Krzysztof CyrulFlutter developer in Rzeszów, Poland

I build mobile apps and websites for businesses.

Mostly Flutter, from the first screen to the store release and the updates after it. Two of my apps are live on the App Store and Google Play. The websites below are ones I built and still look after.

Taking on new projects [email protected] LinkedIn GitHub

Building now

What I am working on at the moment.

Workszop home page with the app on a phone

Workszop

Workshop software and a car passport for its customers

The mechanic gets the whole day on one screen: appointments, jobs, quotes, customers and vehicles, on a phone and on a tablet. A car is checked in with a QR code or by scanning its registration document, and the owner carries the repair history and the dates of the next insurance and inspection in their pocket.

This grew out of the in-house app I built for the Serwis In Cars workshop, now under its own name and brand. The site is live; the mobile apps are still being built and are not in the stores yet. Flutter for phone and tablet, with a Python backend.

workszop.com

Mobile apps

Built in Flutter, one codebase for iPhone and Android.

Centrum Kolorado app icon

Centrum Kolorado

Restaurant ordering app for Centrum Kolorado

Customers browse the full menu, build a half-and-half pizza, and order for delivery or pickup. Loyalty points, discount codes and push notifications are built in, and the order status updates live while the kitchen works on it. Staff and admin versions of the same app run the restaurant side.

I built the whole app: architecture, UI, API integration and store releases. Flutter, Bloc, WebSockets, Firebase.

Download on theApp Store Get it onGoogle Play
Centrum Kolorado app: menu with burgers and daily deals Centrum Kolorado app: shopping cart Centrum Kolorado app: choosing the restaurant or the bowling alley Centrum Kolorado app: sign in screen
on ID app icon

on ID

Work passport app for the mycelon hiring platform

Instead of a CV, each worker carries a profile built from real work: punctuality, manager ratings and a BlueScore that follows them to the next job. Employers in hospitality, retail and logistics post jobs, invite candidates by link or one-time code, book interviews and sign documents in the app.

I built the mobile app and its UI. Flutter, Bloc, GoRouter, clean architecture, Polish and English versions.

Download on theApp Store Get it onGoogle Play
on ID app: worker profile with score and ratings on ID app: job offers list on ID app: history of manager ratings on ID app: messages with employers

Web apps

Systems that a company runs its daily work on.

AUDT

Client portal for K&K Serwis Krystian Kaczorowski, a forklift service company

Customers see their machines, the dates of the next mandatory UDT inspection, service history and invoices, and report breakdowns. The office runs all of it from the admin side, and the app sends inspection reminders by e-mail on its own, without anyone watching the calendar.

I took the app over with no source code left: the old ASP.NET and Vue version was decompiled, then rebuilt as FastAPI, Next.js 15 and PostgreSQL. Every row and every file was migrated and checked against the old database. FastAPI, Next.js, PostgreSQL, Docker, Caddy.

AUDT admin dashboard with demo data
Admin dashboard: upcoming inspections, overdue invoices, open service jobs
AUDT customer dashboard with demo data
Customer view: their machines, service history and invoices to pay

Screens shown with demo data, not customer records.

audt.pl

Websites

Sites for local businesses in and around Rzeszów, most of them on WordPress so the owners can edit content themselves.

Centrum Kolorado website home page

Centrum Kolorado

Pizzeria, indoor playground and bowling alley near Rzeszów, and the largest site I have built: around fifteen pages with menus, price lists, birthday and school group offers, news, gallery, opening hours and the ordering app. Hand-written, no CMS.

centrumkolorado.pl
Rajcówka website home page

Rajcówka

A private holiday house in Hadle Kańczuckie, 30 minutes from Rzeszów: sauna, jacuzzi, fireplace. The site shows the house, the area and free dates, and takes booking requests. WordPress.

rajcowka.pl
Heli Forklift website home page

Heli Forklift

Sales, rental and servicing of Heli forklifts. Product catalogue with a forklift picker. WordPress and WooCommerce.

heliforklift.pl
PicTales website home page

PicTales

Online photo galleries for weddings, proms and birthdays. Guests scan a QR code and add their photos without installing anything. My own product: React front end and backend.

pictales.pl
Projekt Marzeń website home page

Projekt Marzeń

Wedding and event decoration studio in Rzeszów. Offer, gallery and client recommendations. WordPress.

projektmarzen.rzeszow.pl
Pro-Mateo website home page

Pro-Mateo

Online shop for handmade wooden furniture and décor. WordPress and WooCommerce.

pro-mateo.pl

Work and study

2023 – now
Flutter developer, freelance and contract. Mobile apps for small and mid-sized companies.
2022 – 2024
Web developer, independent. Company websites and online shops for Polish clients.
2020 – 2024
Computer science, engineering degree.

What I work with

Mobile: Flutter, Dart, Bloc, Riverpod, Firebase, REST and GraphQL APIs.

Web: React, TypeScript, WordPress, WooCommerce.

Backend: Python, Node.js, PostgreSQL, Supabase, Docker.