There was one assignment question that required a queuing system. The interviewers were looking only for answers matching their canned templates. There was no reason for the rejection beyond the solution not exactly matching the template.
Bank queuing system design and code.
The following metrics were computed from 48 interview experiences for the Monzo Software Engineer role.
Monzo's interview process for their Software Engineer roles is extremely selective, failing the vast majority of engineers.
Candidates reported having mixed feelings for Monzo's Software Engineer interview process.