As a newly graduate in mech engineering from college,can I get helped to secure an entry level job in boilermaking ?

Hi, you seem very passionate about trains and I think it's great ! I used to believe that a job is a job but my opinion has radically changed since I have developed a passion for Signalling in Railway.

I am not familiar with your Diploma but it seems related to rolling stock (trains and rail vehicles), which constitutes the main activity in Alstom's portfolio. Unfortunately where I work (in Denmark) we only do Signalling and so I am less familiar with Rolling Stock projects but there are multiple sites across the world (like Sweden or Germany for Europe) where you can apply for jobs where I am sure they will appreciate greatly your enthusiasm :) .