[Skip to main content](#main-content) [OpenNash Jobs](https://jobs.opennash.com/) [Hiring report](/reports/hiring/) · [All Tata Consultancy Services jobs](https://jobs.opennash.com/companies/tata-consultancy-services/) · [Search jobs](/search/) Tata Consultancy Services · Columbus, OH # Mainframe Network Columbus, OH $110,000- $130,000 Last seen on Tata Consultancy Services’s official careers site on August 1, 2026; it may have closed since. [Apply on Tata Consultancy Services’s careers site →](https://ibegin.tcsapps.com/candidate/jobs/416454J) [OpenNash Jobs](https://jobs.opennash.com/) / [Tata Consultancy Services](https://jobs.opennash.com/companies/tata-consultancy-services/) / Mainframe Network ## Job description Must Have Technical/Functional Skills z/OS fundamentals, TCP/IP networking, VTAM/SNA, RACF security, monitoring tools (SDSF, NETSTAT), and middleware connectivity (CICS, DB2, MQ) ### Operational Capabilities Incident & change management, performance monitoring, capacity planning, and automation (REXX scripting) ### Functional Strengths 24x7 production support, strong troubleshooting ability, stakeholder coordination, and compliance awareness (SOX/NERC-CIP) Roles & Responsibilities - Network Operations & Monitoring Perform 24x7 monitoring of mainframe network components and connectivity Monitor TCP/IP stack, ports, sessions, and communication failures - Track alerts, logs, and performance metrics using monitoring tools - Ensure high availability and stability of network services - CP/IP & Connectivity Management - Configure and manage z/OS TCP/IP stack and profiles - Manage ports, IP addressing, DNS resolution, and routing - Ensure connectivity between: Mainframe ↔ Distributed systems Mainframe ↔ External applications (middleware, APIs) - Support inter-LPAR communication (Sysplex, HiperSockets) - Incident Management & Troubleshooting Identify, analyze, and resolve network-related incidents (P1/P2/P3) ### Troubleshoot Connection failures Port/service issues MQ/DB2/CICS connectivity problems Perform root cause analysis (RCA) and provide resolution Act as single point of contact for network issues (L2) - Change & Configuration Management Implement changes to network configurations (TCP/IP, security rules, ports) Participate in: CAB meetings Change implementation and validation Maintain network configuration documentation Ensure minimal disruption during changes - Security & Compliance (Critical for Utilities) Administer network-level security controls using RACF Implement access controls for ports, services, and users Support audits and compliance requirements (NERC/CIP, SOX) Perform vulnerability and patch management activities - Middleware & Integration Support Ensure network connectivity for: CICS (transaction systems) DB2 (database connections) MQ (message queues) Support distributed integration (WebSphere, APIs, external apps) Troubleshoot application-level network issues - Performance & Capacity Management Monitor network performance (latency, throughput, session usage) Identify bottlenecks and optimize configurations Provide inputs for capacity planning (IP usage, bandwidth) Generate performance reports and KPIs - High Availability & Disaster Recovery Support HA setup and failover mechanisms - Participate in DR drills and recovery testing - Ensure network readiness during IPLs and system restarts - Maintain network redundancy and resiliency Salary Range: $110,000- $130,000 a year TCS Employee Benefits Summary: Discretionary Annual Incentive. ### Comprehensive Medical Coverage Medical & Health, Dental & Vision, Disability Planning & Insurance, Pet Insurance Plans. ### Family Support Maternal & Parental Leaves. ### Insurance Options Auto & Home Insurance, Identity Theft Protection. ### Convenience & Professional Growth Commuter Benefits & Certification & amp; Training Reimbursement. ### Time Off Vacation, Time Off, Sick Leave & Holidays. ### Legal & Financial Assistance Legal Assistance, 401K Plan, Performance Bonus, College Fund, Student Loan Refinancing. #LI-SP1