Hi Angel,
There's no job that will be 100% cruelty free unless you work for a vegan company. Check out
www.choosecrueltyfree.org.au. Then again, it's not possible to be 100% vegan either. They use animal bits in everything from food to glue.
I understand what you are going thru. I work at a vet clinic and sell meat products, euthanase animals etc. It's hard but the way I look at it is I'm also saving and helping them at the same time. I've also changed most of our food and treats to veg friendly, cruelty free ones.
If you have a say at your current job, try and to substitute some of those products or introduce more veg stuff. But I'm not sure how Boost works, so not sure if it's possible.
If you're not happy def look around, but you'll probably find that no matter what job you go for you will still be handing some kind of animal by-product.
Good luck!