The RF Engineering group at the Institute of High Performance Computing (IHPC), develops advanced computational electromagnetics and multiphysics algorithms and tools, leveraging vast know-how in EMC for a wide range of applications. Typical challenges include electrically-large and multi-scale EM problems such as antenna placement on large platforms, and mutiphysics problems such as the electrical –thermal–mechanical analysis of composite materials. In a project that dealt with electrically large platforms, an efficient modelling tool was required to identify optimum antenna positions and minimize interference between various antennas. FEKO was used during the development process, helping to determine the design parameters of the surrogate models using its powerful optimization function.