Language Experts would need to work on content ranging across topics like Help, Legal, Marketing & UI.
Reading through original material, reviewing it and rewriting it the target language in case needed, ensuring that the meaning of the source text is retained.
Using Translation Memory software to ensure consistency of translation within documents and help efficiency.
Using specialist dictionaries, thesauruses and reference books to find the closest equivalents for terminology and words used.
Using appropriate software for presentation and delivery.