Cracking Meta's Software Engineer Interview: Tackling Valid Parentheses Challenge

Software Engineering
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meta | Software Engineer | Interview Experience

Interview Date: Not specified
Result: Passed phone screen
Difficulty: Not specified

Interview Process

I received a LinkedIn message from a Meta recruiter and had a 30-minute call where she asked about my background, current projects, and my interest in Meta. She explained the interview process and mentioned the compensation range was $170K-$220K base. I was then scheduled for a technical phone screen, which lasted 45 minutes with a senior engineer from their team. The session began with brief introductions before moving on to coding problems.

Technical Questions

  1. Valid Parentheses
    LeetCode Problem

    • Task: Check if parentheses, brackets, and braces are properly matched in a string.
    • Approach: Stack-based solution. Discussed time complexity and edge cases.

  2. Nested List Weight Sum
    LeetCode Problem

    • Task: Calculate the weighted sum of a nested list where elements at deeper levels get multiplied by their depth.
    • Approach: Initially solved using recursion, then implemented an iterative approach with BFS and a queue.

Tips & Insights

The phone screen felt fair. The problems were standard LeetCode questions, and the interviewer focused more on my problem-solving approach rather than just the final answer. Good luck to everyone!