Mobile
Native iOS and iPadOS in Swift and SwiftUI, native Android in Kotlin and Compose, and cross-platform in Flutter.
Swift · SwiftUI · UIKit · Kotlin · Compose · Flutter
Software, built properly.
Senior engineer with 15 years of shipping mobile, desktop and web applications, and the backends behind them. Six years on Ford's connected-vehicle apps. Founder of Invoice.app.
What I build
Desktop
macOS apps that share a codebase with iPhone and iPad without feeling like ports.
macOS · SwiftUI · AppKit
Web
Fast, static-first sites in Next.js and React, and web apps in Flutter, localised from day one.
Next.js · React · TypeScript · Tailwind · Flutter Web
Backend
Go services on Google Cloud, Firebase, payments, and regulatory integrations such as e-invoicing.
Go · Cloud Run · Firebase · REST
Selected work
In development
Public transport app
Public transport for Poland.
A public transport app for Poland, in development now. More here soon.
Coming soon
Coming soon
Coming soon
Coming soon
Metrochrome
Film, measured.
The successor to BLACK. A darkroom in your pocket: thirty-six colour and black-and-white film stocks, each built from the manufacturer's own published datasheet rather than a preset with a film's name on it. Load a roll, expose it, develop it and print it with real darkroom instruments: enlarger filtration, test strips, paper grades, dodge and burn. Native iOS and Android, sharing one measured dataset and a conformance suite so both phones print the same negative the same way.
metrochrome.app ↗
Invoice.app
Invoicing for freelancers and small businesses.
Create invoices, estimates, purchase orders and credit memos, track payments and expenses, and stay compliant with e-invoicing in Poland (KSeF) and Germany (ZUGFeRD, XRechnung). One product across iPhone, iPad, Mac, Android and the web, with offline support and sync. Designed, built and run end to end: Swift and SwiftUI, Flutter, a Go backend on Cloud Run, and a Next.js site in nine languages.
invoice.app ↗
BLACK
Black-and-white film emulator.
A black-and-white film emulator, made with Nuevo.Tokyo. Ten real films, from Ilford HP5 and Kodak Tri-X to expired stocks like Fuji FP-3000B, each an accurately generated curve rather than a grey filter, and five manual adjustments: curves, fade, vignette, shadows and highlights. Full-resolution saves and a collection of your prints. Featured by Apple multiple times and downloaded over a million times. Shipped on iOS and Windows Phone.
Brands I have built for
- Ford
- BBC
- ITV
- Burberry
- Olympic Channel
- Priority Pass
- VEON
Directly and through agencies, 2011 to 2025.
About
I have been shipping iOS apps since 2011, for broadcasters, retailers and hardware startups in London and Poland, and for six years as a senior engineer on Ford's connected-vehicle apps for fleet customers across the UK, EU and US. Along the way I added Flutter, Go and the web, mostly because my own product needed them.
Today I split my time between running Invoice.app and building software for clients. I work alone or embedded in a team, remotely, and I take ownership of the whole thing: architecture, code, tests, releases and the backend behind it.
Building something that has to work?
If you need high-quality software for mobile, desktop or web, and someone who will own it from the first commit to the App Store, get in touch.