Available for work

I'm John "Nirzhuk" Serrano

Fullstack engineer, mostly frontend. Seven years building web UIs, plus React Native and Expo apps like NetHaven. Nothing beats seeing someone use something I made.

now > Release NetHaven · timeline

React Native
Expo
TypeScript
Next.js
Node.js
PostgreSQL
tRPC
Tailwind

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NetHaven

nethaven.app

Mobile App · Web App

Personal finance dashboard that syncs banks, brokerages, and crypto into one live net worth view, with budgets, subscriptions, debt payoff, and savings goals updating as money moves. Available on iOS, Android, and the web.

React Native
PostgresQL
Hono
TRPC
Tanstack Start
React Native Reanimated
Expo
Tailwind/NativeWind
Expo Router

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NetHaven: run your financial life from one dashboard

August 12, 2026

NetHaven puts banks, brokerages and crypto in one live net worth view, on iOS, Android and web. Here is what it does, how I built it, and why Pro costs $6.67/month.