Finals19,
Obviously this job would not be for everyone. Plus, your pilot base better be located in a "safer" city than in a known, dangerous place. Otherwise, just expect locals to apply who don't mind the corruption, danger and difficult living conditions in certain cities.
That said, if reasonably safe accomodations were secured and possibly included in the package, I could see how this could be a good first job for the scads of Europeans who either work 3 jobs or bleed their parents' bank accounts to get their ratings up through the Airbus type. That assumes FastJet hires experienced left seaters who can provide wisdom for operating in very challenging weather and infrastructure/language conditions. Yes, I have several friends from various parts of Africa and I am aware of the rough conditions in certain parts.
If I were younger, single (I now have a young family) and Airbus typed, I'd probably apply for a job at FastJet to do for a few years. Spending say 3 years flying around Africa would be both eye-opening from a cultural standpoint and probably a great learning experience from a flying standpoint. Again, assuming it was run as a safe operation, I would be attracted to the opportunity to fly around the vast African continent (despite the corruption, poor infrastructure and language differences). That's just me. And why not? It is probably correct to characterize Africa as the "last frontier" and you can always later get a job flying at EasyJet, Monarch or Norwegian (100 737NGs + 100 Neos on the way) and fly among the European hubs and onward to the Spanish/Greek/Turkish resort cities. That flying is great - but African flying would probably offer many more diverse experiences that you could apply later in your career. You never know...
If I were a little younger, single, typed and able, I would look at it as more of an adventure and possibly a great aviation learning experience. Hope it turns out that way and they get some good applicants!!!!