A Selenium tester has several roles and responsibilities. Roles can differ according to organization and projects. Some of them I am mentioning below: -
They need to understand the business requirements, application and its components.
They need to updating Framework functions when required and developed, executed the Automation Test Scripts.
Selenium testers need to reviewing the test Reports and Preparing test Summary Report.
They need to prepare test scenarios/cases/execution and test results.
Testers need to find if there any defects / Observation on day to day basis.
Attending the client calls and meetings
They need to be involved in giving daily and weekly status reports to clients.
If you are looking to work as a Selenium tester then do enrol in the following Selenium Training Course. This course will give you a vast knowledge of Selenium framework and all the concepts required to become a Selenium Tester with a most valuable certificate which is accepted everywhere. If you like to read the stuff then you must read the following Selenium Tutorial. I am also mentioning a video tutorial on Selenium for your reference. .