An onsite interview is the main interview loop, historically held at the employer's office across several back to back sessions in one day. Many companies now run the same loop remotely and still call it the onsite. Expect four to six interviews of forty-five to sixty minutes, with different interviewers and different focuses.
What Onsite Interview means in practice
A typical onsite covers the range of the role in one sitting: for engineering, two coding rounds, a system design round, a behavioral round and a hiring manager conversation; for other functions, a mix of skill exercises, stakeholder sessions and a presentation. Interviewers are briefed to cover assigned areas and write feedback afterward, usually before they see anyone else's. Lunch or an office tour is common and is generally not scored, though anything said to anyone can reach the debrief. Onsites get scheduled once the screens pass, and results follow within a few days.
Why it matters for candidates
The onsite is where most of the evidence in your file gets created, and it is a stamina test as much as a skills test. Each session starts cold, so a strong first round does not carry into the third. Repeating one story across interviewers is a common own goal, since the feedback is compared afterward. Treating every session as a fresh start, and asking what earlier rounds covered, keeps the coverage broad.
How to prepare
- Request the schedule with names, roles and session focuses in advance.
- Map different stories to different interviewers so nothing repeats.
- Prepare questions tailored to each interviewer's function.
- Plan food, water and travel, or your remote setup, for a long day.
- Reset between sessions instead of replaying the last one.
Example
A candidate's onsite runs from ten to four: two coding sessions, design, behavioral, then a close with the hiring manager. Between rounds they note which stories they have used. In the fourth session the interviewer asks about handling conflict, and rather than repeat the incident already told to the manager, they use a second example. The debrief later shows five separate data points instead of the same one told five times.
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