We present a method for generating ultrashort pulses of predetermined arbitrary shape at the distal end of a single mode step index fibre. The relevant properties of the fibre—dispersion, birefringence, and onset of non-linearities—are analyzed and included in the shaping procedure. The capabilities of the method are demonstrated with parametrically shaped sub-pulse sequences. In these sequences, each sub-pulse is independently controlled respective to its parameter energy, distance in time, phase, chirp, and state of polarization including orientation, ellipticity, and helicity. The availability of shaped femtosecond laser pulses via optical fibres will promote their application in endoscopy.