Typographer - amending fonts for additional languages

We're currently looking for a skilled typographer that can take an existing font and add alphabetic sets in various languages. This may simply be the case of adding graves, umlauts, cedillas etc to western fonts where these are not supported but may also include more in-depth work to add a completely new extended ascii charater set such as Greek, Thai, Russian etc. We'd welcome proposals from anybody worldwide - realising that this is a very specialised role. Please get in touch with a CV and an hourly/daily rate as well as a rough idea of how long it'd generally take to add extended charaters and full languages.