two pairs of upper linkages, wherein each pair of upper linkages is pivotally connected to a first bracket at a first end, and pivotally connected to a liftgate frame at a second end;

two pairs of lower linkages, wherein each pair of lower linkages is pivotally connected to the first bracket at a third end, and pivotally connected to a lift platform at a fourth end;

one or more upper actuators connected to the liftgate frame at one end and each pair of upper linkages, between the first end and the second end at the other end and configured to move the lift platform in a range from a stowed position underneath the liftgate frame to an engaged position moved away from underneath the liftgate frame by pivoting the two pairs of upper linkages;

one or more lower actuators connected to the first bracket at one end and each pair of lower linkages between the third end and the fourth end at the other end and configured to move the lift platform in the engaged position in a range from a position proximate a vehicle opening to an external surface, by pivoting the two pairs of lower linkages; and

one or more moveable engagement mechanisms configured to secure a post on the first bracket when the lift platform is in at least one of: the stowed position underneath the liftgate frame and the engaged position;

wherein one or more actuators of the one or more upper actuators and the one or more lower actuators are configured to pivot one or more linkages of the two pairs of upper linkages and the two pairs of lower linkages such that the lift platform remains at a set orientation relative to the external surface during movement between the stowed position and the engaged position;

wherein the moveable engagement mechanisms include one or more storage engagement mechanisms that are disposed distal from the vehicle opening and configured to secure the first bracket in the stowed position underneath the liftgate frame and one or more deployment engagement mechanisms that are disposed proximate the vehicle opening and configured to secure the first bracket in the engaged position; and

wherein the one or more storage engagement mechanisms are connected to the liftgate frame at a fifth end, wherein the fifth end of the one or more storage engagement mechanisms is disposed farther away from the vehicle opening than the second end of the each pair of upper linkages.