The Spanish jury in the trial of Paul Hickey has convicted him of homicide in line with the plea bargain reached earlier by all the parties to the case.
The final decision on sentencing will be at the discretion of the judge.
Both defence and prosecution have asked for a 15 year sentence.
Earlier the court in Spain had heard the Dublin man confess to killing his partner at their holiday home near Alicante three years ago. He has been in custody since then.
31-year-old Paul Hickey, originally from Darndale, was initially charged with murder of Celine Conroy as well as causing her gratuitous suffering, with the prosecution seeking a 20 year sentence.
However, in a plea bargain agreed by all four parties to the case, Mr Hickey instead admitted only to killing her, denying the charge of causing her unnecessary suffering.