He served as a member of the editorial board of the CLP, in charge of production of the party's Russian-language "underground" (secret and illegal) newspaper and pamphlets.
Jakira briefly served on the governing Central Executive Committee of the UCP in June 1921, resigning due to "family matters" resulting from his need to regularly commute from Philadelphia to party headquarters in New York City.
In the six month interval which followed, the secret organization's size and influence withered, while the WPA, fueled particularly by an influx of new blood from the Finnish Socialist Federation, grew dramatically.
Called by one of his contemporaries "modest and friendly," Jakira was a factional loyalist to Workers (Communist) Party leaders Ruthenberg and Jay Lovestone in the middle 1920s.
He remained in that post for at least a year before taking on a similar role in Western Pennsylvania as DO of the Pittsburgh district, a position which he retained through the end of the decade.
[1] Thereafter, Jakira was named Assistant Secretary of the International Labor Defense, a mass organization initiated, financed, and controlled by the Communist Party.