In 1981, Klein started his career at
Renault as an engineer in the Engine Development Department. In September 2014, his appointment was announced as chief planning officer and member of the executive committee at Nissan, in succession to
Andy Palmer. In November 2019, Nissan announced Klein had left his position at the company as part of broader management team changes following on from the departure of CEO Hiroto Saikawa, who resigned in September 2019 after an internal audit found he and other executives were overpaid as part of a stock-related payment plan. ==References==