Is a Facebook coding interview hard?

Yes, the Facebook coding interview (now under Meta) is widely regarded as challenging. It requires thorough preparation in data structures, algorithms, and problem-solving. Here are a few reasons why it's considered difficult:

1. Complex Coding Problems

• The interview focuses heavily on coding challenges that involve a deep understanding of data structures like arrays, linked lists, trees, and graphs, as well as algorithmic concepts such as dynamic programming, recursion, and graph traversal.
• Questions are typically medium to hard level, similar to problems found on platforms like LeetCode or HackerRank, requiring optimal solutions and good problem-solving strategies.

2. Time Constraints

• Each coding problem must be solved within a strict 45-60 minute time window, during which candidates are expected to not only come up with a solution but also optimize it in terms of time and space complexity.
• It’s important to articulate your thought process while coding, which adds pressure.

3. Behavioral and Technical Fit

• Meta also assesses cultural fit through behavioral questions. You’ll need to demonstrate alignment with Meta's values like "Move Fast" and "Focus on Impact."
• This requires candidates to not only ace the technical interview but also perform well in behavioral rounds, making it a comprehensive evaluation.

4. System Design for Senior Roles

• For more experienced roles, you will face system design questions that assess your ability to architect scalable systems. These interviews are known for their complexity as they require understanding of distributed systems, scalability, and trade-offs between different architectural approaches.

Feedback from Candidates:

• Many candidates on Glassdoor and Blind describe the Facebook interview as one of the most challenging they’ve encountered, due to the combination of time pressure, technical depth, and high expectations for clear communication.

Sources:

• Glassdoor - Meta Interview Reviews
• LeetCode - Facebook Interview Preparation

While the Facebook coding interview is challenging, thorough preparation and practice can help you succeed.