Selenium testing is a growing field due to its open-source nature and the demand for web application automation, with job opportunities expected to increase significantly. While knowledge of Selenium is crucial, additional skills and experience in programming languages and testing methodologies are important for employment. Average salaries for Selenium testers vary greatly depending on experience and location, ranging from approximately $70,000 to over $120,000 in the U.S., and similarly varying salaries in India.