Bill McDermott joined AXA Equitable Life Insurance as executive vice president of corporate markets. The position is new. Mr. McDermott will focus on developing a suite of retirement products for Fortune 1,000 companies, he said in a telephone interview. Mr. McDermott was executive vice president of large corporate market retirement services at Fidelity Employer Services. A Fidelity spokeswoman wasnt immediately available to discuss whether the position would be filled.