Tatsuya Kitagawa
Senior Software Engineer
Tokyo, Japan · 18 years in Dev and Ops
Application development
Beyond the happy path
Performance, reliability, the bug that won't reproduce. I take them on from requirements to operations, and build frameworks that speed the whole team up.
TypeScriptPythonJavaDDD
Infrastructure
Ground to build on
Networks, servers and Linux, up through containers, Kubernetes and infrastructure as code. I lead the build and leave nothing in the team's way.
Driving projects
Seeing around corners
Risk or opportunity, I spot it early, propose the way forward and see it through. Beside the decision-makers, I plan, lead and report, and grow the people around me.
Technical researchPoCPostmortemsStudy sessions
Track record
“Stay home” in two weeks
When COVID-19 hit, a PoC on a closed network kept us on site. I proposed a secure tunnel spanning the existing networks and got everyone working from home.
Apache GuacamoleSSH reverse port forwardingAWS Session Manager
Open source contribution
awslabs/git-secrets
A serious bug let credentials slip past AWS Labs' secret scanner: it checked only the first of several files. Found in my homelab, fixed upstream.
Merged Aug 10, 2018
Most starred repository
dm-integrity-benchmarks
Measure dm-integrity IO performance using Fio.
Last commit Aug 29, 2023
Latest push
rehearse
A harness for letting an AI agent organize large files without risking them.
Last commit Nov 1, 2026
Homelab and open source
Off the clock, still building.
Most of it lives in my homelab. The tip surfaces on GitHub as open source.