System Testing Test Case Development

I need a seasoned QA professional to design thorough test cases for a full round of system testing on my application. The goal is to give developers and stakeholders a clear, step-by-step checklist that validates every function end-to-end, flags potential integration gaps, and confirms the product behaves as expected in real-world conditions.

Scope
• Analyse existing requirements, user stories, and UX flows.
• Draft comprehensive system-level test cases that cover positive, negative, edge, and regression scenarios.
• Map each case to its corresponding requirement for full traceability.
• Deliver in an easy-to-maintain format (Excel, Google Sheets, or any popular test-management tool such as TestRail or Zephyr—whichever you prefer).

Acceptance Criteria
• All critical functional paths are exercised.
• Each test case includes clear preconditions, data sets, execution steps, and expected results.
• Naming and numbering follow a logical convention for quick reference.
• Documentation is free of ambiguity and ready for immediate execution by another tester.

If you have experience crafting test suites for complex systems and can turn around well-structured, actionable documentation quickly, let’s get started.