In 1959 he moved to Faema-Molteni under Rik Van Looy, winning the national road championship, a feat he repeated in 1960 and 1961.

In 1962 he switched to Wiel’s-Groene Leeuw with 1963 world champion Benoni Beheyt of Belgium.

In 1964 he won six-day races at Essen, Cologne and Frankfurt, riding with specialists Peter Post and Rudi Altig.

[5][6] After retirement in 1973 Junkermann coached young riders for 25 years, first with the RSV City Neuwied cycling team and between 1984 and 1998 with Olympia Dortmund.

At Dortmund, he brought Erik Zabel, Udo Bolts, Rolf Aldag, Kai Hundertmarck and Bernd Groene through the ranks to become professionals.