We have around 705 source keys in two projects containing stings in English for an Android Music app and Video app. We use a platform called Localazy for translation, so the strings cannot be sent in an offline format (.docx or .exel), all translations have to be made on that platform itself. The strings need to be translated into Russian.
Please note that the translated content will be proof-read and JUST copy-pasting from Google Translate will not be appreciated and the payment can be withheld.
