Hill, who at Shell oversaw the world's largest LNG trading business, joins Geneva-based Mercuria as owners Marco Dunand and Daniel Jaeggi look to acquire talent to build on two years of bumper profits.
A spokesperson declined to comment.
The sources declined to be named because they were not authorised to speak publicly.
Mercuria also hired banker Nick O'Kane from Macquarie. He is due to start later this year.
(Reporting by Aizhu Chen in Singapore, Julia Payne in Brussels, and Dmitry Zhdannikov in London; additional reporting by Deep Vakil in Bengaluru; editing by Barbara Lewis)
