Rubik was born in Austria-Hungary (modern day Slovakia).

[1] The war orphan enrolled in the Technical University of Budapest in 1929, studying mechanical engineering.

[1] During the 1930s, he designed several gliders for manufacture by Műegyetemi Sportrepülő Egyesület, the sport flying association of the Budapest Technical University.

[2] These were manufactured by his own enterprise, Aero-Ever in Esztergom, until the firm was nationalised in 1948 as Sportárutermelő Vállalat.

[1] One of his most famous aircraft is the R-26 Góbé, a popular training glider in Hungary.