Subject Matter Expert (Support&Ops)

Job description

Job Description: Mainframe Storage Engineer / SpecialistRole SummaryWe are looking for an experienced Mainframe Storage Engineer / Specialist to support the administration, availability, capacity, performance, resiliency, and modernisation of enterprise IBM Z storage environments. The role requires strong hands-on expertise in DFSMS, DFSMSdss, DFSMShsm, DASD, Tape, Storage Management Subsystem (SMS), catalog management, storage provisioning, performance management, and disaster recovery .The individual will work closely with Mainframe infrastructure, system programming, application, database, backup, disaster recovery, operations, and storage teams to ensure highly available, resilient, secure, and optimised storage services for business-critical Mainframe platforms. Key Responsibilities Key ResponsibilitiesAdminister, configure, maintain, and support IBM Z Mainframe storage environments , including DASD, tape, virtual tape, and associated storage-management components.Manage and support DFSMS, DFSMSdss, DFSMShsm, and Storage Management Subsystem (SMS) configurations and policies.Configure and maintain SMS Storage Classes, Management Classes, Data Classes, Storage Groups, ACS routines, and storage policies .Perform DASD capacity management, allocation, provisioning, monitoring, reclamation, and optimisation across Mainframe storage environments.Administer and troubleshoot DFSMShsm (HSM) functions including migration, recall, backup, recovery, space management, and automatic storage-management processes.Manage catalogs and VSAM-related storage activities , including IDCAMS operations, catalog management, recovery, and troubleshooting.Support tape management, virtual tape environments, tape libraries, retention, vaulting, and media-management processes , depending on the environment.Monitor storage utilisation, capacity, availability, performance, I/O activity, and growth trends and proactively address capacity or performance risks.Perform problem determination for storage-related incidents using system logs, storage reports, SMF/RMF data, diagnostic information, dumps, and storage-monitoring tools .Support storage hardware provisioning, volume configuration, device management, and connectivity in collaboration with enterprise storage and IBM Z infrastructure teams.Support storage replication and recovery technologies for business continuity, high availability, disaster recovery, and data protection .Participate in DR exercises, storage failover/recovery testing, resiliency assessments, capacity planning, and business-continuity activities .Perform and support storage software installation, upgrades, maintenance, PTF application, lifecycle management, and compatibility assessments .Work with related Mainframe technologies and teams including z/OS, Db2, CICS, IMS, MQ, RACF, systems programming, databases, backup/recovery, automation, and operations .Develop and maintain REXX, JCL, ISMF procedures, storage utilities, or other automation to improve storage administration and operational efficiency.Support dataset allocation, movement, backup, restore, migration, recall, archive, retention, and recovery activities .Maintain technical documentation, including storage architecture, capacity records, configuration documentation, SOPs, operational procedures, recovery procedures, and audit evidence .Identify opportunities for storage optimisation, automation, capacity improvement, modernisation, observability, and operational cost reduction across the Mainframe platform. Skill Requirements Required Technical SkillsStrong hands-on knowledge of IBM z/OS Mainframe Storage Management DFSMS / DFSMSdfp DFSMShsm (HSM) DFSMSdss Storage Management Subsystem (SMS) DASD management and capacity planning SMS Storage Classes, Management Classes, Data Classes, Storage Groups, and ACS routines VSAM, IDCAMS and catalog management Tape and Virtual Tape management Dataset allocation, migration, recall, backup, restore, archive, and recoveryStorage performance monitoring using RMF, SMF, and storage-management tools Knowledge of I/O, channels, storage devices, volumes, and IBM Z storage concepts TSO/ISPF, ISMF and JCL REXX / scripting and storage automation Disaster recovery and storage resiliency conceptsStorage capacity, performance, and utilisation managementIncident, problem, and change managementStrong troubleshooting and root-cause-analysis skillsPreferred SkillsExposure to one or more of the following would be advantageous: IBM DS8000 family or comparable enterprise storage platforms IBM TS7700 Virtual Tape Library and enterprise tape technologiesStorage replication and resiliency technologies such as Metro Mirror, Global Mirror, and HyperSwap GDPS and IBM Z disaster-recovery/storage-resiliency concepts FICON and IBM Z storage connectivity IBM Copy Services Manager (CSM) or equivalent storage replication-management solutionsMainframe tape-management products such as CA 1, Control-T, RMM, or equivalent Mainframe storage monitoring, reporting, capacity, and performance-analysis tools CICS, Db2, IMS, IBM MQ storage requirements and concepts RACF and Mainframe storage security concepts Enterprise backup, archive, retention, and data-protection technologiesStorage migration, consolidation, hardware refresh, and technology-upgrade projects Ansible, Python, Git, REST APIs, or DevOps automation in a Mainframe/storage environmentMainframe storage modernisation and integration with hybrid-cloud, cyber-resiliency, and enterprise data-protection platforms Other Requirements ExperienceRelevant hands-on experience in Mainframe storage engineering, administration, system programming, or infrastructure support .Experience supporting business-critical enterprise IBM Z storage environments with high availability, performance, and resiliency requirements.Experience administering and troubleshooting DFSMS, DFSMShsm, DFSMSdss, SMS, DASD, catalog, VSAM, and tape environments .Experience with storage capacity planning, performance monitoring, provisioning, backup/recovery, migration, and optimisation .Experience supporting storage upgrades, migrations, disaster recovery, resiliency testing, and hardware/software lifecycle activities .Experience working within structured ITIL-based Incident, Problem, Change, and Release Management processes.Desired ProfileStrong analytical and problem-solving capability.Ability to independently troubleshoot complex Mainframe storage, capacity, performance, and availability issues .Strong understanding of enterprise storage architecture, data lifecycle management, backup/recovery, and resiliency concepts .Good written and verbal communication skills.Comfortable working with global Mainframe, storage, system programming, database, application, infrastructure, and vendor teams .Strong focus on availability, capacity, performance, resiliency, documentation, automation, and continuous improvement .Ability to proactively identify storage capacity, performance, and operational risks and coordinate appropriate remediation. Apply now Information at a Glance Why HCLTech? At HCLTech, you'll supercharge your potential. You'll find your career. And you'll find your spark. All at a place that knows that helping its customers stay on top starts by putting its people first. HCLTech is a global technology company, home to more than 230,000 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending September 2026 totaled $14.8 billion. Disclaimer Privacy Statement Terms of use Sitemap Raise a Grievance We use cookies on our site. Please read more about cookies policy here. Opens in a ne