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Sean Marroquin
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I’m Sean. I build software people can rely on.

I’m a full-stack developer. I work across the whole product: the interface, the API, the database, and the server it runs on. That means one person is accountable for all of it.

How I work

Show the work

You should never have to ask where things stand. Status, quotes, and invoices are in your portal the moment they change.

Quote before building

Every piece of work has a price you approved first. If the scope changes, the conversation happens before the invoice does.

Plain where it counts

Proven tools for the parts that must not break: sign-in, payments, backups. The craft goes into what your customers see and touch.

What I build with

  • TypeScript
  • React
  • Next.js
  • React Native
  • Node.js
  • PostgreSQL

The tools matter less than the result, but if you are curious, this site is a working example. See how it is built.

About PWNTT

PWNTT has been my gamer tag for as long as I have had one. It lives on in the arcade, where it holds the top score.

Try to beat it.

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