Robert Joseph "RJ" Scaringe (born January 19, 1983) is an American entrepreneur and engineer, and the founder and CEO of electric vehicle manufacturer Rivian.

[11] Scaringe received his bachelor's degree in mechanical engineering from Rensselaer Polytechnic Institute.

[14] According to Forbes, Scaringe's net worth was estimated at $3.4 billion as of April 2021, but he lost his billionaire status in March 2022 due to Rivian's declining share value.

[15][16] Scaringe returned to Rockledge, Florida, and founded Mainstream Motors in the year of 2009 as the sole employee.

Additionally, he has veto power over board decisions due to his 100% ownership of the company's class B shares.