Is Crimson Education a legitimate option for job seekers?

I’m curious if anyone has had any experience with their recruitment process. They appear to be expanding rapidly, but I found it unusual that I received a message on LinkedIn from their “COO” inquiring about my interest in a position. Does anyone else think it’s odd for the COO of a “fast-growing edtech company” to be reaching out directly? I’ve noticed they have multiple recruiters on LinkedIn as well. I might be overthinking it, but it raises some red flags for me. What are your thoughts or experiences?