Shunsuke Tokunaga
Senior Software Engineer II at Akamai Technologies
Stony Stratford, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolShunsuke Tokunaga is a Senior Software Engineer with nine years of experience designing and operating cloud-native data and object storage services, currently at Akamai. He blends a networking-focused academic background (Master’s in Interdisciplinary Information Studies) with hands-on expertise in Kubernetes, AWS, Terraform, Go, and Python, having led data platform and ML platform efforts across Woven Planet, Cookpad, and Recruit. Shunsuke contributes to high-profile open source projects—helping improve Cilium’s documentation and Kubernetes compatibility and fixing compiler bugs in rust-lang/rust—demonstrating attention to system correctness and developer experience. He moves comfortably between low-level systems work and platform automation, with a track record of shipping reliable infrastructure for ML and data teams. Based in the UK, he pairs pragmatic engineering with clear technical writing, often surfacing non-obvious compatibility and upgrade risks before they reach production.
9 years of coding experience
11 years of employment as a software developer
University of TokyoBachelor's degree, Information Technology, Bachelor's degree, Information Technology at Tokyo Institute of Technology
Japanese, English
Github Skills (18)
kubernetes10
icmp10
cni10
mir10
intermediate10
networking10
lang10
compiler-compiler10
go10
kubernetes-pods10
compiler10
rust10
mi10
documentation10
ebpf9
Programming languages (11)
Github contributions (5)
cilium/cilium
Oct 2022 - Jul 2024
eBPF-based Networking, Security, and Observability
Role in this project:
Back-end & Documentation Engineer
Back-end & Documentation EngineerContributions:4 reviews, 9 PRs, 31 comments in 1 year 8 months
Contributions summary:Shunsuke primarily contributed to documentation updates and bug fixes within the Cilium repository. They addressed issues related to Kubernetes compatibility, specifically with container runtimes and the kube-proxy replacement. The user also made significant documentation improvements, clarifying environment variables, upgrade notes, and ICMP configurations. Their work demonstrates a focus on system correctness, maintainability, and user experience through improved documentation.
bpfcontainerskerneltroubleshootingkubernetes-networking
rust-lang/rust
Nov 2024 - Mar 2025
Empowering everyone to build reliable and efficient software.
Role in this project:Back-end Developer
Back-end DeveloperContributions:14 reviews, 7 PRs, 45 comments in 4 months
Contributions summary:Shunsuke contributed to the `rust-lang/rust` repository by fixing compiler-related issues, primarily related to the never patterns and match statements. Their work involved modifying the compiler's intermediate representation (MIR) builder code, and updating test cases to reflect the bug fixes. They addressed multiple ICE (Internal Compiler Error) reports and refined the code to address review comments.
crategarbage-collectionrustreliablecompiler
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.