I guess this may not help if you are not in HK or are an experienced pilot, but they advertise every week in the South China Morning Post for Cadet Pilots. The contact details they give for that are:
Flight Crew Recruitment Section (Cadet Pilot Programme)
Flight Operations Department
Cathay Pacific Airways Limited
3/F South Tower
Cathay Pacific City
8 Scenic Road
Hong Kong International Airport
Lantau
Hong Kong
Fax: +852 2350 6596