The only actually senior people who are going to jump through the hoops of doing a 4 hour take home technical assessment are the ones interested in: a) you are

The only actually senior people who are going to jump through the hoops of doing a 4 hour take home technical assessment are the ones interested in: a) you are offering some absurd amount of stock options for something they really think will be valuable in the future b) the net take-home compensation after federal/state income taxes will be absurdly high