Skip to contentSkip to footer

Senior Frontend Engineer Interview Questions

Salaries
Interviews

1,539 senior frontend engineer interview questions shared by candidates

Both the live coding and the system design interviews were focused on data and tables (which makes sense given the company’s domain). So, if you’re preparing, make sure you’re a wizard when it comes to data visualization and optimization!
avatar

Senior Frontend Engineer

Interviewed at Datadog

4★
Nov 3, 2025

Both the live coding and the system design interviews were focused on data and tables (which makes sense given the company’s domain). So, if you’re preparing, make sure you’re a wizard when it comes to data visualization and optimization!

The first code challenge was about matching different tags that a user could add in a multi-select list and unifying them if they belonged to the same group. I thought it required an inverted index, so I over-complicated the solution. A simpler approach using multiple loops would actually have been more effective. The second challenge was about React and involved building a simple table, then progressively adding features like filters, sorting, etc. For the cultural-type interviews, the questions were about previous projects and how I handled certain scenarios—for example, how I deal with situations where I disagree with my manager. For the system-design interview, I was asked to design a dashboard that supports multiple widgets.
avatar

Senior Frontend Engineer

Interviewed at Datadog

4★
Nov 15, 2025

The first code challenge was about matching different tags that a user could add in a multi-select list and unifying them if they belonged to the same group. I thought it required an inverted index, so I over-complicated the solution. A simpler approach using multiple loops would actually have been more effective. The second challenge was about React and involved building a simple table, then progressively adding features like filters, sorting, etc. For the cultural-type interviews, the questions were about previous projects and how I handled certain scenarios—for example, how I deal with situations where I disagree with my manager. For the system-design interview, I was asked to design a dashboard that supports multiple widgets.

Viewing 431 - 440 interview questions

Glassdoor has 1,539 interview questions and reports from Senior frontend engineer interviews. Prepare for your interview. Get hired. Love your job.