What topics does Mozilla test in interviews?

Commonly reported topics include Linked list, C++, Diversity, Management approach.

Mozilla interview questions

From 3 candidate accounts, updated Oct 12, 2026

Candidate accounts: 3
Rounds on average: 1
Rounds in every loop: 1
Open roles at Mozilla: 91

How the loop works

This guide draws on 3 first-hand interview accounts from Hacker News. Candidates describe about 1 round on average, most often a phone screen and behavioral interviews.

These 3 writeups cover software engineering roles. All of them were posted under a forum handle, so we could not verify the authors’ identities.

See open roles at Mozilla

Interview experiences at Mozilla

Role not stated

Outcome not shared

unknown. 1 round. Shared by nfriedly on hn, 2018-11-04

1Phone screenPhone screenPassed, but the next interviewer never showed and it was never rescheduled.

Firefox OS

Outcome not shared

unknown. 1 round. Shared by OnionBlender on hn, 2025-08-01

1Phone interviewPhone screenImplement a linked list in C++. Nerves took over despite a helpful interviewer.Covered: Linked list, C++

What Mozilla is hiring for now

91 open roles in our index. Advertised pay floors run $137k to $180k (median $163k, from 21 postings that state pay).

Most-posted roles

Senior Software Engineer, Add-Ons10
Senior Staff Product Manager, Browser Control Platform10
Senior Product Manager, Mobile9
Senior Security Engineer - SecOps8
Staff Operations Engineer4
Staff Product Engineer, Enterprise AI3

Open roles at Mozilla

See all 91 roles

Mozilla interviews: FAQ

What is the interview process like at Mozilla?: This guide draws on 3 first-hand interview accounts from Hacker News. Candidates describe about 1 round on average, most often a phone screen and behavioral interviews.
What topics does Mozilla test in interviews?: Commonly reported topics include Linked list, C++, Diversity, Management approach.

These guides summarize public, first-hand interview experiences shared by candidates. They describe the shape of each loop and the topics that came up, not a leaked question bank, and every experience links back to its original source. Processes change often. Treat this as directional prep, not a script.