The salary package of B.Tech in Mechanical Engineering candidates vary according to the organisation. Small and medium private sector firms hire mechanical engineers to various job prospects with remunerations starting from Rs.15000/- to 20000/- per month.dvertisements. Mechanical Engineering is one of the highly demanded fields of engineering which deals with the principles of physics and material science for the design, construction and maintenance of mechanical systems. The job opportunities for a mechanical engineer are very vast.