A Defect Analysis Developer is responsible for identifying, analyzing, and documenting defects in software during its development. They use debugging tools and techniques to locate and fix bugs, maintain records for future reference, and ensure software quality. They collaborate with software developers and quality assurance teams to understand the software's functionality and design. They also conduct root cause analysis to prevent recurring defects, and help in improving the software development process. Additionally, they may assist in software testing, problem-solving, and in the creation of test cases and scenarios to preemptively catch potential defects.