A common job title for those responsible for building partner relationships in service of hitting company sales targets. They may or may not manage a team.
It’s helpful to understand partners as a part of how a company can choose to scale. The standard way a company does this is to hire talent internally, growing its go to market teams. Alternatively, a company can look to partners, third party entities, to grow its reach, similar to your sales and marketing team without increasing headcount. These partners can be individuals, consultants, or companies. There are many different kinds of partners each of whom provide different types of values, including affiliate partners, referral partners, and reseller partners.