When researching a software quality expert witness, see The American Society For Quality’s Minimum Expectations of a Software Quality Engineer. The ASQ recommends that the software quality engineer:
Must have a thorough understanding of verification and validation processes, including early software defect detection and removal, inspection, and testing methods (e.g., types, levels, strategies, tools and documentation). Must be able to analyze test strategies, develop test plans and execution documents, and review customer deliverables.
Must have a basic understanding of configuration management processes, including planning, configuration identification, configuration control, change management, status accounting, auditing and reporting. Must assess the effectiveness of product release and archival processes.