Job Description :-

Excellent understanding of System z architecture
Excellent experience with IBM z/OS operating system
Experience in building Mainframe LPAR and OS Upgrades
Knowledge Catalog management, IBM system utilities
Knowledge on VTAM, TCPIP, ACF2 and GDPS
Experience on z/VM, zVSE and z/Linux
Installation of patches and fixes
Installation and maintenance of ISV products, REXX, RMF, SMF
Administration and configuration of z/VM Operating Systems running SuSE or RedHat Linux
Installation and customization of z/VM and related IBM or other ISV software;
Extensive experience with providing performance and tuning using monitoring tools (f. ex. z/VM Performance Monitor or other tools);
DIRMAINT administration – RACF/Top secret administration;
REXX knowledge - SSI knowledge;
Ability to support network configuration and maintenance (Real TCP/IP stack, VSWITCH, TCPIP tools in z/VM, etc.);
Solid skills in z/Linux system cloning and configuration including memory and file system allocation;
System parameters/parmlib maintenance
Managing incidents on z/OS related issues
z/OS performance monitoring and reporting
Knowledge on DFSMS, DFSMShsm, Flashcopy, ICF Catalogs, HCD
Capable of planning and supporting Disaster recovery exercises
Performance tuning & Development of operational procedures
Experience with system indicators (logs, dumps, error) logs for pro-active management of system problems
Installation and maintenance of ISV products (For zVM, ZVSE and zOS)
Ability to work with Developers in fixing issues

Key Responsibilities

Incident Management / Problem Management by performing problem analysis and resolution implementation
Support maintenance release and major OS upgrades.
Process client requests for system software modifications
Review system indicators (logs, dumps, error) logs for pro-active management of system problems
Work with operations to monitor, maintain and IPL systems to improve consistency and availability
Monitor / Tune system performance and work with performance engineering and capacity teams
Ensure availability and performance objectives, as required by clients and management, are maintained for operating systems and for system software components
Implement appropriate tools and processes to automate repeated tasks
Manage various license codes for infrastructure software.
Capable of planning and supporting Disaster recovery exercises
Performance tuning & Development of operational procedures
Implement changes as needed to support other towers and day-to-day operations.
Work with IBM and other Independent Software Vendors on a regular basis
Provide regular management reports / analysis to senior management team regarding Incidents, Changes and requests

Infra. Architect - Mainframe z/OS Administration

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