Available for freelanceBased in Hawaii

David Do

Building forWeb

Software engineer crafting products across web, mobile, and the edges between. Currently shipping Pacific Watch, Spin Spin Revolution, and Summon3D.

View Projects About Me david@daviddo.dev

Experience

10+ yrs

Projects shipped

Platforms

Web · iOS · Android · PWA

Focus

SaaS · Tools

About

The short version.

A decade of shipping software across web, mobile, and government-scale systems — now focused on SaaS products with opinionated design.

EVA-01

TYPE—01 · TEST

N.E.R.V

エヴァンゲリオン

Pilot nameDO, DAVID

Caffeine sync lvl94.2%

Flow stateLOCKED IN

I'm a software engineer building for the web, iOS, and Android. For nearly a decade I've shipped production systems for the State of Hawaii — Java, Spring Boot, and Oracle under the hood — while moonlighting on SaaS products I actually want to use.

These days I'm building Pacific Watch, a real-time emergency preparedness dashboard for Hawaii; Spin Spin Revolution, a rhythm game that turns your spin bike into a beat-matching experience; and Summon3D, a SaaS platform that streamlines the entire 3D-printing workflow from upload to delivery.

See what I've built Read resume →

Located

Honolulu, HI

UTC−10 · 🌺

Currently building

Pacific Watch

iOS · Android · PWA · Next.js

Say hi

Email↗GitHub↗

Tech stack

Daily drivers

Backend

JavaSpring BootSpring SecurityNode.js

Frontend

ReactNext.jsVueTypeScriptTailwind

Mobile

Capacitor

Data

PostgreSQLMySQLSupabaseOracle

Tools

GitDockerGitHub Actions

Stack · daily drivers

Next.js✦React✦TypeScript✦Capacitor✦Java✦Spring Boot✦PostgreSQL✦Supabase✦Stripe✦Tailwind✦Framer Motion✦Docker✦

Selected work

Recent projects.

A handful of products I've designed, built, and shipped lately.

View all

2025-Present

Pacific Watch

Full Stack Developer

A real-time Hawaii emergency preparedness dashboard. Monitors weather, earthquakes, volcanoes, surf, air quality, power outages, and more.

Next.jsTypeScriptSupabaseTailwind CSSLeaflet+2

2026

Spin Spin Revolution

Full Stack Developer

A rhythm game for your spin bike. Hit RPM zones synced to the beat, score points, and compete with friends in real-time.

Next.jsTypeScriptSupabaseStripeBluetooth Web API+1

2023-Present

Summon3D

Lead Developer

A 3D printing as a Service SaaS application

Next.jsReactTypeScriptPostgreSQLStripe API

Live