Complex sentence: On the professional front, he enrolled for the fast-track on-the-job teacher training scheme that had been introduced to address the acute labour shortage affecting the schools sector, after which he worked as a primary school teacher in the village of Obersteina.
Split into simpler sentences: On the professional front, he enrolled for the fast-track on-the-job teacher training scheme that had been introduced to address the acute labour shortage affecting the schools sector. After this he worked as a primary school teacher in the village of Obersteina.