Hello aspirant,

As per your your question to get placement in PSU after completing civil engineering you have to qualify GATE exam with very good rank and after that according to the procedure of that particular PSU  you have to go through that all process of placement.

So the first condition is to to qualify with good rank in GATE. So the GATE is Graduate aptitude test in engineering. This is national level exam held by 7 top IITs and IISC Bangalore combinely. For more information about GATE exam you should go through below link in which all information about GATE is given.

https://engineering.careers360.com/articles/gate

So for getting placement in PSU you must have to study hard for GATE exam and get good ranks and then go through the process like interview or group discussion etc. for placement in particular PSU.

Best of luck.