The placement records for Civil Engineering in NIT Jamshedpur are not considered to be the best. 

• One of the primary reasons behind this is the lesser number of companies actually approaching any Civil Engineers at the end of the day. 
• Nearly 60% of the students who are pursuing civil engineering get placed. At the same time, the opportunities that other branches receive regarding their placements can be heightened up to 90%.
• Most of the civil engineers approach in opting for GATE preparations and later in their lives, go up to securing government jobs. 
• There are students who primarily did not take Civil engineering in their years of study and instead chose to opt for Metallurgy in the same institute they are in.

Civil engineering has an average placement of almost 60-70% in most of the NITs. It is somewhat similar in NIT Jamshedpur too since overall, it is not deeply bad. But, at the same time, it is not particularly good as well. Your placement also partially depends on your CGPA too. 

L&T alone visits the campus of NIT Jamshedpur every single year and selects 15 -20 students in an approximate count. So you have several other options open for you via GATE OR IES.