My DD refused taking a bottle until 9 months of age. After she was born, we gave her one bottle a day per her pediatrician's advice, and then at 4 months we slacked for two weeks. That was enough - she flat out refused a bottle after that. We tried everything - syringes, different kinds of bottles, different nipples, different people feeding her, and eventually our pediatrician told us to stop trying because she probably wouldn't ever accept a bottle. She does take one now, but we thought she would never do it.
I disagree with the PP about this not being an excuse to not accept a job. What's more important? I've heard that babies won't starve themselves and will eventually take a bottle, but I think it's an inhumane proposition. Transitioning your daughter to daycare while not fully equipped to take nourishment from a bottle rather than your breast will be traumatic. I don't mean to be harsh, but I think you should think long and hard about this and consider waiting until your daughter is better equipped to go into the care of another person.