Is Crimson Education hiring for real?

Has anyone here interacted with the recruitment team at Crimson Education? They appear to be expanding rapidly. I found it a bit odd when I received a LinkedIn message from their “COO” inquiring if I was interested in a position. Do you think it’s strange for the COO of such a “fast-growing edtech company” to reach out to individuals directly? I’ve noticed they have multiple recruiters on LinkedIn as well. Maybe I’m overthinking this, but it raises a few red flags for me. What do you all think? Any personal experiences to share?