Yes. The same professional category, transitaire and commissionnaire en douane agree, handles both import and export clearance in Cameroon; the licences and the underlying skill set are the same whether goods are entering or leaving the country, and most established firms in this sector actively promote both services. This matters directly for anyone planning to grow beyond pure importing: if your business later re-exports goods, for example through the bonded transit arrangements that move cargo onward to landlocked neighbours such as Chad or the Central African Republic, or if you begin exporting Cameroonian products, the same agent relationship you built for imports can very often manage that export leg as well.
In practice, choosing an agent with demonstrated strength on both sides from the start is worth favouring over one that only ever mentions imports, even if your current plans are import-only, since it gives you room to grow the relationship rather than needing to build a second one from scratch later.