The address on the ad is the same as on this page:
Helog - Kontakt
The ad says:
For various project in different African countries we are looking for
Pilots (min. JAA CHPL-H, Freelance, good English language knowledge)
(Type ratings can be acquired within the company)
Send detailed application documents with CV and such by mail or you can also e-mail to
[email protected]
The ad was in the 4/2008 edition of Rotorblatt, Germans leading (or only?) Helicopter magazine. It came out a week or two ago.