Complex sentence: Dyson began his career in 1930 as a manager at Price Waterhouse & Company and remained with the company until World War II. After the war, he returned to the business world as the Executive Vice President of Textron.
Split into simpler sentences: Dyson began his career as a manager at Price Waterhouse & Company in 1930. He remined with PW until World War II. After the war, he returned to the business world as the Executive Vice President of Textron.