You will draw up/update your test cases yourself based on specifications and make preparations to be able to carry out your test cases correctly and completely.
Reviewing the requirements supplied by the customer for completeness, correctness and clarity (reviews).
Apply black box test design techniques (EP/BVA/Decision Table/State Transition/Use Case).
Select and prioritize test cases that qualify for automation and/or regression.
Test execution
You ensure correct application of the test plan.
Create test log, including Pass/Fail result.
Create Defects, with sufficient test evidence, discuss with developers.
Exploratory testing with inside information.
Automate testing processes with approved tooling.
Test Report
Analysis of the test results and associated communication.