  We report the discovery and confirmation of the planetary system TOI-1288.
This late G dwarf harbours two planets: TOI-1288 b and TOI-1288 c. We combine
TESS space-borne and ground-based transit photometry with HARPS-N and HIRES
high-precision Doppler measurements, which we use to constrain the masses of
both planets in the system and the radius of planet b. TOI-1288~b has a period
of $2.699835^{+0.000004}_{-0.000003}$ d, a radius of $5.24 \pm 0.09$
R$_\oplus$, and a mass of $42 \pm 3$ M$_\oplus$, making this planet a hot
transiting super-Neptune situated right in the Neptunian desert. This desert
refers to a paucity of Neptune-sized planets on short period orbits. Our
2.4-year-long Doppler monitoring of TOI-1288 revealed the presence of a
Saturn-mass planet on a moderately eccentric orbit ($0.13^{+0.07}_{-0.09}$)
with a minimum mass of $84 \pm 7$ M$_\oplus$ and a period of $443^{+11}_{-13}$
d. The 5 sectors worth of TESS data do not cover our expected mid-transit time
for TOI-1288 c, and we do not detect a transit for this planet in these
sectors.
