John Doe · Full-Stack Developer
Scheduling bot for a neighbourhood football group — polls availability, picks the pitch time with the most confirmations, and stops asking once eleven people say yes.
Updated February 2026
The ones sharing the most skills with this one come first.
REST API mapping street-market stalls, opening hours and produce by neighbourhood in São Paulo. Written to learn query planning: the stall search went from 900ms to 40ms after the right composite index.
The portfolio platform this page is running on. Skills stay attached to the projects that use them, so the page shows evidence instead of a self-assessment. Ships a public portfolio, an application tracker and a résumé export typeset from the data rather than captured from the screen.
Inventory and storefront for a second-hand bookshop that was tracking stock on paper. Full-text search over titles and authors, and a barcode flow the owner uses from a phone at the counter.
John Doe is open to new opportunities.
johndoe
GitHub
johndoe
johndoe
john.doe@example.com
Location
São Paulo, Brasil