How can I get hired at FM Global as a recent grad?

Apply! You're in demand. Don't be overly worried about which specialty is open, take the job because the company is great at moving people around the organization and this results in eventually landing where you wanted to be or landing somewhere that you never knew you wanted to be, but do now. Moving around the company makes you very valuable, it crams your head with the knowledge needed to keep separate departments in synergy. IT has their own language, Underwriting has theirs, engineering, research, etc. Move between these areas and your holistic knowledge will be in demand. Plus, you'll become connected with and trusted by so many people who will learn they can ask you almost anything and become a candidate for your favorite job or a management position if that's your aspiration.