Yes, LinkedIn is one of the most useful websites to look for a job.
First of all, you may apply for the existing requisitions directly; After several years of working experience, upon your regular update on your profiles, it is very likely that job hunters or other companies' HR may reach out to you; Also, it is quite helpful if you get connected/acquaintant to the target company employees (alumni, former colleagues etc.) and could easily get internal referrals.
Btw, there are some other useful websites, such as SlideShare, Glassdoor etc. that you can find related information when searching for job.
#career #career-choice #job-search