https://jobs.exxonmobil.com/ExxonMobil/job/Houston-PhD-Students-Seeking-Full-Time-TX-77001/927061300/
So it looks like now the company is so desperate for talent that is recruiting for everything+anybody+everywhere.
If your google search brought you to this TheLayoff post, please take the time to scroll down and investigate about this declining company.
There's a reason for such a generic job post: EM has lost so much top talent in the last 3 years that it is now desperate.