Many postdocs are academic staff working at a university or research institution. Their salary is not generous, but much better than that of doctoral students.
Software developers work in almost all industries. Modern information technology is used everywhere from business and administration to social and artistic fields. Due to the wide range of applications, software developers are in demand and are well paid.
Dentistry is generally considered to be a crisis-proof industry with a future. Many prospective dentists choose the career due to the secure livelihood and an above-average salary, although ongoing changes to the operation of practices do have an impact.