Dear as u have mentioned a few things like laidback job, perks, high salary and posting in islamabad etc, i suggest u following occupational groups:

1. FSP
Great salary abroad with perks. No political pressure or depression...
In Pak, FSP officers are posted in Islamabad. Some far off stations in 3rd world have to be endured but again u will live in capitals. Even 3rd world capitals are beautiful like nairobi etc. Check them out on internet.

Many ppl leave dmg and psp. No 1 leaves FSP.

Those who mention negative points of FSP postings dont know the reality of FSP vs services in Pak. In services in Pak, u will spend most of your life in hard areas if u are in PAS or PSP.

2. Military lands and cantonements
Peaceful life with postings in cantonements that are most beautiful parts of Pak. U will have houses comprising in acres, believe me posh residence with servants and a car and perks of military. U will also exercise power and an office job with peaceful environment. However, promotions are slow.

3. Customs
U will get posting in big cities. The job is hectic though.

4. IRS
U can spend your entire life in home district. Job is not very tough. Salary is good.

5. OMG : U will remain in Islamabad. Job is hectic in secratariat.

6. Trade and Commerce.
U can easily get posting in your city and there will be a lot of foreign trainings and postings as commercial attaches in all embassies of Pak abroad.

7. PAAS 8. Railways 9. Information