Worked on suffering-focused ethics → author of Minimalist Axiologies: Alternatives to ‘Good Minus Bad’ Views of Value. You can also read it on the forum here.
I have MA and BA degrees in psychology, with minors in mathematics, cognitive science, statistics, computer science, and analytic philosophy.
Relevant recent posts:
https://www.simonknutsson.com/undisturbedness-as-the-hedonic-ceiling/
https://centerforreducingsuffering.org/phenomenological-argument/
(I think these unpack a view I share, better than I have.)
Edit: For tranquilist and Epicurean takes, I also like Gloor (2017, sec. 2.1) and Sherman (2017, pp. 103–107), respectively.