Why ask for more time?
If you’re about to get multiple offers, you deserve to be able to consider all your offers. They interview multiple candidates at one time. You deserve to have all your options on the table for you at the same time.
Example of this process
"I noticed the offer expires in three days. I’m afraid I won’t be able to make a decision on this kind of timeline. This is a big choice and one I need to discuss with my family and mentors. I’m going to need more time to make a decision."
"I appreciate your concerns. But we’re really strict on our timeline. It’s to be fair to other candidates. If you’re not going to take the offer, we need to be fair to other candidates that are on a timeline."
"Sorry, that’s not going to work for me. 72 hours is just too short of a window to reasonably make a call. This is a big decision for me and one I’m not going to rush to."
"Fine, how about we extend things by another couple days?"
"I’m currently in the process with a few other companies which is going to take me another week. I’m not going to be able to make a decision before my other offers come through."
How aggressive should you be? Unfortunately, common logic dictates that the more leverage you have, the firmer you get to stand your ground. If you’re a senior engineer with multiple interviews and a good chance of getting multiple offers, you can afford to push the timeline back more aggressively. If you’re a new graduate, your leverage is not as great, and even simple things like extending a timeline become trickier. If you’re worried about this, try this less aggressive approach.
“This is a really big decision and not one I want to be rushed into. Is there a specific reason I need to sign in the next two days? I want to make an informed decision while being fair to you and the other candidates.”