A stream of bits and pieces on building software.
Building in fast feedback loops
talkViteConf 2025Give people great tools — an issue tracker that feels effortless, a developer setup that brings an immediate connection to what they’re creating — and they’ll do their best work.
Addressing Client/Server Compatibility in tRPC
blogJuly 12, 2023 • 5 minute readOne of the main selling points of tRPC is "End-to-end typesafe APIs made easy", but this doesn't hold if you are not mindful about keeping your client/server versions in sync.
Moving Pleo’s frontend into the Third Age of JavaScript
slidesCopenhagen React Meetup (June 2022)Learnings from migrating Pleo’s frontend from Webpack to Vite.
Beyond Bug-Squashing
blogApril 30, 2021 • 4 minute readMy mental model for fixing bugs boils down to a 4 step process with a strong focus on improving safety nets.
Guidelines for Better Pull Requests
blogAugust 12, 2020 • 4 minute read7 tips and tricks for better pull requests to improve the feedback you get on your work and elevate the overall quality of the code and product.
Migrating from Flow to TypeScript using flow-to-ts
blogFebruary 09, 2020 • 5 minute readOver the last couple of years, I have been migrating several codebases from Flow to TypeScript with minimal effort. In this post, I will describe my motivation and the approach I would recommend.
Software Engineering Principles
blogJanuary 13, 2020 • 5 minute readA list of the high-level principles and beliefs that I operate by when building software. Lots of links and references.
A journey into React Native development 🌴
talkCopenhagen React Meetup at Leo Innovation Lab (May 2019)Summing up 2+ years of learnings from my journey into the React Native jungle. How to get started? What to be aware of? Lessons learned and battles fought.
Converting an app to React Native — How to get started
blogApril 13, 2018 • 9 minute readTips and tricks on tooling, navigation, and libraries when getting into React Native development. Especially relevant for native mobile developers approaching React Native.
Making open source my new year’s resolution
slidesTech festival (September 2017)My motivation for making contributing to open source software my new year’s resolution in 2017. Hopefully, this will motivate people to do the same thing.
Type safe CSS Modules with Flow
blogJune 21, 2017 • 3 minute readCSS Modules + Flow = type safety and editor autocompletion. Introducing a few open source projects to help you with type safety and editor autocompletion.
type safety + front-end code =
slidesCopenhagen.js Meetup at issuu.com (June 2017)A brief motivation for the importance of static type safety in larger codebases. Comparison of different static type-checkers options for front-end code: TypeScript, Flow, Reason, Elm. Trade-offs and recommendations.
React PropTypes to Flow codemod
blogApril 11, 2017 • 3 minute readI’m presenting how to automatically convert your existing codebase using React PropTypes to use more powerful Flow annotations.
An introduction to automated refactoring with JavaScript codemods 👾
talkCopenhagen.js Meetup (December 2016)Short and practical introduction to codemods. They are "scripted search and replace" and super useful for automation and refactoring.
Rethinking front-end development at issuu.com
talkAt the Frontend Conference (May 2016)As frameworks come and go and best practices see constant change, it is increasingly challenging to make confident decisions about client-side code. We present our experiences in search for the right abstractions and architecture optimized for change. We also elaborate on how selecting the React ecosystem for our stack improved our workflow and product quality, as well as examine problems we faced.
Evaluating a year working with React & Redux
slidesReact and Redux Copenhagen Meetup (April 2016)After using React since early 2015 it was time to evaluate the first year. Where did we come from? What improvements to our codebase did React introduce? Based on learnings from issuu.com.
Abandoning the mothership
blogDecember 16, 2015 • 7 minute readIt was time to pour into our front-end code the same poison we gave our back-end systems, splitting it all apart into maintainable chunks. Our vision was to make each feature team at issuu.com own, build and deploy its front-end code autonomously—and to make things that ought to be trivial actually trivial!