You can do both. Having a job doesn't mean you'll spend your 24 hours a day with it isn't it? For a job 8 hours a day will be at most. You still have a lot remaining hours for the day to do bounties.
Indeed we are not remain at the job all the time we get a lot of free time so we should use it constructively, bitcoin is currency that can be used to make extra income very easily and it will not affect your way of getting profit with your job, if you are at job for 6 hours spend then 4 hours with crypto currency for making extra earning and the reaming 12 hours you can use to take rest and get fresh, and if you are an investors then you can earn profit 24/7 without any problem as you will be at job but your money will grow.