What Is an Onsite Interview?

Full Definition

Onsite is the final-stage interview loop. Pre-2020 these were in-person at the company office (paid travel for senior candidates, including hotel and meals). Post-COVID, the term 'onsite' persists but the loop is usually virtual: 4-6 video calls back-to-back in a single day. The day typically includes 2 coding rounds, 1-2 system design rounds (for L4+), 1 behavioral round, and sometimes a 'hiring manager round' or 'team match'. Each round is 45-60 minutes. Companies usually break the day into morning + lunch + afternoon to manage candidate fatigue, but virtual loops have less natural pause. Common onsite-day mistakes: skipping the in-between breaks (you need them to reset), not eating during the lunch window, drinking too much caffeine and crashing in the afternoon, mismanaging the 'do you have questions for us' slot at the end of each round (canned questions are worse than no questions). Strong candidates treat the onsite as one continuous performance: they pace themselves, take notes between rounds on what they think went well or poorly, and use the final 'team match' or HM round to reinforce signal from earlier rounds.