Company interview guide

Meta software engineer interview questions

Practice high-signal coding, product system design, and behavioral questions for Meta software engineering interviews.

Coding speed and accuracyProduct designImpactCross-functional work

Practice guide: Interview content varies by role, level, team, and location. These representative prompts are based on public company guidance and general interview patterns; Meta does not endorse this guide.

Practice library

6 questions, one at a time

Coding questions

Each problem has a full statement, examples, constraints, and a tested solution in Python, Java and C++.

3 questions
01
HardStringSliding windowHash map

Minimum Window Substring

Find the shortest substring of s that contains every character of t.

02
MediumTreeBFS

Binary Tree Right Side View

Return the values you can see from the right side of a binary tree.

03
MediumArrayPrefix sumHash map

Subarray Sum Equals K

Count the contiguous subarrays whose sum equals k.

System design questions

Turn requirements into APIs, data models, architecture choices, bottlenecks, and explicit trade-offs.

1 question
04
System design

How would you design a social news feed?

Feed generation, ranking boundaries, fan-out trade-offs, caching, and product constraints.

Behavioral questions

Prepare truthful evidence of decisions, ownership, collaboration, learning, and measurable results.

2 questions
05
Impact

Tell me about the project where you had the largest impact.

Scope, personal contribution, measurable outcomes, and your understanding of why the work mattered.

06
Execution

Tell me about a time you moved quickly without sacrificing quality.

Pragmatic scope control, safeguards, and outcome ownership.