iZettle

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Check out our new home on the PayPal Technology Blog starting Nov 18.

Triggered: Incident #1234 (incident process needs fixing)

This is a story of a small group who, voluntarily, got together to improve the incident handling process within our company. It is not a “we did great, you should do the same” story, rather a “this…

Triggered: Incident #1234 (incident process needs fixing)

This is a story of a small group who, voluntarily, got together to improve the incident handling process within our company. It is not a “we did great, you should do the same” story, rather a “this…

A Journey from Software to Machine Learning Engineer at iZettle

I have been working at iZettle for about four years now. I did not start my journey at this company as a Machine Learning Engineer, but rather transitioned to it as I was growing within the company…

A Journey from Software to Machine Learning Engineer at iZettle

I have been working at iZettle for about four years now. I did not start my journey at this company as a Machine Learning Engineer, but rather transitioned to it as I was growing within the company…

Implementing Observability in a Service Mesh

This article focuses on improving Observability in Microservices using the Consul Service Mesh with Envoy as the data plane. I will cover Layer7 metrics, logs and request tracing.

Implementing Observability in a Service Mesh

This article focuses on improving Observability in Microservices using the Consul Service Mesh with Envoy as the data plane. I will cover Layer7 metrics, logs and request tracing.

Powering iOS, Android and web experiences with a backend-for-frontend

When building our new iZettle Food & Drink products, we encountered challenges in getting data to our clients in a fast and efficient way, and explored the backend-for-frontend pattern to help solve these issues…

Powering iOS, Android and web experiences with a backend-for-frontend

When building our new iZettle Food & Drink products, we encountered challenges in getting data to our clients in a fast and efficient way, and explored the backend-for-frontend pattern to help solve these issues…

Functional views

As you gain more experience, or start to work on complex projects, the way you write views will evolve and you will start paying more attention to design patterns, testability and consistency. There…

Functional views

As you gain more experience, or start to work on complex projects, the way you write views will evolve and you will start paying more attention to design patterns, testability and consistency. There…

How we do machine learning at iZettle

Data science and machine learning are central at iZettle when building tools to support small businesses and cater to each business’ unique needs. In this post, we’ll describe three of the factors…

How we do machine learning at iZettle

Data science and machine learning are central at iZettle when building tools to support small businesses and cater to each business’ unique needs. In this post, we’ll describe three of the factors…

Web Animation and the Render Pipeline

Being a student of both design and development it sort of makes sense that I would find the art of web animation so fascinating. As a discipline right on the border between the two, the freedom in…

Web Animation and the Render Pipeline

Being a student of both design and development it sort of makes sense that I would find the art of web animation so fascinating. As a discipline right on the border between the two, the freedom in…

Beginners guide to Web Push Notifications using Service Workers

Push notifications are very common in the native mobile application platforms like Android & iOS. The are most effective ways to re-engage users to your apps. In this post we will look at how to…

Beginners guide to Web Push Notifications using Service Workers

Push notifications are very common in the native mobile application platforms like Android & iOS. The are most effective ways to re-engage users to your apps. In this post we will look at how to…

Introducing Form — Layout, styling, and event handling

Building UIs for iOS applications means to layout, style and react to events. Even though UIKit provides most of what we need, there are still areas where the experience can be improved. For example…

Introducing Form — Layout, styling, and event handling

Building UIs for iOS applications means to layout, style and react to events. Even though UIKit provides most of what we need, there are still areas where the experience can be improved. For example…

Introducing Presentation — Formalizing presentations from model to result

View controllers play a central role when building iOS applications. However, building, managing and presenting view controllers is not always straightforward. There are many questions that need to…

Introducing Presentation — Formalizing presentations from model to result

View controllers play a central role when building iOS applications. However, building, managing and presenting view controllers is not always straightforward. There are many questions that need to…

API Design — Deriving Future

In this article, we will explain what asynchronous operations are, why they are useful, and how their APIs are typically designed. Specifically, we will look at an API for performing network…

API Design — Deriving Future

In this article, we will explain what asynchronous operations are, why they are useful, and how their APIs are typically designed. Specifically, we will look at an API for performing network…

API Design — Expanding on Signals

When working with UI frameworks, it is very common with APIs that want to notify the user of changes of different kinds. In Apple frameworks, these are typically expressed through the use of…

API Design — Expanding on Signals

When working with UI frameworks, it is very common with APIs that want to notify the user of changes of different kinds. In Apple frameworks, these are typically expressed through the use of…

API Design — Deriving Signal

In this article, we will explore three abstractions that are useful building blocks in asynchronous event handling. As a use case, we will build an API for registering callbacks to get notified of…

API Design — Deriving Signal

In this article, we will explore three abstractions that are useful building blocks in asynchronous event handling. As a use case, we will build an API for registering callbacks to get notified of…

Introducing Flow — Asynchronous programming made easy

Today we are proud to announce the open sourcing of Flow, a Swift framework for building and maintaining complex asynchronous flows. Flow is modern, lightweight and composable, allowing you to write…

Introducing Flow — Asynchronous programming made easy

Today we are proud to announce the open sourcing of Flow, a Swift framework for building and maintaining complex asynchronous flows. Flow is modern, lightweight and composable, allowing you to write…