Independent developer working under DevTestudinidae. I build web products and write about the engineering decisions, tests, and maintenance work behind them.
- Spoonie — a recipe discovery and sharing web product.
- KoreAves — an English–Korean atlas of birds recorded in South Korea, with source-linked information.
- Space Atlas — interactive space-science learning materials.
Each link leads to a first-party project case study. The portfolio brings the work together.
I document technical problems when I have reproducible examples. One recent case is the portfolio test that broke when its source ledger grew from six confirmed records to eight:
External publications and listings are documented with their original sources:
- 10,000 Birds guest article, credited to Jihun Oh.
- One Earth feature about KoreAves.
- Full source-linked publications and listings archive.
Publication or inclusion in a directory does not establish product adoption or audience growth.