How can I find out who is the hiring manager or lead recruiter on this posting?

Typically, the job posting should include the contact information of the hiring manager or lead recruiter, such as their name and email address. If this information is not provided, you can try to research the company on LinkedIn or other professional networking sites to see if you can identify the hiring manager or lead recruiter for the position. You can also try reaching out to the company’s HR department or general contact email address provided on their website to inquire about the hiring manager or lead recruiter for the position.