Lead Backend Developer Interview Questions

12,385 lead backend developer interview questions shared by candidates

Given an array of positive decimal numbers, return the minimum number of sets of a maximum size. For example, if the maximum size was 4.0, group the positive decimals into the smallest number of sets where each set sums to less that or equal to 4.0, and return the number of sets.
avatar

Senior Backend Engineer

Interviewed at DoorDash

3.6
Sep 25, 2023

Given an array of positive decimal numbers, return the minimum number of sets of a maximum size. For example, if the maximum size was 4.0, group the positive decimals into the smallest number of sets where each set sums to less that or equal to 4.0, and return the number of sets.

Q: What was the one thing that they asked you? Design a URL shortening service like TinyURL. They wanted to hear about the API design, database schema, how to handle collisions, rate limiting, and scaling it to millions of users.
avatar

Backend Developer

Interviewed at Google

4.4
Jul 26, 2025

Q: What was the one thing that they asked you? Design a URL shortening service like TinyURL. They wanted to hear about the API design, database schema, how to handle collisions, rate limiting, and scaling it to millions of users.

Viewing 8811 - 8820 interview questions

Glassdoor has 12,385 interview questions and reports from Lead backend developer interviews. Prepare for your interview. Get hired. Love your job.