hi,

after completing your diploma course you have two options , you have to consider any of it.

1. go for higher study i.e b.tech

2. do job in relevant field.

so in case you do not want to go for higher study you have search for job in relevant field. there is various vacancy comes for diploma in mechanical engineering in railway recruitment, SSC junior engineer, bsnl , ntpc etc.

also you may join MSME skill development course to get better job opportunity.