If SOMAIA in the question is a typo error that really spells SOMALIA, then, the first president of Somalia was Aden Abdullah Osman Daar.
He was popularly known as Aden Adde and he took office on 1st July 1960 and left on 10th June 1967. He served for a total of 6 years and 344 days. He was under the political party of Somali Youth League.