You have my apology - those who asked. Website? I don't know. I'm not looking for a job with Mekong as I already have one.
Would they employ without an endorsement; probably not. Bare endorsement; I don't know.
However for those who would like to, try writing to the Chief Pilot, Mekong Airlines, Hong Kong Centre, SotheAros Blvd, Phnom Penh, Cambodia.
Best of Luck.