Software Engineer Front End Interview Questions

946 software engineer front end interview questions shared by candidates

Can you explain the difference between the Task (Macrotask) Queue and the Microtask Queue in the JavaScript Event Loop? Specifically, how does the browser prioritize Promise resolutions over scheduled callbacks from a setTimeout function, and what impact does this have on UI rendering performance?
avatar

Software Engineer - Front End

Interviewed at Amazon

3.5
Mar 25, 2026

Can you explain the difference between the Task (Macrotask) Queue and the Microtask Queue in the JavaScript Event Loop? Specifically, how does the browser prioritize Promise resolutions over scheduled callbacks from a setTimeout function, and what impact does this have on UI rendering performance?

1st round - Initial phone interview to assess candidate suitability. Basic chat followed by simple questions with JS 2nd round - Technical coding round using vanilla Javascript based on ES6 API Did not progress to third round
avatar

Front-end Software Engineer

Interviewed at Canva

3.9
Aug 2, 2021

1st round - Initial phone interview to assess candidate suitability. Basic chat followed by simple questions with JS 2nd round - Technical coding round using vanilla Javascript based on ES6 API Did not progress to third round

Viewing 791 - 800 interview questions

Glassdoor has 946 interview questions and reports from Software engineer front end interviews. Prepare for your interview. Get hired. Love your job.