It is most appropriate to use in-house job recruitment instead of having an outside contractor help with recruiting for high-level executive jobs with very precise job requirements.
In-house recruitment can leverage the organization's deep understanding of its culture, values, and specific needs, which is especially critical when seeking high-level executives who need to fit seamlessly into the company's leadership structure. Moreover, in-house teams often have established relationships with internal stakeholders, which can help in assessing whether a candidate truly aligns with the organization's needs and vision.
In contrast, using outside contractors can be more beneficial for other scenarios like hiring for temporary positions, entry-level roles, or when there’s a strong directive to promote from within.