I have years of experience in ML at Google, FB and a couple other places. My experience is applied research, not just tensorflow/pytorch wrangling. I’m beginning to get tired of big tech and want to see what finance has to offer. My background is probably best matched to quant research/algo development, and I’m mainly interested in Two Sigma, Jane Street and Citadel. Is this a good career move, medium to long term? How does TC growth potential look these days? wlb is not a factor I’m looking to optimize for.
As for TC growth -- yes, the top quant shops can definitely pay what you're looking for and if you're really good, the TC can grow much higher. However, I suspect in your case you might have to take a pay cut at least for the first year or two. You are switching to a new area with no track record and no domain expertise -- those companies might be willing to take a chance on you but since you're looking for 700k+ then I suspect they might not be willing to pay top dollar until you first prove you can deliver.
Part of it is seeing if your skills can transfer (a good "applied researcher" on computer vision is not necessarily going to be good at finding trading signals) but also there are a few cultural differences between FANG and hedge funds and I've seen a huge number of tech people flame out due to cultural mismatch that they weren't willing to adjust to.
So yes, it's definitely possible and if things work out you'll be able to get to the comp you're looking for; so I recommend interviewing if you're interested just to see what happens. But I suspect the offer's bonus may be a "target" rather than a "guarantee" and there's a lot that can go wrong. I suspect you might decide it's not worth the risk. Still, go ahead and interview just to see what happens!