I'll get straight to the point: They said my system design had too much eventual consistency at the persistence layer.
I used relational and SQL databases, which have atomicity and do not suffer from eventual consistency. This shows you how incompetent these engineers are.
Avoid at all costs; the process is a waste of time. They have a take-home assignment that takes a few hours to write some useless and trivial code. The engineers don't want to be there.
Heed the advice on Glassdoor and Blind; this place is dead.
Design a payment gateway. Make sure to explain to the incompetent devs that relational databases don't typically suffer from eventual consistency.
The following metrics were computed from 1 interview experience for the Checkout.com S S E (Senior Software Engineer) role in London, United Kingdom.
Checkout.com's interview process for their S S E (Senior Software Engineer) roles in London, the United Kingdom is extremely selective, failing the vast majority of engineers.
Candidates reported having very negative feelings for Checkout.com's S S E (Senior Software Engineer) interview process in London, United Kingdom.