As the description inside the image describes, This is intended to be a Gallente Destroyer. Just as the Vexor is a small version of the Dominix, the Janus is a smaller version of the Brutix.
The Janus is much like the catalyst, but with fewer weapons, slightly faster, and has a slightly smaller signature radius. The intent is a Destroyer that can still be effective against frigates and drones, but can survive against larger ships a bit better than the catalyst can.
EDIT: added the directional indicators: "Bow", "Stern, etc. Just in case.