  We present Very Large Array (VLA) 1.3 cm continuum and 22.2 GHz H$_2$O maser
observations of the high-mass protostellar object IRAS 19035+0641 A. Our
observations unveil an elongated bipolar 1.3 cm continuum structure at scales
$\lesssim500\,$au which, together with a rising in-band spectral index,
strongly suggests that the radio emission toward IRAS 19035+0641 A arises from
an ionized jet. In addition, eight individual water maser spots well aligned
with the jet axis were identified. The Stokes V spectrum of the brightest
H$_2$O maser line ($\sim100\,$Jy) shows a possible Zeeman splitting and is well
represented by the derivatives of two Gaussian components fitted to the Stokes
I profile. The measured $B_{\mathrm{los}}$ are $123\,(\pm27)$ and
$156\,(\pm8)\,$mG, translating to a pre-shock magnetic field of $\approx7\,$mG.
Subsequent observations to confirm the Zeeman splitting showed intense
variability in all the water maser spots, with the brightest maser completely
disappearing. The observed variability in a one-year time scale could be the
result of an accretion event. These findings strengthen our interpretation of
IRAS 19035+0641 A as a high-mass protostar in an early accretion/outflow
evolutionary phase.
