Yuya Kusakabe
CTO at BBSakura Networks, Inc.
Hokkaido Prefecture, Japan
Summary
🤩
Rockstar🎓
Top SchoolYuya Kusakabe is a seasoned technology leader and CTO based in Hokkaido with 13 years of hands-on experience building and operating cloud and telecom backend systems. He progressed from engineering roles at NIFTY and Sakura Internet to leading BBSakura Networks’ engineering organization and now steering its technical strategy. His open-source contributions show deep systems and networking expertise—improving HashiCorp Packer’s ESXi builder and helping implement BGP-MUP features in GoBGP—highlighting a strong bias for infrastructure reliability and protocol-level work. Comfortable in DevOps, QA automation, and core network development (HSS/PGW), he blends low-level networking knowledge with pragmatic leadership to deliver stable, production-grade services. An atypical detail: his academic background in mechanical systems engineering informs a methodical, systems-oriented approach to software architecture and operations.
13 years of coding experience
13 years of employment as a software developer
Bachelor of Technology - BTech, Mechanical Systems Engineering, Bachelor of Technology - BTech, Mechanical Systems Engineering at Tokyo University of Agriculture and Technology
Stackoverflow
11reputation
419reached
1answer
0questions
Github Skills (25)
esxi10
python10
testing10
vmware10
packer10
go10
network-protocol10
bgp10
protocols10
devops10
test-automation10
unit-testing9
r69
srs9
cloud-infrastructure9
Programming languages (17)
Github contributions (5)
osrg/gobgp
Jul 2022 - Nov 2022
BGP implemented in the Go Programming Language
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 reviews, 22 commits, 18 PRs in 4 months
Contributions summary:Yuya contributed to the implementation of BGP-MUP (BGP Multi-protocol extensions) features within the GoBGP project. They updated the Go version and modules used by the project. The contributions include initial support for BGP-MUP SAFI and Extended Community, integration of SRv6 behavior for MUP, and providing support for filtering MUP routes. The user also made several fixes, including prefix handling and route key processing, to refine the BGP-MUP implementation.
bgpgoprogramming-language
hashicorp/packer
Apr 2014 - Oct 2015
Packer is a tool for creating identical machine images for multiple platforms from a single source configuration.
Role in this project:DevOps Engineer & Cloud Engineer
DevOps Engineer & Cloud EngineerContributions:11 commits, 4 PRs, 16 comments in 1 year 6 months
Contributions summary:Yuya's contributions primarily focus on improving the VMware ESXi builder within the Packer project. They addressed issues related to file uploads, checksum verification, and remote machine interactions. The commits also include updates related to handling output directories and configuring the export functionality using the OVF tool. Furthermore, the user contributed to the overall stability and functionality of the ESXi driver by addressing several bugs.
packer
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