LinkedIn really depends on your resume/skills and geographical area. In the Bay area, I passively get at least two recruiter reach outs per week and when I was

LinkedIn really depends on your resume/skills and geographical area. In the Bay area, I passively get at least two recruiter reach outs per week and when I was set to actively looking, it was more like several per day. Some of them are highly targeted. For example, I've had a company reach out recently based on previous distributed column store experience. Triplebyte is also pretty good, although it's heavily skewed towards startups. Both of those options are pretty high return on little investment (a few hours).