The Full form of SDO is Sub Divisional Officer.
The Sub-Divisional Officer is the chief civil officer of the sub-division. One can be appointed in different departments of government like civil, engineering, electricity, water, central public works department (CPWD), Department of posts, MES (Military Engineering Services), etc.
The minimum qualification needed to appear in this exam is Diploma (or equivalent qualification) in relevant discipline of Engineering i.e. Civil, electrical & mechanical. There is a boom in Civil Engineering government jobs and getting a government job is the dream idiolized by most people.
The age limit is between 21 to 30 years (some relaxation is given for SC/ST candidates).
Recruitment is done through the state Staff Selection Commission (SSC).