Meta Interview Prep

Meta's interview process includes a recruiter call, 1-2 phone screens, and an on-site loop. For engineers, the on-site typically has 4-5 rounds. Phone screens are 45-minute coding sessions focused on algorithms. The on-site includes: - 2 coding interviews (algorithms/data structures) - 1 system design interview - 1 behavioral interview (focused on Meta's values) - Sometimes an additional "ninja" round (coding with product context) Key things to know: - Meta moves fast in their hiring process — typically 3-4 weeks total - Coding interviews use a shared editor, not a whiteboard - They value practical solutions over theoretical perfection - System design should consider Meta's scale: billions of users, real-time data - The behavioral round heavily weighs "move fast" and shipping mentality - Meta hires for level, not for a specific team — team matching happens after the offer

Meta's culture is defined by five core values: Move Fast: This is Meta's most famous principle. They value speed over perfection and shipping over planning. Show that you can make quick decisions, prototype rapidly, and iterate. "Move fast and break things" evolved into "Move fast with stable infrastructure" — speed with responsibility. Be Bold: Meta wants people who take big bets. They ask about calculated risks and unconventional approaches. Playing it safe is seen as a risk in itself. Show times you pushed for an ambitious approach even when others were skeptical. Focus on Long-Term Impact: While moving fast day-to-day, Meta thinks in multi-year cycles. Show you can balance near-term shipping with long-term architectural decisions. Build Social Value: Meta connects billions of people. Show you understand the responsibility that comes with building at this scale and that you think about the community impact of your work. Be Open: Meta has a famously open internal culture — engineers can see most code, most documents, and most decisions. Show you value transparency, share knowledge freely, and seek input from diverse perspectives.

Meta interviewers are looking for practical problem solvers who can ship. Here's what to know: - Start coding sooner rather than later. Meta values execution — don't spend 15 minutes whiteboarding before writing code - They want working code. Pseudo-code is acceptable only for system design - Edge cases matter — test your solution with empty inputs, single elements, and boundary conditions - For system design, focus on the product use case first: "What problem are we solving for the user?" - Meta interviewers often ask "What would you do with more time?" — have an answer ready - Behavioral questions focus on moving fast: "Tell me about a time you shipped something quickly" - They care about impact: quantify your results wherever possible - If you've worked on social/communication products, draw parallels to Meta's products - The "ninja" round simulates a real day at Meta — you'll get a product problem and need to code a solution with realistic constraints