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 </div

Qualifications

BACHELOR OF COMPUTER SCIENCE