Mara Costa
Fullstack developer · Porto
● Open to freelance, July onwardsI take products from "what if" to "it's live" — schema to stylesheet, with a soft spot for the boring middle layers everyone else skips. Six years, three startups, one acquisition, zero lost databases.
These days I'm independent — helping small teams ship their first real version at mara.studio.
Selected work
cartlane2026
Marketplace infra for indie sellers — checkout in 14 currencies.
maretide2025
Tide & surf forecast API used by 200+ apps. Boring, fast, correct.
draft.day2024
Writing tool that publishes to anywhere with one keystroke.
tinyinvoice2023
Invoicing for freelancers who hate invoicing. Acquired 2024.
Experience
2024 —
Independent · mara.studio
2021 — 24
Otterworks · founding engineer → acquired
2019 — 21
Douro Digital · fullstack developer