British engineering company Rolls-Royce (RR.L) is cutting a few dozen senior management jobs, the latest move by its chief executive to revive a company reeling from low oil prices and a slowdown in aero-engine servicing. CEO Warren East, who took the helm in July, wants to cut the company’s cost base by 150-200 million pounds a year by 2017. Fewer than 50 senior managers at Rolls-Royce, or roughly a quarter of managers at that level, will leave over the coming months, according to the Financial Times newspaper.