I'm not "professional" in any of these fields, but I've produced a little (very little!) in each of them: I've written some essays on/in Esperanto as well as on/in Swahili:
Mambo hayo yote hayahusu kazi yangu, kwa hiyo mimi si fundi, lakini hata mimi nimetekeleza kitu, yaani nimeandika kuhusu na kwa lugha za Kiesperanto na Kiswahili, kwa mfano: