Test Planning & Design: Write and review test cases, create test scenarios, and develop test plans to ensure that all software features and functionalities are thoroughly tested.

Test Execution: Manually execute test cases on different software modules, systems, and applications across different platforms.

Defect Identification & Reporting: Identify bugs, defects, or inconsistencies, and document them in a bug-tracking tool (e.g., Jira, Bugzilla).

Regression Testing: Perform repeated testing of new releases and patches to ensure that existing functionalities are not impacted by the changes.

Cross-Functional Collaboration: Work closely with developers, business analysts, and product managers to understand requirements and provide feedback.

Ad-Hoc Testing: Conduct exploratory testing where the tester investigates the application in an unscripted manner to uncover any unexpected issues.

Test Documentation: Maintain detailed documentation of testing results, defect logs, and test reports.

User Acceptance Testing (UAT): Collaborate with stakeholders to verify if the system meets their requirements and ensure the software's usability.

Test Environment Setup: Configure and prepare test environments, including software installations, setups, and data requirements.