Struggling to Join a Mid-Sized Company: How Can I Find Hidden Job Opportunities?

I have been trying to get into a mid-sized company (1,000-5,000 employees). They have a great environment and promote career growth. I have been contacting HR for a very long time, and they are saying they don't have any fresher vacancies at the moment. Is there any way that I could get an opportunity at that company?

Hi, why not gain some experience in small companies related to that industry and then apply for a job with some experience? If you have any known contacts in that company, apply through them, as an employee referral will be given some importance.