Marcel Apfelbaum
Software Engineer - AR Glasses SW Systems at Meta
Switzerland
Summary
🤩
Rockstar🎓
Top SchoolMarcel Apfelbaum is a software engineer with 11 years of experience specializing in virtualization, Linux device drivers, and distributed systems, currently working on AR glasses software systems at Meta in Switzerland. He has deep kernel- and QEMU-level expertise from multiple roles at Red Hat and contributions to the widely used Kata Containers project, where he improved QEMU integration, memory hotplugging, and CI robustness. Marcel’s background spans from embedded and driver work at Mellanox to architecting platforms at a startup, giving him a rare blend of low-level systems craft and higher-level software architecture. He routinely tackles complex problems like PCI/NUMA hotplug, virtio vhost-user integration, and scaling device attachment in VMs. Known for pragmatic engineering, he improves build and CI processes to make tooling repeatable and reliable. He holds a BSc in Computer Science from Technion and brings both production-grade open-source contributions and enterprise software delivery experience.
11 years of coding experience
18 years of employment as a software developer
BSc, Computer Science, BSc, Computer Science at Technion-Machon Technologi Le' Israel
English, Hebrew, Romanian
Stackoverflow
1reputation
0reached
1answer
0questions
Github Skills (24)
container10
docker10
qemu10
testing10
bash10
dockers10
cicd10
automation10
go10
build-automation10
virtualization10
kata-containers10
automations10
kvm9
linux9
Programming languages (7)
Github contributions (5)
kata-containers/tests
Jun 2021 - Oct 2021
Kata Containers tests, CI, and metrics
Role in this project:
DevOps Engineer
DevOps EngineerContributions:44 reviews, 16 commits, 11 PRs in 4 months
Contributions summary:Marcel primarily focused on improving the Continuous Integration (CI) and testing infrastructure for the Kata Containers project. Their contributions included refactoring CI scripts, enhancing test execution, and improving the overall reliability of the testing framework. They addressed issues related to service restarts, dependency installation, and environment variable handling within the CI/CD pipeline. The user also made changes to support VFIO testing and Docker configurations within the CI.
containerskata-containersdockerkubernetesmetrics
kata-containers/kata-containers
May 2021 - Oct 2021
Kata Containers is an open source project and community working to build a standard implementation of lightweight Virtual Machines (VMs) that feel and perform like containers, but provide the workload isolation and security advantages of VMs. https://katacontainers.io/
Role in this project:Backend & DevOps Engineer
Backend & DevOps EngineerContributions:21 reviews, 8 commits, 2 pushes in 4 months
Contributions summary:Marcel Apfelbaum primarily contributed to the Kata Containers project by working on QEMU integration, specifically addressing memory hotplugging and machine type configurations. He removed the `pc` machine type and optimized build processes, enabling the tool to run repeatedly. Additionally, he addressed issues related to build timeouts by implementing a fix to limit file descriptors in the rootfs-builder script. His work demonstrates a focus on improving QEMU integration and build processes.
firecrackervirtualizationociworkloadvdi
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