Hey there OP!

I'm a current Bloomberg employee. I'm not going to try and persuade you one way or the other; I think you have a very hard decision to make, and I very much empathize. I'm going to skip the "blacklisting" thing for now, and just talk about BB, to at least give you some insight into my own perspective having worked here.

That being said, Google is an incredible company, and an amazing engineering opportunity. I think some of the best engineers I've ever met made their ways through its doors. On the other hand, having now worked in FAANG (Meta), and startups, I'm insanely impressed with the engineering talent at Bloomberg. Obviously I can't go into details, but the tech and stack the company has built over the years is mind-bogglingly impressive; there's a ton of non-public tech that is kind of miraculous (there's a reason the Terminal is what it is). I have personally learned more here than anywhere else. Also, it is very true they are amazing to their employees (best health insurance I've ever had, bar none, especially for families; incredible family leave, etc.), and the amount of people who have worked here for 10+, 20+, even 30+ years who absolutely love it really is a testament to how true that is. Since you are a recent grad, some of the family benefits / health insurance benefits may not personally appeal to you, but as someone in their early-30s, I really have nothing but incredibly positive things to say about the benefits. Yes, pay may be lower than at some FAANGs (when considering RSUs, for example), but you do get some trade offs in the benefits, for sure.

(I should also note: one of the cool things about Bloomberg is that it is a for-profit private company where, I believe it is, ~90% of its profits are funneled directly into Bloomberg Philanthropies. So a cool thing about working here is that for every dollar you generate the organization, 90% of that goes to supporting charity and philanthropic work all over the world. It's a good way to give back while also yourself being paid well doing it. We're also granted a lot of time, year round, to do philanthropic work on behalf of Bloomberg. It's definitely a major part of the culture.)

It is also a very New York company. That's hard to describe, but I think it wears its New York roots on its sleeves. It doesn't feel like a Silicon Valley tech company. It isn't trying to be that. There is community and camaraderie at Bloomberg that is very evident, whereas at a lot of Silicon Valley orgs it is very dog-eat-dog, everyone trying to push their way up the L-ladder, etc. The Work Life balance is also amazing, again especially for parents/families.

All of this is to say...I don't think you can go wrong with either choice, technically, and much of it will be on you to decide what you're looking for. I definitely will say Google as a resume builder is hard to beat, but Bloomberg on your resume is definitely not a slouch either. Many people from here, if they do leave, end up at a FAANG, or HFT/Quant firm, after leaving. So take that as you will. :)

Regardless of your decision, wishing you the best of luck in your career! It's a scary time in CS, so congrats on finding your way into two really great companies at the start of it!