A man has been sentenced to a maximum of 48 years behind bars for murdering his former boss with a pick handle during a 2014 home invasion, in which he attempted to steal up to $20,000 cash.

Key points: Ryan Evans bludgeoned Keith Cini to death with a pick handle

Ryan Evans bludgeoned Keith Cini to death with a pick handle Today, a judge said: "There is no suggestion that the offender is remorseful."

Today, a judge said: "There is no suggestion that the offender is remorseful." Evans will spend a minimum of 36 years behind bars

Ryan Evans bashed pig farmer Keith Cini to death during a robbery at his Badgerys Creek home in 2014.

Evans was also found guilty of a string of charges relating to a separate home invasion in the Southern Highlands in which one man was bashed so badly he suffered permanent brain damage.

Justice Robert Hulme said Evans had shown no remorse. His minimum sentence is 36 years.

The court heard he was a former employee of Mr Cini and targeted his home in the early hours of May 30, 2014 knowing there would be up to $20,000 in a safe inside.

Justice Hulme said the defenceless farmer suffered multiple head injuries and that Evans intended to kill him.

"There is no suggestion that the offender is remorseful," he said.

Keith Cini was murdered at his Badgery's Creek farm. ( Supplied )

The judge said Evans was born in 1988, is of Aboriginal background, had ADHD at school and was expelled in Year 10.

But he said he held down several responsible jobs after that and had been praised for his voluntary work with Aboriginal communities.

"The offender has strong family ties," the judge said.

Justice Holmes noted however Evans used illegal drugs, including ice and had prior convictions for drug and assault offences.

The court heard Mr Cini's partner Luciano Boldi pretended to be dead after she was bashed on the bedroom floor of their Badgerys Creek home.

NSW Police forensic officers begin their investigations at the farm in 2014. ( AAP: Dean Lewins )

Evans also stood trial for Ms Boldi's attempted murder but was found not guilty.

Evans carried out the home invasion with another man who previously pleaded guilty to a range of charges and is serving a minimum jail sentence of 28 years.

Evans did not react when the sentence was handed down.

Outside court family members of the victim said they were pleased with the sentence handed down.

Mr Cinis' daughter Leanne Adams thanked police for their efforts.

"For all the hours they've put in to get us to today, we are very, very grateful," she said.