What does meta use for coding interviews?

For coding interviews at Meta (formerly Facebook), the company typically uses the following tools and focuses on specific coding skills:

1. Coding Platform

Meta usually conducts coding interviews on CoderPad, HackerRank, or other shared code editors. In some cases, the coding environment is basic, meaning there may be no syntax highlighting or auto-completion, so candidates need to be comfortable writing clean, error-free code without relying on advanced editor features.

• CoderPad: A real-time collaborative coding platform used during technical phone screens or virtual interviews. It allows candidates to write code in various programming languages and run test cases.
• HackerRank: In some cases, initial technical screenings may happen on platforms like HackerRank, where candidates solve pre-defined coding challenges.

2. Programming Languages

Meta allows candidates to use their preferred programming language during the interview. Commonly used languages include:

• Python
• Java
• C++
• JavaScript
• Go
• PHP (used internally at Meta)

The choice of language is flexible, but it's important to use a language you’re highly proficient in and can solve problems quickly and accurately.

3. Focus Areas

The coding interviews focus on data structures and algorithms. Candidates are expected to solve problems related to:

• Arrays and Strings
• Trees and Graphs
• Hash Maps
• Dynamic Programming
• Sorting and Searching Algorithms
• Recursion and Backtracking

Problems often revolve around real-world scenarios that simulate the types of challenges Meta engineers face in optimizing performance and scaling systems.

4. Behavioral Component

In addition to technical coding questions, Meta interviewers assess how you approach problems. Candidates are expected to:

• Explain their thought process clearly.
• Walk through their solution step by step.
• Discuss potential optimizations (e.g., improving time and space complexity).
• Communicate effectively, especially in team-oriented scenarios.

5. Practice Resources

To prepare for Meta coding interviews, candidates can use:

• LeetCode (focusing on medium to hard problems).
• HackerRank for practicing coding problems.
• Grokking the Coding Interview and Cracking the Coding Interview for structured learning on coding interview patterns.

Sources:

• Glassdoor Meta Interview Reviews