan Runsten
Backend Developer at Toxic Interactive Solutions
Jönköping, Jönköping County, Sweden
Summary
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SeniorJohan Runsten is a seasoned backend developer with 11 years of experience building robust server-side systems across .NET, C#, Python and C++. Based in Jönköping, Sweden, he has delivered enterprise web platforms and data-heavy analytics tooling for clients ranging from government and media to major airlines, often working with CMS platforms like Umbraco, Episerver and Sitecore. He combines hands-on implementation—binary data parsing, statistical platform development and multi-threaded desktop clients—with client-facing roles including consultancy leadership. Comfortable across languages and stacks, Johan has a track record of taking technical ownership of large projects and shipping production-ready solutions while continually learning and publishing work on GitHub.
11 years of coding experience
18 years of employment as a software developer
English, Swedish
Github Skills (130)
cms10
asp-net-core10
umbraco10
linux10
querystring10
csharp10
dotnet-core10
dotnet9
umbraco-v109
monogame9
text-detection9
cmake9
windows9
visual-studio9
x-plane9
Programming languages (16)
Github contributions (5)
toxicinteractive/actions
Jun 2022 - May 2026
Contains shared GitHub Actions actions.
Contributions:3 releases, 1 review, 31 pushes in 3 years 11 months
jrunestone/nixos-config
Jan 2024 - Apr 2026
Contributions:241 pushes, 8 branches in 2 years 3 months
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