Stephenson joins the firm as an external business development manager.
Prior to joining Octane Capital, Stephenson worked as a BDM at Castle Trust, and has also spent time at Borro.
Hall joins as an internal BDM and was previously at MT Finance where she worked as a senior case manager.
Mark Posniak, managing director at Octane Capital, said: “We have set ambitious targets for 2021 and Hattie and Mark will play an important role in helping us to achieve them.
“Both have exceptional track records and have already hit the ground running, adding value to the team from day one.
“Though 2021 could be an eventful year as the economic impact of the pandemic starts to feed through, it will bring no end of opportunities for property investors and we are expecting to be very busy as a result.
“The team we now have means we can put the pedal to the floor and at the same time maintain the very highest service levels that our introducers are used to.”