An Arachni developer specializes in using the Arachni software, a feature-rich framework designed for evaluating the security of web applications. They identify and exploit web application vulnerabilities to test for potential security threats. Their tasks include system configuration, running scans, reviewing and interpreting scan results, patching vulnerabilities, and ensuring overall system security. They work closely with other developers to ensure the web applications meet security standards. Their expertise helps organizations prevent unauthorized access, data breaches, and other cyber threats. They continuously update their knowledge and skills to keep up with evolving cyber-security threats.