Monzo Bank Ios Engineer Interview Questions
& Process

So the interview was basically a technical one. I had to work on some existing iOS code and add a new feature. The goal was to show news articles, but organized by year, in a table view. This meant structuring the ViewModel to handle the data grouping and then making the UI layer support sections. It was pretty collaborative for the most part; the interviewer was nice and we chatted about how to do things while I was coding. We explored different ways and refined the code together. But then, near the end, with just a tiny bit left to finish, the interviewer just abruptly hung up. No goodbyes, no final chat, just gone. It was around the scheduled end time, so maybe they were just rushed, but it felt a bit off, not very professional. The actual coding task was good though, pretty relevant to real iOS dev work, but the ending was kinda weird.

The company's website has a good outline of their hiring process, and my experience followed that scheme pretty closely. It started with an initial call, then a take-home task. The take-home involved debugging an app and getting it ready for release within a time limit. After that, there was a discussion about the take-home task where they wanted to know about my approach and the decisions I made. I didn't advance further because my refactoring wasn't up to par.

It was a pretty long process: first, a recruiter call, then an engineer interview where I had to discuss a project I fully developed. After that, there was a take-home assignment (or live coding, but I chose the take-home). The take-home was supposed to be done in 4 hours and included items for a future iteration, with evaluation based on prioritization. The project was a small legacy app with two UIKit/storyboard screens, and I could refactor as needed. I decided to switch everything to SwiftUI and adopted MVVM for testable architecture, while keeping the minimum iOS version requirement. Next, I reviewed my solution with an engineer. Finally, there were two interviews: System Design, where I had to design a Spotify screen with songs and folders, and a Behavioral interview. In the behavioral part, I had to elaborate on 4 questions/situations using the STAR method, including topics like mentoring and driving initiatives. The people were really nice, and I got detailed feedback at every stage.