Daiki Hayakawa
Software Engineer at 3-shake
Tokyo, Japan
Summary
🤩
Rockstar🎓
Top SchoolDaiki Hayakawa is a Software Engineer based in Tokyo with 11 years of experience building cloud-native and storage-focused systems. He works at 3shake Inc. and is an active open-source contributor—his improvements to kubernetes-csi/external-snapshotter and TopoLVM show practical expertise in CSI storage plugins, robust error handling, and handling OS signals in Go for production resilience. Comfortable across Kubernetes, Golang, Rancher and storage internals, he focuses on backend reliability, logging consistency, and secret handling in distributed environments. With a humanities background in Chinese philosophy from Toyo University, he brings a disciplined, thoughtful approach to problem solving and code clarity that surfaces in his well-documented, test-backed contributions.
11 years of coding experience
Bachelor of Literature, Chinese Philosophy and Literature, Bachelor of Literature, Chinese Philosophy and Literature at Toyo University
Stackoverflow
380reputation
33kreached
13answers
2questions
Github Skills (21)
kubernetes10
lvm10
storage10
go10
kubernetes-pods10
error-handling10
container-storage-interface10
csi10
system-programming9
testing8
protobuf7
protobuffer7
grpc6
containerd6
kubernetes-secrets6
Programming languages (19)
Github contributions (5)
topolvm/topolvm
Dec 2020 - Jan 2023
Capacity-aware CSI plugin for Kubernetes
Role in this project:
Backend Developer
Backend DeveloperContributions:120 reviews, 162 commits, 54 PRs in 2 years 2 months
Contributions summary:Daiki primarily contributed to the `topolvm/topolvm` repository by modifying the filesystem and node driver components. Their work involved enhancing the codebase to handle the `EINTR` signal in system calls for Go versions 1.14+, indicating a focus on improving the system's robustness. Further contributions include the addition of comments for code readability, error handling fixes, and support for striped logical volumes, alongside related test cases, which suggest they worked on core storage functionality.
kubernetescsilvm2
kubernetes-csi/external-snapshotter
Feb 2020 - Feb 2020
Sidecar container that watches Kubernetes Snapshot CRD objects and triggers CreateSnapshot/DeleteSnapshot against a CSI endpoint.
Role in this project:Back-end Developer
Back-end DeveloperContributions:8 commits, 5 PRs, 17 comments in 12 days
Contributions summary:Daiki primarily focused on improving the functionality and robustness of the `external-snapshotter` project. They implemented features that utilized secrets within the ListSnapshots operation. A significant portion of their work involved refining error messages and addressing inconsistencies in logging. They also added support for handling secret parameters within the RemovePrefixedParameters function and improved error handling throughout the codebase.
kubernetessidecark8s-sig-storage
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