I applied through a recruiter.
The coding interview took the majority of the hour they allotted for this step. They provide a mock of a UI that you then need to code up in your favorite FE framework. It starts simple with a couple of features that you then enhance as you complete each part.
The following metrics were computed from 1 interview experience for the Retool Sr. Front End Developer role.
Retool's interview process for their Sr. Front End Developer roles is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for Retool's Sr. Front End Developer interview process.