They will both be part of the IT department, reporting to EVP and CFO Jason Monaco as part of the company's newly combined finance, IT and strategy organization.
Marlee Perez said she joins the company as part of its efforts to bring together its technology, data, processes and people to create a solid foundation for sustained growth.
Carmichael joins Kimberly-Clark after spending three decades helping to reposition brands for growth through business turnarounds, acquisitions and scaled platforms.
Church & Dwight is undergoing a portfolio restructuring, divesting its showerhead business while undergoing a strategic review of its vitamin offerings.