Demerson made his top tier debut on 24 May 2009, in Coritiba Foot Ball Club he achieved national recognition in football. Where he captured two State League titles in Campeonato Paranaense (2010,2012) and National Title of Campeonato Brasileiro Série B in 2010. And he reached the incredible Guinness Book record "World's Most Victorious Team" in 2011 totaling twenty-four consecutive wins.
On 22 January 2013, Demerson signed a two-year contract with Bahia.[3] He was an undisputed starter for the club during the 2014 season, he was elected the best defender of the Campeonato Baiano in 2014 season, he captured one State League title in Campeonato Baiano
On 19 February 2015 Demerson moved abroad, after agreeing to a contract with China League One side Jiangxi Liansheng F.C.[4] where he was captain in 2015 season and played in thirty-one matches. On 29 February of the following year he returned to his home country, signing for Paraná,[5] but left the club on 4 May 2016 after being hired by Associação Chapecoense de Futebol.[6]