Jamie Lee Warn denies the murder of Zsuzsanna Besenyei on or before 16 May 2018.
Mr Warn, who is from St Helier, also maintains his innocence on two charges of perverting the course of justice by giving false statements to police officers.
Miss Besenyei’s body was discovered at La Pulec bay, two days after her car had been found at La Haule slip, in St Brelade.
The 37-year-old had been missing for six days when her body was found.
The two counts of criminally perverting the course of justice relate to the defendant allegedly ‘knowingly and voluntarily giving false information to the States of Jersey Police investigating the alleged commission of the murder’, the court heard.
The first charge stems from a statement given to police on 15 May in St Helier and the second on 23 May in St Brelade.
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A jury of six women and six men has been selected to hear the trial, which is scheduled to last two weeks, with Deputy Bailiff Tim Le Cocq presiding.
After the jurors were sworn in yesterday, they were released for the day and Crown Advocate Simon Thomas, prosecuting, is expected to open the case for the Crown this morning.
The prosecution are expected to call 24 witnesses including police officers and experts.
Mr Warn is represented by Advocate James Bell.
The defendant has been in police custody since last May.
