Simon Dziak — custom apps, AI, and growing companies

Custom mobile, web, and AI apps. Founder of growing companies. 150+ shipped from Miami since 2018.

now —Shipping with App369 + writing about AI-assisted Flutter

Who: Simon (Szymon) Dziak — Flutter & full-stack developer, founder of App369.
What: Custom mobile, web, and AI apps. Also shipping my own products across growing companies — 150+ delivered since 2018.
Where: Miami, Florida. Remote-first. Polish + English, both native.

Projects

App369

2018

Custom mobile, web, and AI app development — 150+ apps shipped since 2018.

Founder & Lead Developer live ↗

Workspace369

2024

All-in-one operations SaaS for service-based businesses — quoting, invoicing, payments, scheduling.

Founder live ↗

Template369

2024

Launch your next Flutter startup in 6 weeks — auth, payments, subscriptions, the boring parts done.

Founder live ↗

Latest writing

2026-04-22 · 4 min read

Colophon — notes on this site

This site has two addresses and one soul.

GitHub activity 4,451 contributions

@SzymonDziak ↗

YouTube 2.9K subscribers

@SzymonDziak ↗

YouTube thumbnail — Is App Development For You?

Is App Development For You?

YouTube thumbnail — Why I started app development? #app #development #business #work #softwareengineer

Why I started app development? #app #development #business #work #softwareengineer

YouTube thumbnail — Inception in Minecraft

Inception in Minecraft

Résumé

Work history, selected projects, skills, education.

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View résumé →