Rivian's RJ Scargine Assumes Expanded Role: Rivian Automotive, Inc. RIVN said in a filing that CEO RJ Scaringe will assume direct responsibility of all product functions, including software, autonomy, design, vehicle, electrical, propulsion and programs. The chief product officer, Nick Kalayjian, will move to the role of EVP, Vehicle Engineering & Propulsion, and will continue to report to the CEO. The development assumes importance as the company is revving up efforts to develop its R2 lineup of affordable EVs based on a different platform.