The 17-year old joined Toby Stevenson at the Essex based club and netted in the 26th minute to put his side 2-0 ahead.
Both Sotiriou and Stevenson played the full 90 minutes for Heybridge Swifts on New Year’s Day, when the Swifts comfortably saw off promotion rivals Bowers and Pitsea 2-0.
Meanwhile Aron Pollock’s Leatherhead defeated Harrow Borough 2-1 on the 30th December, before a clean sheet during a 2-0 New Year’s Day victory at home to Tooting & Mitcham ensured the defender got off to a positive start at his new club.
Fellow central defender Michael Clark also played the full 90 minutes in both fixtures over the Christmas period, winning 4-2 at home to Whitehawk before being narrowly defeated whilst playing hosts to Concord Rangers.
Youngster Teddy Perkins helped Romford register two successive away victories at Cheshunt and Grays Athletic the first of which was their first league win since August 2017.
Midfielder Charley Barker was involved in Wingate & Finchley’s win over Finchley on New Year’s Day after playing 65 minutes in his first appearance at The Maurice Rebak Stadium.