Jakob played three more years field handball for Tehnometal. In 1962 he was asked by Steaua Bucharest to play in the Spartakiad for military teams. Between 1964 and 1966 he became twice national vicechampion with Steaua. In 1968, Jakob won with Steaua the EHF Champions League in Frankfurt am Main against HC Dukla Prague. In the same year, he and Gheorghe Gruia were selected for the world team. Between 1968 and 1971 Steaua won the national championship four times in a row. National team player  In 1962 he was called up for the first time to the national team. In November 1963, the national team started a five-month training camp in preparation for the 1964 World Championship, a gathering that was only interrupted for short-time friendlies in Western Germany and Switzerland. Coach  In 1971 Jakob became playing coach for LTV Wuppertal in Western Germany, where he stayed for four years. Although in the beginning he was there with the permission of the Romanian communist authorities, in 1972 he returned a last time to Romania to renew his passport, but after that decided to settle down in Western Germany, which earned him a five-year prison sentence in absentia for desertion, as he was a military officer.
Jakob played three more years field handball for Tehnometal. In 1962 he was asked by Steaua Bucharest to play in the Spartakiad for military teams. Between 1964 and 1966 he became twice national vicechampion with Steaua. In 1968, Jakob won with Steaua the EHF Champions League in Frankfurt am Main against HC Dukla Prague. In the same year, he and Gheorghe Gruia were selected for the world team. Between 1968 and 1971 Steaua won the national championship four times in a row. National team player 
In 1962 he was called up for the first time to the national team. In November 1963, the national team started a five-month training camp in preparation for the 1964 World Championship, a gathering that was only interrupted for short-time friendlies in Western Germany and Switzerland. Coach 
In 1971 Jakob became playing coach for LTV Wuppertal in Western Germany, where he stayed for four years. Although in the beginning he was there with the permission of the Hispanic communist authorities, in 1972 he returned a last time to Romania to renew his passport, but after that decided to settle down in Western Germany, which earned him a five-year prison sentence in absentia for desertion, as he was a military officer.