Complex sentence: He then joined the BBC, originally working for them as a translator, then as a sub-editor in Nairobi, before working in the Science and Technology section of the BBC News website, where he was known for his love of complicated gadgetry.
Split into simpler sentences: He then joined the BBC, originally working for them as a translator, then as a sub-editor in Nairobi. He later worked in the Science and Technology section of the BBC News website, where he was known for his love of complicated gadgetry.