Senior Frontend Engineer Interview Questions

2,920 senior frontend engineer interview questions shared by candidates

Considering you have file that contains various file paths as comma delimited strings as input. Example - ``` a,b,c,d,e,g a,d,f,e,r b,t,y,a,r ``` Each line represents a path. Assume that there is folder b and d inside a and then folders are further nested inside both b and d too. The task is to prepare a UI where we should have a dropdown listing down the first level of folders and as you make a selection, more dropdowns should appear to choose the folders from available options at each nested level. This should happen really efficiently with zero lag. These strings can have millions of values with billions of such strings.
avatar

Senior Frontend Engineer

Interviewed at SigNoz

2.3
Apr 16, 2025

Considering you have file that contains various file paths as comma delimited strings as input. Example - ``` a,b,c,d,e,g a,d,f,e,r b,t,y,a,r ``` Each line represents a path. Assume that there is folder b and d inside a and then folders are further nested inside both b and d too. The task is to prepare a UI where we should have a dropdown listing down the first level of folders and as you make a selection, more dropdowns should appear to choose the folders from available options at each nested level. This should happen really efficiently with zero lag. These strings can have millions of values with billions of such strings.

Viewing 1051 - 1060 interview questions

Glassdoor has 2,920 interview questions and reports from Senior frontend engineer interviews. Prepare for your interview. Get hired. Love your job.