If you are in the UK Deepmind seemed to be that way to me when I applied. A lot of research groups doing hard research in a wide array of fields, cutting edge AI stuff, a core team of SEs developing in house programs for researchers, and research engineers for productionization. And no, I didn't get the job lol.
I've heard mixed things about it as a company but GResearch (also UK) seemed like an interesting R&D software / math mix in the vein of investment banking. I applied there over ten years ago so YMMV at this point, who knows.
I've heard mixed things about it as a company but GResearch (also UK) seemed like an interesting R&D software / math mix in the vein of investment banking. I applied there over ten years ago so YMMV at this point, who knows.