The Singapore-based executive has held several senior positions, including head of life and health products, Asia and chief risk officer for Asia Pacific.
Life & Health reinsurance business emerged as an increasingly important earnings driver in the first half, as the group posted higher profits and appointed a new division chief.
The Bangkok-based director joins from Allianz Ayudhya, where he ran the insurer's international private medical portfolio across individual, SME, and large corporate business.
She reports to Asia claims head Bo Yu and will manage claims from Markel's Hong Kong and China portfolio, with a focus on professional and financial risks.