Nachi Ueno
Architect at F5
Tokyo, Japan
Summary
👤
Senior🎓
Top SchoolNachi Ueno is a seasoned software architect based in Tokyo with 15+ years building distributed systems and cloud-native networking software for companies like F5, Google, Juniper, and NTT. He specializes in software-defined networking and has deep hands-on experience with OpenStack Neutron and Juniper’s Contrail controller, contributing backend RDBMS and schema improvements that boosted API server performance. Known for shepherding projects from design through implementation, he blends system-level architecture with pragmatic engineering—especially around databases and schema transformation in large distributed control planes. Nachi also mentors engineers to become independent contributors, favoring clear, testable designs and measurable performance gains. He holds a Master’s in Computer Science from Waseda University and brings a rare combination of carrier-grade networking insight and open-source impact to product-focused teams.
15 years of coding experience
19 years of employment as a software developer
Master, Computer Science, Master, Computer Science at Waseda University
English, Japanese
Stackoverflow
11reputation
66reached
0answers
1question
Github Skills (9)
sqlalchemy10
python10
rdbms10
apidoc9
database-design9
api9
configuration-management8
visual-studio-code6
go6
Programming languages (7)
Github contributions (5)
Juniper/contrail-controller
Apr 2016 - Nov 2016
Contrail Controller
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 commits in 6 months
Contributions summary:Nachi primarily contributed to the back-end infrastructure, particularly in the RDBMS backend support for the API server. Their work involved implementing object metadata, domain sharing, and schema transformer support, demonstrating a focus on improving performance and adding new database features. The commits included database schema changes, the introduction of new classes, and modifications to existing API server code. Additionally, the user worked on improving unit test performance for the RDBMS implementation.
controlleropencontrail-core-projectopencontrail
nati/fun
Oct 2014 - Jun 2018
Contributions:9 commits, 7 pushes, 2 comments in 3 years 8 months
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