The Department of Economics and Finance at LUISS has some openings for postdocs

https://economiaefinanza.luiss.it/en/research/research-grants-0

in particular I recall the following:

Scientific Area Mathematics

Mathematical models for the time-space evolution of economic variables

Proff. Sara Biagini / Fausto Gozzi / Giovanni Alessandro Zanco

A notice of competition by way of comparative evaluation is hereby issued for the awarding of 1 research grant at the Department of Economics and Finance of Luiss Guido Carli in the scientific area of Mathematics.

Deadline: October 2, 2019 - 2 p.m. - Central European Summer Time (CET), UTC +2