"I just feel it's going to be an excellent year ahead!" eastern suburbs personal trainer Dean Kaplan wrote on Facebook.

Two months later, the Emanuel School "weights and fitness director" was in custody, facing four charges related to child exploitation material.

Personal trainer Dean Kaplan is accused of uploading and accessing child exploitation materials. Credit:Facebook

A tip-off from the United States National Centre for Missing and Exploited Children about a Sydneysider allegedly uploading images of child abuse led the Australian Federal Police to Mr Kaplan's Kensington apartment last month.

Officers seized phones, laptops and digital storage items from the unit, and Mr Kaplan was taken to the Surry Hills police station.