Positions for electrical engineer in industry? Which is the best?

like  maintaince  engineer,etc...

@Mandar - Not sure how to answer your question correctly, because the positions can be named anything, depending upon the role. So you could have -

1. Maintenance engineer
2. Associate electrical engineer
3. Product development engineer
4. Field Engineer
5. Systems engineer
6. Algorithms engineer
7. Assistant engineer
8. Senior Engineer
9. Junior Engineer
10. Proposal Engineer
11. Hardware Design Engineer
12. Security Engineer
13. Technician Engineer
14. Applications engineer
15. Project manager
16. Electrical Power Engineer
17. Controls Engineer
18. Electrical Estimator
19. Lov-Voltage / High Voltage Engineer
20. Instrumentation Engineer

...and so on.

Frankly speaking, it's impossible to compare these positions; because there is no common ground. If you tell us what parameters you wish to have for comparing them, someone could make a recommendation about the best position.