Senior Software Engineer Interview Experience - London, England

September 30, 2025

Positive ExperienceNo Offer

Process

Good. I had 2 algorithm interviews, 1 design interview, and 1 behavioral interview, with small coding questions at the end.

The office in London is very nice.

Algorithm questions involved tree traversal, which I needed to know really well.

My suggestion is to solve as many LeetCode problems as possible.

Questions

The question was how to design a botnet.

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Interview Statistics

The following metrics were computed from 1 interview experience for the Meta Senior Software Engineer role in London, England.

Success Rate

Pass Rate

Meta's interview process for their Senior Software Engineer roles in London, England is extremely selective, failing the vast majority of engineers.

Experience Rating

Positive100%

Neutral0%

Negative0%

Candidates reported having very good feelings for Meta's Senior Software Engineer interview process in London, England.

Meta Interview Questions

Minimum Remove to Make Valid Parentheses

Medium

Given a string with parentheses, determine the minimum number of parentheses you must remove to make the string valid. A valid string has balanced and properly nested parentheses.

StringsStacksTwo Pointers

Valid Word Abbreviation

Easy

Determine if a given abbreviation is valid for a given word. An abbreviation can contain digits representing the number of skipped characters.

StringsTwo Pointers

Binary Tree Vertical Order Traversal

Medium

Traverse a binary tree and return a list of node values for each vertical line, ordered from left to right. Nodes on the same vertical line should be ordered from top to bottom.

Trees