  We report the identification of 15 galaxy candidates at $z\ge9$ using the
initial COSMOS-Web JWST observations over 77 arcmin$^2$ through four NIRCam
filters (F115W, F150W, F277W, F444W) with an overlap with MIRI (F770W) of 8.7
arcmin$^2$. We fit the sample using several publicly-available SED fitting and
photometric redshift codes and determine their redshifts between $z=9.3$ and
$z=10.9$ ($\langle z\rangle=10.0$), UV-magnitudes between M$_{\rm UV}$ =
$-$21.2 and $-$19.5 (with $\langle $M$_{\rm UV}\rangle=-20.2$) and rest-frame
UV slopes ($\langle \beta\rangle=-2.4$). These galaxies are, on average, more
luminous than most $z\ge9$ candidates discovered by JWST so far in the
literature, while exhibiting similar blue colors in their rest-frame UV. The
rest-frame UV slopes derived from SED-fitting are blue ($\beta\sim$[$-$2.0,
$-$2.7]) without reaching extremely blue values as reported in other recent
studies at these redshifts. The blue color is consistent with models that
suggest the underlying stellar population is not yet fully enriched in metals
like similarly luminous galaxies in the lower redshift Universe. The derived
stellar masses with $\langle \log_{\rm 10}
($M$_\star/$M$_\odot)\rangle\approx8-9$ are not in tension with the standard
$\Lambda$CDM model and our measurement of the volume density of such UV
luminous galaxies aligns well with previously measured values presented in the
literature at $z\sim9-10$. Our sample of galaxies, although compact, are
significantly resolved.
