Chikashi Kato is a seasoned full-stack engineer and technical leader with 11+ years of experience building and migrating large-scale systems, currently a Member of Technical Staff at Samaya AI in Cupertino. He has led complex modernizations—upgrading a 1.5M‑line Symfony PHP monolith to Symfony 5 and PHP 8.3, extracting key services into Go microservices, and architecting Kafka-based event pipelines—while mentoring teams and improving developer workflows. Comfortable across backend, DevOps and platform work, he has run large migrations, designed high-throughput services, and owned on-call reliability and observability. An active open-source contributor, he created slacktee (800+ stars) and contributed meaningful DevOps/UX improvements like file uploads and conditional coloring to simplify Slack integrations. Colleagues know him for rigorous code reviews, pragmatic automation (codemods, Terraform docs), and turning thorny legacy debt into stable, modern platforms.
11 years of coding experience
21 years of employment as a software developer
Master of Engineering (M.Eng.) Computer Engineering, Master of Engineering (M.Eng.) Computer Engineering at Tokyo Denki University
slacktee is a bash script that works like tee command. Instead of writing the standard input to files, slacktee posts it to Slack.
Role in this project:
Back-end & DevOps Engineer
Contributions:30 releases, 1 review, 115 commits in 6 years 7 months
Contributions summary:Chikashi primarily contributed to the bash script, `slacktee.sh`, which posts input to Slack. Their work involved adding features such as file upload capability and conditional coloring, improving the functionality of the core script. The user also addressed bugs and improved documentation and help messages to enhance usability and user experience. Furthermore, they made several improvements to handle configurations and command-line options, enhancing the usability of the script.
Contributions:1 release, 8 PRs, 8 pushes in 5 months
golangavroschema-registrygo-clientdataops
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Chikashi Kato - Member Of Technical Staff at Samaya AI