Mainframe Network

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

1. 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

2. 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)

3. 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)

4. 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

5. 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

6. 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

7. 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

8. 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

Do you have experience in WebSphere?, Do you have a Bachelor’s degree?, Qualifications : BACHELOR OF COMPUTER SCIENCE

Pulled from the full job description

• Pet insurance
• Health insurance
• Vision insurance
• Dental insurance
• Commuter assistance, 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.