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Title image that reads 'Delightful Payments' with an image of colourful coins.
Technology
3 July 2024

Delightful Payments

This post is about how we built the Delightful Payments which directly replaced our P2P (Monzo-to-Monzo) and FPS (bank transfers) payment flows, including how we iterated on product in-parallel with design, and continuous feedback cycles.

Image of the title: Securing our software supply-chain better with reproducible builds for enclaves. The image has a bright coral border.
Technology
20 June 2024

Securing our software supply-chain better with reproducible builds for enclaves

This blog talks about how we protect our workloads against supply chain attacks, specifically by achieving bit-by-bit reproducible builds, and how we have adopted Nix an alternative to Docker for build environments.

Image of the title that reads: 'How we use incremental modelling to handle billions of events every day' in hot coral writing, with a turquoise graphic of a phone.
Data
Technology
29 May 2024

How we use incremental modelling to handle billions of events every day

This post is an overview of how we leverage incremental modelling, a data transformation technique which helps us scale sustainably as we blast off to 10 million customers 🚀

Image that says: How we measured change aversion with our new home screen
Technology
26 April 2024

How we measured change aversion with our new home screen

When we launched our new Monzo home screen, Katherine spent the past year focused on designing, launching and analysing experiments to understand how customers reacted to their new app. This blog explains how she measured change aversion.

Header image that says 'User Research Insight to Impact: The Art of Scaling Impact and Crafting Goal-Driven Metrics' with an image of a magnifying glass and a test tube in the bottom right corner.
Technology
Design
15 March 2024

User Research Insight to Impact: The Art of Scaling Impact and Crafting Goal-Driven Metrics

Drawing upon the wisdom and practices of our user research team at Monzo, this blog post captures ways to scale user research impact, craft effective goals, and define clear metrics.

Title image that says: 'Starting from scratch as a new engineer at Monzo', with an image of a door opening and someone stepping out.
Technology
8 March 2024

Starting from scratch as a new engineer at Monzo

I’m Grace, and I joined Monzo in October ’23 as a Backend Engineer in Fincrime Business Banking. I’m here to convince you to apply for that role you really want, and about how exciting, challenging and rewarding changing roles has been for me.

Image banner that says 'Moving monzo.com'
Technology
1 March 2024

Moving monzo.com

In 2022, we embarked on a long journey to move our main website. The whole process took us from June of 2022 to November of 2023, with plenty of fun curveballs along the way. Let’s dig into what it takes to migrate monzo.com.

A title image that reads 'How we use design to create business impact' with a graphic of a brightly coloured phone
Technology
Design
22 February 2024

How we use design to create business impact

This post delves into how Monzo is building on our product-led growth by adopting new growth design ways of working and how uniquely positioned design is as a business tool for growth. Buckle-up!

Title image that says 'What are Monzo's technical expectations for Engineering Leaders?', with an image of a green traffic light
Technology
19 February 2024

What are Monzo's technical expectations for Engineering Leaders?

This post will explore how EMs at Monzo continue to leverage their software engineering backgrounds in practice, and how Monzo assesses those skills in our hiring process.

Image of the title: How to create a customer segmentation?, with an image of a cake with a slice cut out
Technology
15 February 2024

How to create a customer segmentation: choosing the right segmentation approach

Customer segmentation is the art of dividing customers into useful groups, but there are a lot of pitfalls to avoid along the way. Here is Monzo’s guide to help you decide your segmentation approach, collect the right data, and more.

The title words 'How we built a queue on top of Kafka' against a hot coral Monzo background, with pictures of a puzzle graphic
Technology
25 January 2024

How we built a queue on top of Kafka

This blog covers core parts of the journey Constantign embarked on when he raised his first "small change" pull request, and how over time we have built a rich client library and set of abstractions that sit on top of Kafka

Image that says 'How we unified our customers’ activity on the new home screen' with a graphic of the Monzo home screen and a paint roller
Technology
10 January 2024

How we unified our customers’ activity on the new home screen

In this blog post, we explore how we built our home screen, a single stream of activity that lets you glance over the latest updates across all your bank accounts! Less searching around, less app-hopping, less confusion. 

Technology
22 December 2023

Building Year in Monzo – as told by engineering

We’ve shared the behind the scenes insights into how we wrote 5 million Years in Monzo, and the magic behind the data. Now we’re going to dig into how we turned this data into the Year in Monzo experience you know and love.

Headline says 'Securing admin access to Monzo's platform' with a cartoon of two locks on the bottom right
Technology
15 December 2023

Securing admin access to Monzo’s platform

Monzo runs on a shared platform of infrastructure that hosts our microservices. In this post, we’ll discuss how we broker access to our infrastructure credentials with a system that is resistant to attacks even from the team that maintains it.

Image shows the words 'A Day in the Life of a Technical Programme Manager at Monzo' with a bright green border and a celebratory graphic on the bottom right.
Technology
24 November 2023

A Day in the Life of a Technical Programme Manager at Monzo

The Technical Programme Manager (TPM for short) role is hugely varied. I want to take you on a journey through a typical day in my life as a Technical Programme Manager here at Monzo.