I build stuff.

Hi, I'm Perttu, a developer and a designer. I've spent the last decade or so designing and building digital products.

From the blog

I write a lot, take a look at some of the most recent articles.

Help test Netli.fyi, a Netlify client for iOS (and soon Android)

November 26, 2025

Netli.fyi is a native iOS client for Netlify that gives you quick access to your sites, build logs, domains, and account info. It's now in beta and needs real-world testing.

Best practices for React Query with FlatList

November 21, 2025

A look at how to combine React Query with FlatList, FlashList, and LegendList for smooth, stable list UIs. Best practices for handling loading states, skeletons, and safe areas.

How to run a holiday sale in Play Console for Android subscription apps

November 19, 2025•External

A practical guide to planning, configuring, and promoting seasonal subscription offers on Google Play.

Apple’s App Store Mini Apps Partner Program: what app teams need to know

November 17, 2025•External

Apple introduces a 15% IAP rate for apps that host third-party mini apps, with strict rules and new APIs attached.

Work

Company
RevenueCat
Role
Senior Developer Advocate
Date
2025 Present
Company
Fenrir Digital
Role
Founder
Date
2021 2025
Company
Noice
Role
Senior Mobile Developer
Date
2023 2024
Company
Veri
Role
Product Lead
Date
2022 2023
Company
Mavericks
Role
Senior Software Engineer
Date
2021 2022
Company
Qvik
Role
Senior Software Engineer
Date
2019 2021
Company
Nyxo
Role
Co-founder
Date
2019 2021
Company
University of Helsinki
Role
Product Lead
Date
2018 2019
Company
Perfektio
Role
Co-founder
Date
2016 2018
Company
Nordea
Role
Analyst
Date
2015 2018
Company
Aalto University
Role
Research Assistant
Date
2014 2016