Prospective PhD students
I currently advise students through either Mathematics or Computer Science (Courant Institute of Mathematical Sciences). Check out the respective programs and apply to whichever fits better with your profile. Admissions are made at the department level by appointed committees.
Prospective PostDocs
If you are interested in a PostDoc position in my group, then send me an email describing your research interests and attach a CV with a publication list and apply via Interfolio:
https://apply.interfolio.com/156282. There are also open
Faculty Fellow positions and
Courant Instructor positions.