posting for a future career

Hey everyone, recently accepted a post graduation role at a fantastic asset management company. However, they haven’t sent out anything for me to post or announce. But I’ve looked at other workers profiles, and I’m not sure I’ve ever seen anyone announce anything. It seems to be lowkey.

I am not a huge fan of showboating on LinkedIn, but I am tired of people asking me if I have a job lined up.

LinkedIn won’t allow me to add a job to my profile under a future date.

What should I do to lowkey add it to my profile?