How long are coding interviews?

The duration of coding interviews can vary depending on the company, the position, and the overall interview process. Here's a general breakdown of what to expect in terms of timing:

1. Standard Coding Interviews

For most software engineering positions, especially at major tech companies, coding interviews typically last between 45 minutes to 1 hour. This time frame allows the interviewer to:

• Briefly introduce themselves and the format of the interview (about 5 minutes).
• Present one or two coding problems for you to solve (30-45 minutes).
• Leave a few minutes at the end for any questions you might have about the company or role (5-10 minutes).

2. Technical Screening

Before a more formal set of onsite interviews, companies often conduct a shorter technical screening, especially if the screening is over the phone or via a video call. These can last between 30 to 45 minutes and usually focus on solving simpler coding problems or discussing technical concepts.

3. Onsite Interview Loops

For onsite interviews, candidates often go through multiple rounds of interviews in one day. Each round might last about an hour, similar to the standard coding interview format. However, the total time spent interviewing onsite can range from 3 to 6 hours, depending on the company's process. During an onsite loop, you may face:

• Multiple coding interviews.
• System design interviews.
• Behavioral interviews.
• A lunch interview which is usually more casual but still part of the evaluation.

4. Remote or Virtual Onsites

With the rise of remote interviewing, many companies conduct "virtual onsites" which mimic the structure of an onsite interview day but are done entirely online. These also involve back-to-back interviews over a span of several hours.

5. Pair Programming Interviews

Some companies, especially those that emphasize agile methodologies, might include a pair programming session as part of the interview process. These sessions can be slightly longer (about 1 to 2 hours) and involve working collaboratively with an interviewer or another engineer to solve problems or extend an existing codebase.

Preparation Tips

• Confirm Duration: When you're scheduled for an interview, confirm the duration so you can manage your time effectively during the interview.
• Practice Timed Sessions: While preparing, time yourself to get used to solving problems within the typical duration of a coding interview.
• Energy Management: For longer interview days, such as onsite loops, ensure you manage your energy levels effectively, taking brief breaks if allowed, staying hydrated, and maintaining focus throughout the day.

Conclusion

Understanding the typical duration of coding interviews can help you prepare and perform better. Whether you're facing a quick technical screen or a full day of onsite interviews, practicing under timed conditions can help you develop the skills to think and code effectively within the allotted time.