Title : Mainframe DB2 DBA Lead Location: Remote Duration : 12 Months Overview: We are Seeking an experienced Mainframe Database Lead to support and guide enterprise DB2 environments running on IBM z/OS platforms. This role will drive database reliability, performance, recovery readiness, platform upgrades, and operational excellence across critical production environments. Key Responsibilities: - Lead administration and support of DB2 databases on z/OS. - Manage performance tuning, SQL optimization, and capacity planning activities. - Design and review database structures, indexing strategies, and storage configurations. - Oversee backup, recovery, and disaster recovery processes. - Drive DB2 upgrades, migrations, and maintenance initiatives. - Troubleshoot complex production issues and provide technical leadership during critical incidents. - Collaborate with infrastructure, security, storage, and application teams. - Define standards, best practices, and operational procedures for database management. - Mentor junior DBAs and provide technical guidance on strategic database initiatives. Required Skills: - Extensive experience with DB2 for z/OS administration. - Strong knowledge of z/OS, JCL, TSO/ISPF, SDSF, and JES2. - Expertise in SQL tuning, performance analysis, and DB2 utilities. - Experience with backup/recovery strategies and disaster recovery planning. - Knowledge of database security, access controls, and compliance requirements. - Proven experience leading DB2 upgrade, migration, and modernization projects. Preferred: - DB2 Data Sharing / Parallel Sysplex - RACF - BClient Tools - REXX - IMS, CICS, MQ - Banking, Financial Services, or other regulated environments