Pre-employment Vetting [Gwangju, South Korea]

I am in need of a reliable and professional individual to conduct pre-employment verification services in Gwangju, South Korea. My project covers the employment verification of up to 2 individuals, so I need a quick turn-around from the chosen freelancer. In order to ensure the utmost care and quality, I would be very appreciative if you could also provide references or samples of previous pre-employment vetting. Thank you for considering my project. The primary task for this project is Employment Verification of the individuals from Sunhan Hospital South Korea.