Career
He competed at the 1908 Summer Olympics in London. In the 100 metres event, Schönecker took fourth place in his first round heat and did not advance to the semifinals. He placed third in his preliminary heat of the 200 metres competition to be eliminated from that event as well.
He is also well known for building sport stadiums.
He designed the Stadium Pfarrwiese, which was the home of Rapid Wien until 1981. And he was responsible for the construction of the Hohe Warte Stadium, which is the home of Austrias oldest football club First Vienna Football Club. This stadium was the biggest in Europe at this time and is still in use.