A. Civil Engineering

1. Indian Railway Service of Engineers
2. Central Engineering Service
3. Indian Defense Service of Engineers
4. Indian Railway Stores Service
5. Central Engineering Service (Roads) Group-A
6. Central Water Engineering Service
7. Indian Ordnance Factories Services
8. AEE in P&T building works Group-A Services
9. AEE in Border Road Engg. Services GR-A

B. Mechanical Engineering

1. Indian Railway Service of Mechanical Engineers
2. Indian Railway Stores Service
3. Indian Defense Service of Engineers
4. Central Mechanical & Electrical Engineering Service (Mechanical Post)
5. Central Water Engineering Service Group-A (Mechanical Post)
6. Central Power Engineering Service (Mechanical Post)
7. Indian Ordnance Factories Services
8. Indian Inspection Service Group A
9. Central Engineering Service (Roads) Group-A
10. Indian Supply Service Group A (Mechanical Posts)
11. Assistant Executive Engineer Group A Geological Survey of India
12. Assistant Naval Store Officer Grade-I in Indian Navy
13. Indian Naval Armament Service
14. Assistant Executive Engineer in Corps of EME, Ministry of Defense

C. Electrical Engineering

1. Indian Railway Service of Electrical Engineers
2. Indian Railway Stores Service
3. Indian Defense Service of Engineers(Electrical Posts)
4. Central Mechanical & Electrical Engineering Service (Electrical Post)
5. Central Power Engineering Service (Electrical Post)
6. Indian Ordnance Factories Services
7. Indian Supply Service Group A (Electrical Posts)
8. Assistant Naval Store Officer Grade-I in Indian Navy
9. Indian Naval Armament Service
10. Assistant Executive Engineer in Corps of EME, Ministry of Defense

D. Electronics Engineering

1. Indian Railway Service of Signal Engineers
2. Indian Railway Stores Service
3. Indian Telecom Service Group-A
4. Central Power Engineering Service (E&T Posts)
5. Engineer GCS Group A in WPC/MO(M/O Communication & IT)
6. Indian Inspection Service Group A (E&T Posts)
7. Indian Supply Service Group A (E&T Posts)
8. Indian Ordnance Factories Services
9. Assistant Naval Store Officer Grade-I in Indian Navy
10. Indian Naval Armament Service
11. Assistant Executive Engineer in Corps of EME, Ministry of Defense