In 1922 he joined the newly founded Rīgas FK which later became the dominant Latvian football club of the 1920s-30s.
In RFK Šeibelis for a long time had to play with the reserves squad, however in 1925 he made his debut with the Latvia national football team which was looking to include more young players.
In the decisive match against Estonia, he organized the winning goal and was injured by a frustrated Estonian forward who could not go past Šeibelis.
In 1936 when Latvia won another Baltic Cup, Šeibelis scored a winning goal against Lithuania in the last minute.
After the Second World War Šeibelis lived in the United States, coached a football club in Minneapolis.