now you have completed your diploma in computer engineering, a higher degree will always be beneficial for your promotions in your work field. Now days getting an engineering degree is not a big task. There are numerous colleges that provide distance engineering courses in Hyderabad some of them are
1. College of Engineering, Osmania University, Hyderabad
2. JNTU College of Engineering, Kukatpally Hyderabad
3. University of Hyderabad, Gachi Bowli, Hyderabad
4. BITS, Hyderabad.
5. Malla reddy college of engineering.
but due to some reasons distance education of technical and skilled courses is not approved by UGC.
In my opinion, because you are working in a government institution you should go for an AMIE certicicate.
The full form of AMIE is "Associate Member of the Institution of Engineers". AMIE is a professional certification given by the Institution of Engineers (India).
The Indian Ministry of Human Resource Development considers this AMIE qualification equivalent to a degree in engineering. The qualification can be earned by passing the Section A, Project Work, and Section B examinations of the Institution. If you pass both sections of the examination, you become an Associate Member of the Institution of Engineers. AMIE is equivalent to B Tech. However, it is continuing education. It means that AMIE should be pursued by working aspirants engaged in the engineering field