Account executive duties may include: Negotiating with clients and closing contracts. Attending to clients' needs and developing relationships. Acquiring more clients through prospecting and canvassing.Account executive duties may include: Negotiating with clients and closing contracts. Attending to clients' needs and developing relationships. Acquiring more clients through prospecting and canvassing.Account executive duties may include: Negotiating with clients and closing contracts. Attending to clients' needs and developing relationships. Acquiring more clients through prospecting and canvassing.