Summary: KeyBank is seeking an experienced Mainframe DB2 Administrator to manage and support enterprise DB2 environments on z/OS, focusing on administration, performance tuning, and high availability for banking applications. Highlights: 1. Administer and support IBM DB2 for z/OS databases 2. Handle database performance monitoring and tuning 3. Support production incidents and root cause analysis Querétaro, Querétaro 76000 Posted February 14th, 2026 Looking for more job opportunities? Click here! Job Type: Full Time Job Category: IT Job Description Mainframe DB2 Admin \| KeyBank Location: Mexico (CDMX / Guadalajara / Monterrey / Querétaro) Job Type: Contract / Full\-Time Job Description KeyBank is looking for an experienced Mainframe DB2 Administrator to manage and support enterprise DB2 environments on z/OS. The ideal candidate will have strong expertise in DB2 administration, performance tuning, database maintenance, and ensuring high availability for mission\-critical banking applications. Key Responsibilities Administer and support IBM DB2 for z/OS databases Perform DB2 installation, configuration, upgrades, and maintenance Handle database performance monitoring and tuning Manage DB2 utilities: REORG, RUNSTATS, COPY, RECOVER, LOAD, UNLOAD Backup, recovery, and disaster recovery planning/support Handle DB2 security, access control, and audit compliance Support production incidents and root cause analysis Work with application teams for schema changes and release support Implement database best practices and documentation standards Ensure system stability and SLA compliance ✅ Required Skills Strong experience as a DB2 Admin on Mainframe (z/OS) Hands\-on with DB2 utilities (REORG, RUNSTATS, COPY, RECOVER) Experience in DB2 performance tuning and monitoring Knowledge of JCL, TSO/ISPF Understanding of database backup/recovery strategies Strong troubleshooting and communication skills * Preferred Skills (Good to Have) Banking/Financial domain experience Knowledge of CICS / IMS / COBOL (plus) Experience with automation/scheduling tools (CA7, Control\-M) Exposure to DB2 data sharing and sysplex environments Interview Details (Mexico Time) Interview Date: 12th Feb 2026 (Thursday) Timing: 11:00 AM to 03:00 PM Note: Interview timings are post 11:00 AM and before 4:00 PM (Mexican Time). Hashtags \#Mainframe \#DB2 \#DB2Admin \#zOS \#IBMMainframe \#JCL \#TSO \#ISPF \#DatabaseAdmin \#PerformanceTuning \#BackupRecovery \#BankingJobs \#KeyBank \#MexicoJobs \#CDMX \#Guadalajara \#Monterrey \#Queretaro \#Hiring \#TechJobs Required Skills CLOUD SECURITY ENGINEER SRE ENGINEER (SITE RELIABILITY/RESILIENCY)