Prior to joining Milliman, Clark worked at Wilton Re as their first in-house pricing actuary. His other reinsurance-company experience includes: senior vice president and actuary and one of the founding members at Scottish Re in charge of life reinsurance pricing; product consultant at Transamerica Reinsurance’s product consulting and development department, and appointed actuary and pricing actuary at the Reassurance Company of Hannover.

Clark's direct company experience includes working at Royal Maccabees in Michigan as the director of life product management, overseeing product development for individual universal life, worksite universal life, term life, and working with the company's disability income product line. Other direct company experience includes pricing disability income and whole life products at National Life of Vermont and pricing deferred annuities at Federal Home Life in Orlando.