A product line manager oversees the efforts to increase market share and profitability of products in a company. As a product line manager, you research and study the market to determine fair price points and compare competitor’s products. Other job duties include collaborating with the design, marketing, and sales departments to develop strategies to increase profit margins, monitoring emerging product trends, and forecasting customer demand. To become a product line manager, you need a bachelor’s degree in marketing, business administration, engineering, or a related field, and several years of industry experience.