As part of your job, you'll be expected to become an expert in some tool or technology and teach that to other members of the team and volunteer contributors.
For this, good written communication is important.
In the style of a short blog post (max 500 words), please describe a technique or tool that you have used to debug code in the past.
When is a good time to use this technique to solve a problem?
When is this technique not appropriate?
- Implementation Plan
- Situation analysis
- Product Analysis
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In order to proceed to the next stage of the interview process, we want to make sure that you are genuinely excited about Mozilla and are able to solve the types of challenges we face.
If you are, please start this application by taking the challenge so that the Engineering team leads at Mozilla can evaluate your key competencies before the interview.
A Firefox platform engineer is responsible for writing, debugging, and testing Firefox software. Come help us make Firefox the best browser in the world and ship your code to millions of users.
Within this general job description, Mozilla is looking to fill several positions and recruit or train experts in one of the following areas:
- A Windows engineer who will be responsible for integration and performance of Firefox on Windows.
- A MacOS engineer who will be responsible for integration and performance of Firefox on Mac.
- A performance engineer to focus on profiling, debugging, and measurement of performance issues.
- An engineer to focus on the Firefox install and update backend as we work toward faster decoupled release cycle.
As part of the open-source Mozilla project, you will be working in public and with both employees and a volunteer community.
- Writing, maintaining, and debugging Firefox software in collaboration with the larger team.
- Designing product measurements and making engineering decisions based on collected data.
- Mentoring volunteer contributors.
- Writing and executing test plans for new or existing features.
- Making engineering decisions about an area of code (code module).
- Tracking and making decisions about incoming bugs reports.
- Experience writing code. A college degree is not necessary or sufficient.
- Ability to learn new skills and solve unfamiliar problems effectively.
- Experience debugging or profiling.
- Good written and verbal communication skills.
- To be in a time zone with the rest of the team, candidates must be located in North or South America, Europe, Africa, or the Middle East.
- Low-level debugging and disassembly on x86, x86-64 or ARM processors
- Multi-process debugging and profiling
- Statistical analysis
- The Windows event loop, especially in a multi-thread, multi-process environment.
- Building a touch experience for Firefox on Windows
- Placing Windows processes in a security sandbox
- The cocoa event loop, especially in a multi-process environment
- Placing processes in a security sandbox
- Knowledge of operating systems internals, filesystems, compilers, software impact on power consumption, etc
- Experience analyzing and debugging software performance problems
Install and update focus
- Experience with cryptographic signing and verification.
- Experience with security threat models.
Mozilla is a thriving global community of technologists, thinkers and builders working collaboratively and openly to keep the Internet alive and accessible for all.
When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every day. Join our team today and together we’ll make a better Web for tomorrow.