The Pakistan management under PCB chairman Najam Sethi has undergone a major revamp after the side failed to qualify for the semi-finals of the World T20 in Bangladesh this year.
The South African-born Luden's appointment comes after the hiring of head coach Waqar Younis, spin consultant Mushtaq Ahmed and batting coach Grant Flower.
"Grant Luden has signed up with PCB as training/fielding coach," Sethi said.
According to the Express Tribune, the PCB had decided to hire a fielding coach who could also double up as a trainer, which made Luden the favourite candidate.