  We present a novel framework within the conformal inverse seesaw scheme
allowing large lepton number violation while the neutrino mass formula is still
governed by the low-scale inverse seesaw mechanism. This model includes new
contributions to rare low-energy lepton number violating processes like
neutrinoless double beta decay. We find that the lifetime for this rare process
due to heavy sterile neutrinos can saturate current experimental limits. The
characteristic collider signature of the present conformal inverse seesaw
scheme includes, same-sign dilepton plus two jets and same-sign dilepton plus
four jets. Finally, we comment on the testability of the model at the Large
Hadron Collider since there are new scalars, new fermions and an extra neutral
gauge boson with masses around few 100 GeV to few TeV.
