Onsite Interview Guide 2026

The Modern Onsite: Virtual vs In-Person

Most FAANG and top unicorn onsites are virtual in 2026. The structure is the same as in-person: 4-6 rounds with 5-10 minute breaks between. The key logistical difference: your home environment is now part of the interview. A quiet room, stable internet, working audio, and a second monitor for code sharing are not optional. Test all of these the night before.

For the few companies still doing in-person onsites: arrive 15-20 minutes early, bring water, and identify restrooms before your loop starts. These are not minor details. Physical discomfort compounds over 6 hours.

Energy Management Across Rounds

An onsite loop runs 4-6 hours total. Cognitive performance degrades across that window. Candidates consistently underperform in later rounds not because of skill gaps but because of fatigue. Treat the onsite like an athletic event: manage your energy budget, not just your preparation.

Between rounds: do not review notes or try to mentally replay what you said in the previous round. It is wasted energy and increases anxiety. Stand up, move, eat something small, and drink water. Come into each round fresh, not optimizing the previous one.

The night before: do not grind LeetCode. You will not learn a new skill the night before an interview. You will only exhaust yourself. Light review of your behavioral stories (30 minutes maximum) and early sleep is the correct preparation.

What a Bad Round Means

Every experienced candidate has had a bad round in a loop they passed. Debriefs aggregate signal across all rounds. One round where you struggled does not mean you are done. What matters is the overall packet.

The mental mistake to avoid: treating a bad round as if the interview is over. Candidates who mentally give up after a difficult round perform worse in subsequent rounds, making a recoverable situation unrecoverable. Treat each round as independent. Even if you are certain the previous round was weak, perform at full effort in the next one.

Questions to Ask Your Interviewers

Most rounds end with 5 minutes for your questions. Not asking questions, or asking weak questions, is a missed signal. Good questions: "What does a strong first 90 days look like for someone in this role?", "What technical problems does the team face that I'd be working on?", "What's the biggest challenge the team is currently navigating?"

Questions that score poorly: "What's the culture like?" (too generic), "Do you use Agile?" (too trivial), "How much do you travel?" (signals wrong priorities). Ask about the actual work and the team's current challenges. Interviewers remember candidates who asked thoughtful questions.