VSO looks for qualified and experienced men and women to work alongside people in developing countries, passing on their skills.  Postings are usually for an initial two year period.  
People of any nationality are now eligible to apply through the recruitment centres in the UK, the Netherlands, Canada and Portugal.  VSO has recently changed its policy so that even those without the right of re-entry to the UK can apply.  
Applicants can be selected for interview from anywhere in the world.  Travel expenses are negotiable.  
 
See the website: www.vso.org.uk or in the UK phone   020 8 780 7500.