Johan Andersson
Senior Software Developer at Modnitek AB
Uppsala, Uppsala County, Sweden
Summary
👤
Senior🎓
Top SchoolJohan Andersson is a senior software developer and independent contractor based in Uppsala with 18 years of experience delivering high-assurance and enterprise systems across finance, government, and defense sectors. He is skilled in C#, C++, .NET Core/Framework, SQL Server and has led technical teams as architect and scrum master on security-critical projects involving smart card certificate handling and player account management. As a freelance engineer he builds B2B EDI and invoicing solutions and has hands-on experience modernizing legacy systems with Azure and web technologies like ASP.NET Web API and AngularJS. Johan’s background also includes low-level work such as a Windows RAM-disk driver prototype and device-driver development, reflecting a rare full-stack-to-kernel breadth. He is not available for employment and accepts freelance engagements only, with new assignments deferred until August 2025. Colleagues describe him as a pragmatic problem-solver who thrives on correctness and dependable delivery in high-assurance contexts.
18 years of coding experience
14 years of employment as a software developer
Systemvetenskap, Systemvetenskap at Uppsala universitet
Swedish, English, German
Github Skills (57)
read-write10
net-library10
openxml10
interop10
excel10
biff10
azure-cosmos-db9
dotnet9
xlsx9
java9
python9
csharp9
cpp9
kotlin8
cosmos8
Programming languages (9)
Github contributions (5)
nja/advent-of-code
Dec 2021 - Dec 2024
Contributions:69 pushes, 18 branches in 3 years 1 month
nja/advent_of_code_2020
Dec 2020 - Oct 2021
Contribute solutions to Advent of Code and be inspired by others
Contributions:23 pushes, 2 branches in 10 months
javapythoncpp
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