I was offered a "Senior Engineer" position at General Dynamics right out of grad school in 2015. I ended up not taking the position, but what are you expecting

I was offered a "Senior Engineer" position at General Dynamics right out of grad school in 2015. I ended up not taking the position, but what are you expecting junior people to do? Decline the great sounding title out of a sense of duty? At this point I try to completely ignore job titles and judge people based on their actual experience and demonstrated capability.