I have worked as one of the officers for the AMS Graduate Student Chapter at Texas A&M for multiple years. We organize several events throughout the semester. Check out our website for information about events and resources for current graduate students. As an AMS officer, I was a co-organizer of the The Gathering in Graduate Expository Mathematics (aka GIG'EM) conference in 2022. Here's the conference website.
I have served multiple times as a mentor for the Directed Reading Program for Undergraduate students at Texas A&M. You can see more details here.
I have also worked as an instructor and volunteer for TAMU Math Circle for multiple years.