After graduating from the Sarajevo comprehensive grammar school in 1919, he began studies at the Faculty of Technology at the University of Belgrade in October of the same year.
In early 1927, he returned to Yugoslavia, where he started working in Ikarus factory in Zemun, Belgrade where all preparations for the production of military aircraft Potez 25 under French license were under way.
[2] At the time, domestic hydroplanes were designed and produced in the Novi Sad-based Ikarus factory for the needs of Yugoslav Royal Air Force (YRAF), so, engineer Milutinovic was transferred to Novi Sad where, together with engineer Josef Mickl (the chief of the construction bureau in ÖFFAG[3] before and during World War I, he worked on hydroplane projects and light sports plane "Sivi Soko" ("Gray Hawk").
Even though it refused serial production of this plane, the Yugoslav Royal Air Force bought the prototype, and gave it to the Reserve Pilots'’ Association, only to place it at Aeroklub’s disposal for use later on.
Right after the liberation of Belgrade in October 1944, he returned to Rogozarski as a technical manager of the company which now organized repair and revision of airplanes for the needs of the Red Army and the Yugoslav air force.
In the WWII post-war period, professor Milutinović continued to construct aircraft; as early as 1946 he took part in the competition opened by Yugoslav air force.
[4] As of 1946, Sima Multinovic dedicated himself completely to working as a lecturer at the Faculty of Mechanical Engineering, where he laid solid foundations for modern studies, thus educating young minds our air force was in great need of.
[6] His further contribution was starting a postgraduate study programme at the Aviation Military Technical Academy in Zarkovo in 1966 as the centre of the Faculty of Mechanical Engineering.
In 1971, he was awarded the title of honorary professor of the University of Belgrade, as one of the most distinguished professors for developing science and studies in mechanical engineering in our country for his immense contribution to developing air force in the country and abroad, his prolific and long work as a researcher in air craft construction, and for his contribution to organizing studies at the Faculty,.
After the war, while he worked at the Faculty, he wrote a university textbook Aviation Construction at the time when such literature was lacking in more developed countries than Yugoslavia.