Remote Senior Mainframe Engineer: Security Remediation

Oorwin AI is seeking a Senior Mainframe Developer to investigate and remediate security vulnerabilities in production banking systems. You will work hands-on with COBOL, CICS, DB2, and z/OS to trace vulnerabilities to their root cause and implement secure fixes without disrupting critical operations. The role demands strong problem-solving skills, the ability to work independently in high-stakes environments, and collaboration with security, infrastructure, and application teams to validate