Diploma holders in aeronautical engineering can find some of the highest salaries in specialized positions. Avionics technicians, quality control inspectors, and aircraft maintenance supervisors generally command higher pay due to the specialized skills and experience required. Positions in well-established companies, particularly in private MRO firms and large aerospace corporations, often offer competitive pay and benefits. Pursuing certifications or additional training in these areas can further increase earning potential, making these roles attractive for those looking for higher salaries in the field.