With Rethink, I'm currently mostly working on nuclear risk research. I might in future work on topics related to what I'm calling "Politics, Policy, and Security from a Broad Longtermist Perspective".
I also post to LessWrong sometimes.
If you think you or I could benefit from us talking, feel free to message me or schedule a call. For people interested in doing EA-related research/writing, testing their fit for that, "getting up to speed" on EA/longtermist topics, or writing for the Forum, I also recommend this post.