Matt Hasson — Full-Stack Engineer & AI-Augmented Developer

// About

I build things that
people actually use.

I spent 4 years at Sonos building CI/CD infrastructure, then left to build my own things. Turns out I really like building my own things. I've shipped 8 production apps since — all solo, all live, most with paying users or real clients.

I'm not precious about the stack. If the project needs React Native, I'll write React Native. If it needs FastAPI and Postgres, done. Flutter? Sure. I've wired up Stripe, Square, Twilio, RevenueCat — whatever it takes to get something real out the door. I use AI heavily and I'm not shy about it. It's how I move at the speed I do.

Shipped Apps

Yes

For Hire

Technologies Used

Solo

Built & Deployed

// Projects

Shipped & deployed.

Production applications solving real problems — from financial analytics to mobile habit tracking to business operations.

InsightTrader

Trading Journal & Analytics Platform

Full-stack trading journal with CSV import supporting 12+ brokers, trade reconstruction engine, equity curve visualization, calendar heatmaps, and AI-powered analysis tools. Monorepo architecture with separate web and API services.

12+ broker integrations · Monte Carlo analysis · AI trade coaching

Next.js 15 React 19 FastAPI Supabase Fly.io Stripe OpenAI Anthropic TypeScript

Visit Live Site

Habify

AI-Powered Habit Tracker · Mobile App

Mobile habit tracking app replacing streak-based systems with a physics-inspired momentum engine. Features AI coaching, gamification with XP/levels/badges, behavioral insights, and push notifications. Live on the Google Play Store.

Momentum engine · AI coach · Live on Google Play

React Native Expo FastAPI Supabase OpenAI RevenueCat Redis Docker

Visit Live Site

West Roxbury Framing

Business Management System

Production business management platform for a custom framing shop. Full order lifecycle with Kanban workflow, Square payment processing, Twilio SMS notifications, inventory tracking, customer CRM, and public marketing site.

Square payments · Kanban workflow · SMS notifications · CRM

Next.js 16 React 19 Prisma PostgreSQL Square API Twilio Postmark TypeScript

Visit Live Site

SecureChat

End-to-End Encrypted Messaging

Cross-platform encrypted messaging app with NaCl Box cryptography (X25519 + XSalsa20-Poly1305). Real-time WebSocket messaging with per-message ephemeral keys for forward secrecy. Zero-knowledge server — the backend never sees plaintext.

E2E encryption · Forward secrecy · Zero-knowledge server

Flutter FastAPI PostgreSQL NaCl/libsodium WebSockets JWT Railway

View on GitHub

Strategy Reality Check

Trading Strategy Validator

Statistical analysis tool for traders. Upload trade history, define strategy rules, and get a verdict on whether your edge is real or just luck — powered by Monte Carlo simulation with 10,000 iterations.

Monte Carlo simulation · 10K iterations · Statistical verdict

Next.js 14 React Neon Postgres NextAuth.js TypeScript Tailwind CSS

CarCompare

Vehicle Comparison Tool

Compare up to 4 vehicles side-by-side across 10 specification categories. Database of 600+ vehicles from 47 brands with cascading dropdowns and responsive design. Single-file deployment — zero dependencies.

600+ vehicles · 47 brands · Zero dependencies

JavaScript HTML5 CSS3 Zero Deps

Hebrew Teacher

AI Language Tutor

Interactive desktop app for learning Hebrew with GPT-4 as a personal tutor. Structured lessons by proficiency level, vocabulary review with a spaced repetition algorithm, grammar correction, and conversational practice. Built it because I moved to Israel and needed to actually learn the language.

GPT-4 tutor · Spaced repetition · Grammar correction

Python OpenAI GPT-4 ttkbootstrap Spaced Repetition

// Tech Stack

Tools of the trade.

Technologies I use across the full stack — frontend to infrastructure, payments to AI.

⚡

Frontend

React / React Native

Next.js

Expo

TypeScript

Tailwind CSS

Framer Motion

Flutter

⚙️

Backend

FastAPI

Python

Node.js

Prisma

SQLAlchemy

WebSockets

🗃️

Data

PostgreSQL

Supabase

Neon

Redis

🤖

AI / ML

OpenAI / GPT-4

Anthropic Claude

AI Pair Programming

Monte Carlo Simulation

☁️

Infrastructure

Vercel

Fly.io

Railway

Docker

GitHub Actions

💳

Payments / APIs

Stripe

Square

Twilio

Postmark

RevenueCat

📱

Mobile

React Native

Expo

Flutter

Google Play Store

🧪

Testing

Playwright

Pytest

E2E Testing

Sentry

PostHog

// Methodology

AI-augmented engineering.

I don't just use AI — I operate with it as a multiplier across every phase of development, from architecture to production.

⚡

10× Velocity

I pair with Claude and GPT-4 the way most people pair with another engineer — except it doesn't need coffee breaks. Every project here was built this way. It's not a gimmick, it's just how I work now.

🎯

Not a Crutch

I decide what to build, how to structure it, and when to ship. The AI helps me get there faster — but it doesn't make the calls. If you've tried it, you know the difference between someone who prompts and someone who engineers.

🔁

Full Lifecycle

Database schema, API design, frontend, payments integration, deployment — I use AI across all of it. Not because I can't do it manually, but because I'd rather ship this week than next month.

Matthew Hasson

I build things that
people actually use.

Where I've built.

Sonos