Vallianos played for Panionios as the successor to Nikos Pentzaropoulos, until 1959 when he transferred to Ethnikos Piraeus, replacing the great Stathis Mantalozis. He played for the Piraeus club until 1967 when he trasferred to Olympiakos. His career at Olympiakos was short-lived however, as the Secretary General of Sport, Costas Aslanidis, released his name in 1967 as one who had taken bribes to throw games. Vallianos denied the charges, claiming the payment in question was made to him as a bonus for having played well but Olympiakos released him. He was capped 11 times by the Greek National Football Team.