Akihiro Sakai
Senior System Engineer at XING Inc.
Chiyoda, Japan
Summary
🤩
Rockstar🎓
Top SchoolAkihiro Sakai is a senior system engineer based in Chiyoda, Japan, with 11+ years of hands-on experience building and hardening container and cloud-native tooling. He is an active maintainer and contributor across top projects in the container ecosystem—containerd, runc, BuildKit, Moby/dockerd and Kubernetes-related tooling—specializing in rootless container support, cgroup v2, networking and CI/CD resilience. His work blends deep Go backend engineering with DevOps practice: shipping drivers, runtime integrations, and production-focused fixes (e.g., minikube, kind, podman) that improve real-world compatibility across distros and kernels. Akihiro’s contributions often tackle subtle system-level issues (race conditions, namespace isolation, event channels) and add pragmatic developer conveniences like improved CLI commands and functional tests. He brings a veteran operator’s mindset from long-tenured roles in networking and systems at XING and other companies, combined with a reputation for quietly improving the plumbing that large cloud-native projects rely on.
11 years of coding experience
12 years of employment as a software developer
NARA Institute of Science and Technology
Stackoverflow
66reputation
10kreached
4answers
1question
Github Skills (77)
json-schema10
testing10
command-line-interface10
bash10
runc10
automation10
build-automation10
dockerfile10
cri-o10
concurrency10
podman10
linux10
dockers10
containerd10
api10
Programming languages (26)
Github contributions (5)
rootless-containers/rootlesskit
May 2018 - Jan 2023
Linux-native "fake root" for implementing rootless containers
Role in this project:
Back-end Developer
Back-end DeveloperContributions:16 releases, 157 reviews, 523 commits in 4 years 8 months
Contributions summary:Akihiro primarily contributed to the `rootlesskit` project by implementing and refining the underlying mechanisms for containerization. Their work includes fixing argument handling in child processes, adding a pipe for synchronization, and splitting the code into packages for better organization. They also implemented network namespace isolation with the use of slirp for NAT, demonstrating expertise in container networking. Additionally, they worked on code refactoring, exit code propagation, and signal handling, enhancing the overall robustness and control within the container environment.
containersseccomprootless-containerslinuxdocker
aind-containers/aind
Apr 2020 - Jun 2021
AinD: Android in Docker. Ain't an emulator.
Role in this project:DevOps Engineer
DevOps EngineerContributions:5 releases, 25 reviews, 75 commits in 1 year 2 months
Contributions summary:Akihiro focused on automating the setup and management of an Android environment within a Docker container. They added initial setup for the container's window manager, and refactored and modified scripts to improve the container's functionality, and handle potential errors during startup. The user made changes to the container build process, and implemented enhancements such as VNC password generation and hiding sensitive information from logs. Furthermore, the user updated patches related to Anbox, and integrated squashfuse to resolve the device loop issues.
containersemulatorseccompdockerandroid
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