Johannes Sjölund
System Specialist at Swedish Pensions Agency
Luleå, Sweden
Summary
👤
Senior🎓
Top SchoolJohannes Sjölund is a platform and infrastructure engineer with 15 years of experience, currently focused on deploying and hardening enterprise Kubernetes at the Swedish Pensions Agency. He builds air-gapped SUSE Rancher clusters with Terraform, Ansible and Helm, manages lifecycle for Rancher, Istio, Kyverno and Flux, and performs CIS-based security audits and certificate hardening. Previously at RISE he developed data-center orchestration and GPU-enabled Kubernetes services, shipping GPU bin-packing, virtual clusters for Ray, and demos for Llama-2 and Stable Diffusion on CUDA containers. He pairs low-level systems knowledge—evidenced by contributions integrating Bullet physics into the libGDX engine—with practical ops skills across VMware, OpenStack, Ceph and self-hosted GitLab. Based in Luleå, Sweden, he blends research-driven experimentation with production-grade automation and thorough documentation for multi-tenant, secure compute platforms.
15 years of coding experience
6 years of employment as a software developer
Master's degree, Computer Engineering, Master's degree, Computer Engineering at Luleå University of Technology
Github Skills (6)
javas10
collision-detection10
game-development10
java10
3d10
optimization8
Programming languages (9)
Github contributions (5)
libgdx/libgdx
Sep 2015 - Oct 2016
Desktop/Android/HTML5/iOS Java game development framework
Role in this project:
Back-end Developer
Back-end DeveloperContributions:10 commits, 19 PRs, 40 comments in 1 year 1 month
Contributions summary:Johannes primarily contributed to the Bullet physics engine integration within the libGDX game development framework. Their work focused on implementing and refining features related to triangle raycasting, essential for accurate collision detection within 3D models. They also made modifications to the underlying Bullet code, including making btDbvtNode and btDbvtAabbMm poolable and adding getters. These changes demonstrate expertise in physics engine integration and optimization within a game development context.
gamejava-game2dhtml5ios
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