iOS & Android · freelance
Freelance mobile and full-stack. Native iOS and Android, Kotlin Multiplatform, and the AWS side that keeps them running. Companies bring me in to ship.
Selected clients
Work
Selected work. What I owned, what we shipped, and the stack — no padded metrics.
August 2023 – present
Case studyLead Mobile Developer
Shipping the Forbes Android app on Kotlin Multiplatform, sharing business logic with iOS, and the Forbes Vetted API behind it.
January 2021 – present
Case studyCTO / co-founder and sole developer
Co-founder and sole developer of a restaurant reservation product: guest apps on KMP, a Ktor/AWS backend, and a second app for restaurant staff.
February 2019 – February 2023
Case studyFreelance iOS developer
One of two iOS developers on a from-scratch rewrite with KMP and Swift. New app launched eight months in and reached hundreds of thousands of users.
August 2014 – August 2016; March 2018 – January 2019
Case studyiOS and full-stack developer
Travel Planner iOS (one of the most-used apps in the Netherlands; best Dutch transportation app award), later lead iOS on NS International, plus Kotlin APIs on AWS.
2023
Case studyiOS and Android developer
Encryption SDKs for iOS and Android, including a secure inputs library for card data and a Rust library wired into both platforms.
April 2021 – May 2023
Case studyLead mobile developer
Lead mobile developer for Kotlin Multiplatform healthcare apps: Bluetooth patient monitoring and surgical planning with DICOM review, plus a shared KMM networking and view-model framework.
January – July 2014; September 2016 – January 2017
Case studyMobile developer
ING Beleggen, the official ING investing app for iOS and Android, on React Native — plus parts of a Java server and major screens in the app.
February 2017 – February 2018
Senior developer
Nyon OrderWriter iPad app migrated from Objective-C to Swift, plus a server-side ordering pipeline for fashion retailers.
October 2013 – January 2017
Consultant
Consultancy across large clients, plus internal community work: NG-NL (an AngularJS conference) and a Certified Scrum Master.
November 2012 – October 2013
Co-founder and CTO
Co-founded Stylbar and shipped the iPhone app and backend: a small fashion social network where people share outfit photos for advice from friends and stylists.
March 2009 – November 2012
Senior software engineer / mobile team lead
Tech lead and scrum master on Infor’s first mobile team, shipping iOS and Android apps to customers and training other Infor employees worldwide.
November 2006 – February 2009
Software engineer
Java engineer on financial data loaders — including Bloomberg — and on the platform that ingested vendor instruments into Asset Control. Helped introduce Scrum.
Paoapps
Under Paoapps I design, build, and ship indie apps end to end — stores, privacy pages, the lot. Proof that the architecture talk still turns into something people can download.
Notes
VitalMint generates weekly meal plans with Apple Intelligence running on-device. The rest of the app works without it.
Read the postAt Forbes the Android app is Kotlin Multiplatform, iOS uses that shared layer for everything except UI, and a Kotlin API ships as the Forbes Vetted API.
Read the postKombuTime exists because calendar reminders drifted. It is free, has no ads, stores data on the device, and the Kotlin Multiplatform code is on GitHub.
Read the postFull-stack with a mobile center of gravity: native iOS and Android, Kotlin Multiplatform, and AWS. Background as team lead and Certified Scrum Master, plus an entrepreneurial streak — Stylbar, Fifty Fifty Card, and now Paoapps.
Available
Open for freelance and contract work: native iOS and Android, Kotlin Multiplatform, and the AWS side that keeps them running. Email is the fastest path.
