Top Tech Jobs & Startup Jobs in Chennai

Designs, builds, maintains, and optimizes high-volume mainframe business logic. Responsibilities include debugging complex system interactions, improving performance, extracting legacy business logic for cloud migration, and integrating mainframe data with modern cloud and mobile applications. The role requires software development expertise, database knowledge, REST services, microservices, containers, messaging, object-oriented design, and modern DevOps practices.

Provides L2/L3 production support for Natural and Adabas mainframe applications in IBM z/OS environments. Responsibilities include monitoring performance, troubleshooting incidents, root cause analysis, batch and online processing support, job scheduling, release activities, documentation, and compliance. Collaborates with business, development, and infrastructure teams to resolve issues within SLA timelines and improve service reliability.

Leads enterprise, data center, and security infrastructure operations as the final escalation point for complex network incidents. Owns major incident, problem, and change management; approves network changes, migrations, and technology refreshes; and drives architecture improvements, automation, capacity planning, and operational governance. Leads vendor discussions, mentors network engineers, reviews technical designs, and guides project and operations teams across global environments.

Execute tenant-to-tenant Microsoft Entra application migrations by recreating configurations, managing secrets and certificates, validating SSO and access, documenting evidence, and triaging issues. The role operates in a 24x7 shift model with mandatory handovers, SLA-driven queues, cutover support, inventory reporting, and hypercare. Success is measured through application throughput, defect rates, evidence completeness, incident resolution time, and schedule adherence.

Leads infrastructure and network architecture for enterprise clients, covering requirements, solution design, implementation, governance, migrations, cloud adoption, and technical roadmaps. Designs and supports data center, network, security, voice, and cloud environments; troubleshoots critical outages; manages monitoring, maintenance, documentation, and vendor coordination. Provides architecture oversight, incident escalation, 24/7 support readiness, automation, capacity planning, and mentorship for engineering and operations teams.

Install, configure, maintain, and troubleshoot IBM CICS environments and CICSplex infrastructure. Support production transaction processing, upgrades, migrations, performance, availability, resiliency, disaster recovery, and integrations with Db2, MQ, RACF, VSAM, and z/OS. Participate in on-call rotations, planned maintenance, and continuous improvement initiatives while collaborating with clients and technical teams.

Administer and maintain IBM MQ on z/OS, including installation, upgrades, configuration, tuning, performance monitoring, troubleshooting, security, clustering, Queue Sharing Groups, Sysplex environments, disaster recovery, and automation. The role supports high availability and customer infrastructure reliability, including on-call coverage during nights and weekends.

Administer enterprise mainframe storage and GDPS environments, including replication, cyber resiliency, capacity planning, performance tuning, migrations, upgrades, and recovery solutions. Support IBM storage systems, manage incidents and PMRs, create operational reports, and participate in resiliency and modernization projects. The role also involves customer-facing technical discussions, storage utility administration, and maintaining production environments.

Administer and support enterprise DB2 for z/OS environments, including installation, configuration, upgrades, monitoring, performance tuning, backup and recovery, disaster recovery, security, and object management. Troubleshoot incidents, perform SQL and access-path optimization, automate operational tasks with JCL and REXX, and support 24x7 production operations. Collaborate with application, infrastructure, storage, and systems programming teams while contributing to compliance, change management, and service delivery.

Leads enterprise data engineering, warehousing, integration, analytics, reporting, and regulatory data initiatives for banking and financial services. Designs scalable pipelines and data platforms, develops Oracle SQL and PL/SQL solutions, builds BI dashboards, manages data quality and governance, supports lending, risk, securities, tax, payments, treasury, and customer data domains, and provides L2/L3 production support. Partners with senior stakeholders and leads global teams to improve reporting accuracy, compliance, reconciliation, and operational performance.