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. Highlights: 1. Manage and support enterprise DB2 environments on z/OS 2. Perform DB2 installation, configuration, upgrades, and maintenance 3. Handle database performance monitoring and tuning Querétaro, Querétaro 76000 Posted March 12th, 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 DEVELOPER SQL APPLICATION DEVELOPER