Fredrik Lönnegren
Senior Software Engineer - Kubernetes Infrastructure at SUSE
Stockholm, Stockholm County, Sweden
Summary
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Rockstar🎓
Top SchoolFredrik Lönnegren is a Senior Software Engineer based in Stockholm with eight years of experience building cloud-native and infrastructure tooling for Kubernetes and large-scale services. At SUSE he designs and implements deployment tools for immutable OSes running Rancher, K3s and RKE2, bringing deep operational knowledge of container runtimes and cluster lifecycle. Previously he modernized registry systems at Internetstiftelsen, migrating monolithic Perl to Go microservices and deploying on AWS ECS/Fargate while implementing DNS synchronization (RFC7477) in production. His background spans full‑stack .NET development, CI/CD, observability and performance tuning from earlier roles, giving him strong end-to-end delivery instincts. An active contributor to open-source ecosystems, he added multi-source package support to the well-known Paket dependency manager, showing an aptitude for extending core tooling. He combines pragmatic engineering with a systems-level perspective rooted in a Computer Science degree from KTH.
8 years of coding experience
9 years of employment as a software developer
Bachelor of Science - BS, Computer Science, Bachelor of Science - BS, Computer Science at KTH Royal Institute of Technology
Swedish, English
Stackoverflow
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Github Skills (10)
net10
asp-net10
git10
fsharp10
dotnet10
package-management10
dotnet-new9
nuget9
package-manager8
github8
Programming languages (13)
Github contributions (5)
fsprojects/Paket
Jan 2018 - Mar 2018
A dependency manager for .NET with support for NuGet packages and Git repositories.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:18 commits, 4 PRs, 7 comments in 1 month
Contributions summary:Fredrik primarily focused on implementing features related to adding support for different package sources within the Paket dependency manager. Their commits involve creating new commands and extending the core functionality to handle Git, GitHub, Gist, and HTTP sources. The code changes include modifications to the `PublicAPI.fs`, `Commands.fs`, and `DependenciesFile.fs` files, indicating they were working on the core logic for fetching and managing dependencies from various locations. They also implemented tests.
repositoriesdotnetfsharpmonopackage-manager
frelon/scx
May 2024 - Mar 2025
sched_ext schedulers and tools
Contributions:31 pushes, 27 branches in 9 months
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