Why software has bugs

Taking a look into the what, how, why and prevention of bugs in software

Building a Web and Mobile Design System

How we built a web and mobile design system for React and React Native, using a single Storybook instance.

One Year of Kubernetes

We migrated our backend to Kubernetes a year ago. How's it been since then?

Ad-hoc static code analysis in Go

Application of a custom go-vet solution to improve our codebase

Managing GitHub with Terraform

We don't use Terraform just for managing AWS, we use it for GitHub too.

Personal Diaries (Alex) - Onboarding

A personal look into being a new joiner the right way, the Countingup experience

Aurora MySQL v2 upgrade

With v1 reaching end of life, we cover some of the challenges we've faced upgrading to v2 and what steps we've taken to prepare for future upgrades.

Accounting in real-time

In the Countingup app, accounting happens in real-time, as transactions happen. We look at some of the architecture and software design that makes this work.

A/B Testing at Countingup

A glimpse at our way of validating new functionalities with data

Personal Diaries (Alex) - The Interview

A personal look into the Countingup interview process and my experience

Our engineering hiring process

Interviewing is always a daunting experience. We want to outline how our process works and why we do what we do in our engineering interview.

Engineering Superpowers with OpenAPI

We use OpenAPI to define of our service endpoints. This gives us engineering superpowers throughout our stack.

canideploy?...👍

Our custom Slack command for communicating production releases.

Appium Tests in CI

Automated app tests help us be confident in our work. How do we run those in our CI pipelines using Semaphore and Appium?

Accounting concepts for developers

Introduction to some core accounting concepts and how we might model them

Automated testing in production, 5 minutes at a time

We have a service that performs 'testing in production' that we call system-verification. This service has a suite of tests that run every 5 minutes.