Hi

HPCL has given a official adveristment but the link is not yet activated it will be made avilable in few days , please keep checking the link 

http://hindustanpetroleum.com/hpcareers/current_openings

https://hindustanpetroleum.com/hpcareers/documents/careers_pdf/HPCL%20GATE%202019%20Advertisment.pdf

IOCL has given advertisement for recurting engineers based on GATE 2019. But the link is not yet active on their official website. It will be made available soon kindly check there website regularly.

Https://www.iocl.com/download/Detailed-Advertisement-Open-Recruitment-through-GATE-%202019.pdf