I applied online and quickly heard back to complete a coding challenge. The challenge is fairly straightforward and is mainly string manipulation for a portfolio. The downside to this is that it is longer than most coding challenges - it takes up to 3 hours to complete as it is 6 questions. I finished it in 1.5 hours and got 6/6. I didn't hear back for about 6 weeks. Then suddenly I get an email inviting me to a superday for a completely different division called "Business Operations." I had not applied for this division but apparently some people on that team saw my coding challenge and wanted to interview me. So I went and it turned out to basically be the same thing as a software engineering interview. The superday was 4 back to back 30 minute interviews with various people on the BizOps team. I spoke with one machine learning guy (bombed this interview), one guy who was the head of his department, one guy who was working for the second guy, and one guy who was part of another part of the BizOps team. Two-ish weeks later I get contacted by some people from ANOTHER team (Data engineering) saying they want to extend an offer. Apparently their summer analyst program had filled up so they used a third party hiring company to try and hire me as a "contractor." The offer was terrible though and not on par with the salaries paid for other interns. I respectfully declined a week later because i had a better offer. Then the recruiter makes a counter offer that is 60% (in terms of salary) better than the initial offer. Rather than feeling excited I felt cheated because they had low-balled me in the first place. Along with their sketchy interview process and selection, I decided to decline their offer again for a better offer. Definitely one of the weirdest interview experiences I have had, and I left it with a bad taste in my mouth for BlackRock.