Top Tech Jobs & Startup Jobs in Chennai

Analyze and modernize COBOL mainframe applications by converting business logic into Java applications, microservices, and cloud-ready solutions. Develop, test, deploy, document, and optimize Java systems while maintaining functionality, performance, and data integrity. Collaborate with architects, analysts, business users, and testing teams; support integration testing, production deployment, troubleshooting, and post-migration activities.

Manage performance and capacity planning for IBM z/OS mainframe environments. Analyze SMF/RMF data, configure WLM, monitor system metrics, forecast processor and storage needs, perform diagnostics and root-cause analysis, and provide capacity reporting. Support complex environments involving Parallel Sysplex, LPARs, JES, CICS, DB2, and IMS. Provide technical guidance, documentation, client support, and 24/7 on-call service while identifying modernization and optimization opportunities.

Administer and maintain IBM CICS environments, including CICSPlex infrastructure and transaction-processing systems. Responsibilities include performance tuning, troubleshooting, upgrades, migrations, recovery management, disaster recovery readiness, and integration with DB2, MQ, RACF, and z/OS. The role also supports high availability, workload management, cloud migrations, and mission-critical mainframe environments while collaborating with clients and technical teams.

Administer enterprise mainframe storage and GDPS environments, including replication, cyber resiliency, HSM, tape, catalogs, capacity, performance, recovery, and disaster recovery operations. Support migrations, upgrades, resiliency initiatives, high-priority incidents, and customer technical discussions. Develop JCL, REXX, and SAS solutions, manage storage utilities, monitor IBM storage platforms, and collaborate with infrastructure, application, and disaster recovery teams.

Designs, builds, and maintains high-volume mainframe business logic while modernizing legacy systems for cloud and mobile integration. Responsibilities include performance optimization, debugging complex system interactions, testing, extracting business logic for migration, and developing scalable software using modern architectures, databases, APIs, containers, and messaging systems.

Develop and maintain automated acceptance, functional, regression, scalability, and performance tests for cloud-based enterprise applications. Define test strategies, plans, specifications, and cases; test UI, CLI, APIs, integrations, and systems; track defects; troubleshoot automation frameworks; and support quality engineering practices. Lead testing discussions, collaborate with engineering squads, and mentor QA engineers.

Administer and support enterprise Mainframe Db2, IMS, and CDC environments. Configure and monitor real-time replication, maintain data integrity, optimize performance, troubleshoot database and connectivity issues, and perform backup, recovery, migration, upgrades, and patching. Support high availability and disaster recovery, execute database refreshes and reorganizations, manage change tickets, and maintain IMS structures, CDC subscriptions, technical documentation, and operational procedures.

Leads 24x7 macOS device migration operations, including readiness validation, ADE tenant transitions, enrollment troubleshooting, backlog prioritization, evidence capture, shift handovers, vendor escalation, and post-migration hypercare. The role requires hands-on Jamf or Kandji administration, PowerShell and macOS automation, Microsoft 365 tenant migration expertise, stakeholder communication, runbook development, and incident remediation.

Administer and maintain IBM OMEGAMON monitoring infrastructure across z/OS and major mainframe subsystems. Develop alerting, event correlation, dashboards, reporting, performance baselines, and proactive degradation detection. Integrate monitoring data with AIOps and analytics platforms while supporting Windows, VMware, cloud, security compliance, and infrastructure automation environments. Perform root cause analysis, capacity planning, troubleshooting, and operational support for mission-critical enterprise systems.

Administers and supports IBM DB2 on z/OS, including SMP/E installation, subsystem and data-sharing configuration, performance tuning, availability, backup and recovery, catalog maintenance, security, and disaster-recovery testing. Diagnoses complex system issues, supports DBAs, manages DB2 architecture and internal structures, and uses monitoring and tracing tools to resolve performance and availability problems. Documents procedures and collaborates with IBM and other vendors on defects and technical issues.