I had two screening rounds and 3 interview loop rounds, Meta leetcode questions, systems design can be extensive. Questions can be repeated so look out for all the available questions online. Systems debugging is a very important topic
Interview questions [1]
Question 1
Why Meta?
What are different internet web protocols
talk about internet.
I applied through a recruiter. I interviewed at Meta (Menlo Park, CA) in Feb 2026
Interview
Started with a recruiter screen and a 45 min tech/screening round with 2 coding questions on string and array logic- more like LC mediums. The onsite was 4 rounds back to back: systems/linux, coding, design, and behavioral. The linux round was definitely the hardest part. It started with a basic troubleshooting scenario about a slow server and went deep into kernel internals, syscalls, and network retransmits. You really need to know your tools like tcpdump and strace. Design was about building a messaging platform at scale, and behavioral was standard as usual. For prep I brushed up on linux fundamentals, LC mediums for coding, and also went through some reddit posts. Also did a mock on Prepfully with an actual Meta PE. That turned out to be a lifesaver because it helped me tighten up my networking answers which were a bit weak. The systems round is a total filter I believe so you have to know your Linux internals inside out. Overall it's a fair process but very technical.
Recuriter round then technical screen with an engineer that then final stage which is four rounds, 2 coding 1 system design and one behavioural, for Production Engineer the questions are often a mix of LC questions and practical file system operations
Interview questions [1]
Question 1
Reading input from file
BFS/DFS Basic Graph problems
There are 2 rounds, first has PE basics and coding, second has PE basics, coding and Behavioral. Learn linux, OS, Networking in detail. They dig deep into whatever u say. Coding is usually easy, prepare file parsing questions
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