The conversion of a scientific experiment from the benchtop of a laboratory into a microgravity payload is technically challenging. An understanding of how science and engineering integrate with one another must be appreciated in order to preserve the observation of a scientific phenomenon, whilst working under the heavy technical constraints of a launch platform. Microgravity facilities require experiments to operate autonomously and therefore experiments must operate from limited power such as that provided by DC batteries, with a complete heat management system and often a small computer such as a Raspberry Pi or Teensy microcontroller. We have converted a benchtop experiment that observes the behaviour of a ferrofluid under the influence of an external magnetic field, into a payload for operation in microgravity. The scientific results from the experiment are presented elsewhere, therefore, we present here the technical considerations from a systems engineering perspective, to design and construct a microgravity payload. We present the architecture of the mechanical, power, thermal and data subsystems, systems integration testing and data from the sensors. The MAGIC-II payload flew on board a Pitts Model 12 aircraft from Maitland airfield, West of Newcastle in New South Wales, March 2022. We also present details of the aircraft, the flight profile, and the accompanying accelerometer data from an on board Go Pro. We include a list of considerations for others to follow when developing a payload for flight on board parabolic flights.