Building large-scale data platforms
Designing incremental pipelines and data systems at logistics scale, including workloads of roughly 5 billion parcel records per year.
About / profile
Based in Japan
Backend by practice.
Security by curiosity.
Iām a backend engineer working on data platforms, APIs, and practical applications of data and AI. Iām broadly interested in security ā not limited to software.
01 / Focus
The questions I keep returning to.
How do we make systems more trustworthy, resilient, and secure?
02 / Experience
What I work on.
Designing backends and access control
Working across BFFs, APIs, authentication, authorization, and web applications with TypeScript, Hono, tRPC, OpenAPI, Go, and Python.
Evaluating data and AI use cases
Comparing practical approaches such as GraphRAG and RAG across answer quality, cost, and latency.
03 / Open source
A few public traces.
04 / Contact