Sonni was the national team coach for the men from 2017-2021, and he led the team through two World Championship qualifiers and two European Championship qualifiers.
Sonni var landsliðsvenjari hjá A-landsliðnum hjá monnum frá 2017-2021, og leiddi hann liðið ígjøgnum tvær HM-undankappingar og tvær EM-undankappingar.