Hi, I'm
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I started out writing embedded and manufacturing software at Tibit Communications, where code ran on real hardware and mistakes were expensive. I still build and test that way.
At EHMA.ai, I own wAve, an AI-powered solar sales platform, from front end to back end. In 11 weeks I set up CI/CD and monitoring, raised test coverage by 828%, cut API response times from 18 seconds to 316ms, migrated 556K records with no downtime, and overhauled how we handle personal data.
Outside work, I'm building Sprout AAC, a free, open-source app that gives kids who can't rely on speech a way to communicate. Commercial AAC apps cost $150–$250. Sprout is free.
Every number here is measured as the page loads.
Answered by
Round trip
Your browser → API → back
Database query
Live SQL on Cloudflare D1
API work
Hono on a Cloudflare Worker
CI / CD
React 19 + Vite, pre-rendered and served by Cloudflare Pages · API: Hono on Cloudflare Workers with D1 and R2 · deployed by GitHub Actions on every push. Source on GitHub
C and C++ from embedded work, Python and TypeScript for most of what I've built since, Swift for iOS, and APEX and SOQL for Salesforce.
React on the front end, plus Angular from the Tibit network statistics tool. Hono, Django and ASP.NET on the back end. I use TypeScript wherever it fits.
SQL and document databases alike: MongoDB and Azure Cosmos DB at EHMA.ai, Cloudflare D1 for my own projects, SOQL for Salesforce, and Pandas and NumPy for working with data in Python.
My production work at EHMA.ai runs on Azure: Functions, Cosmos DB, Key Vault and API Management. My own projects run on Cloudflare Workers and Pages. I've set up CI/CD in GitHub Actions and Bitbucket Pipelines, including an automated TestFlight release.
At Tibit I wrote embedded software on Linux, programmed FPGAs, and talked to hardware over UART and I2C, including a 16-port board used in production manufacturing. I've also worked with real-time operating systems.
I worked as an SQA developer, writing test plans, leading their reviews, and running feature, integration, upgrade and regression testing. I also helped move the team from JIRA tracking to TestRail.
I use AI tools every day: GitHub Copilot for completions and refactors in the editor, and Claude for architecture decisions, debugging hard problems and building features faster.
I've worked at a startup and inside a larger company after an acquisition. I present technical work to mixed audiences, write documentation, and have run knowledge-transfer sessions for engineering and other teams.
January 2026 – Present
January 2023 – September 2025
October 2021 – January 2023
This site. A React and Vite front end on Cloudflare Pages, pre-rendered at build time so it arrives with content, plus a Hono API on Workers backed by D1 through Prisma. The admin panel manages projects, contact messages and the resume PDF. There are also a few Lord of the Rings easter eggs, if you go looking.
A free, open-source AAC app for kids who can't rely on speech. They tap symbols on color-coded Fitzgerald Key boards (3×3 up to 5×5) and the app speaks the words with on-device text-to-speech, so it works offline with no account or subscription. A guided setup wizard walks a family through their first board. Built in Flutter. v0.1.0 is out for macOS. iOS and Android builds aren't published yet, and Open Board Format import/export is in progress for v0.2.
Booking and portfolio site I designed and built for Kyle Kupczyk, a mixing and mastering engineer in Phoenix. The audio player keeps playing as you move between pages, the visuals react to the music, and the accent colors come from each track's album art. Every track has its own shareable page and link preview, plus a public play count. Booking requests send branded emails and an auto-reply. Astro on Cloudflare Workers with D1 and Resend.
A browser extension that makes cluttered pages easier to read: read-aloud, a reading mode, symbol overlays for AAC users, and focus tools. Simplify rewrites dense text using your own OpenAI, Anthropic or Ollama key. The request goes straight from your browser to that provider; ClearPath has no server and collects nothing. Not in the Chrome or Firefox stores yet, so for now it installs from source.
An alien-themed Python quiz I built to help a friend study. 200 questions across 8 chapters, six ways to play (including timed, flashcards, exam simulation and survival), XP, levels and achievements, and a Python sandbox that runs in the browser through Pyodide and WebAssembly. No backend.
Small live demos, running on the same stack as this site.
Type something. A Cloudflare Worker lays it out with satori and draws it with resvg, both running as WebAssembly, the same way this site's own preview image is made.
Rendering…
A 32×8 LED matrix run by C written the way I'd write it for a microcontroller (no libc, no malloc, a fixed-timestep tick), compiled to WebAssembly with clang. Click the LEDs to draw Game of Life cells.
… · view the C
GitHub contributions in the last year
Bachelor of Science in Software Engineering
When I'm not shipping features, here's what keeps me going.
I've played games my whole life, from long story-driven RPGs to competitive multiplayer. It's how I switch off after a long sprint.
Hold to summon the Ring Runner…
Goose is my grey and white cat and the real boss of my home office. Walks across the keyboard, joins standups uninvited.
Hover or tap to meet Goose…
The first cup comes before any real code gets written. No exceptions.
Slow-burn psychological horror and classic slashers alike. I'll watch almost anything in the genre.
Each one marks something that mattered to me when I got it, and the collection keeps growing.
Questions about my work, a project, or a role? Send me a note.
Matthew Sullivan
Full-Stack Developer at EHMA.ai
Arizona
LinkedIn is the quickest way to reach me. The form works too, and it goes straight to my inbox.
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