Sr Tower Lead (Support & Operations)
India
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Job Description
Sr Tower Lead (Support & Operations)
| Chennai, Tamil NaduBengaluru, Karnataka

Job Summary

Mainframe Network 

Role Summary

Responsible for the administration, support, maintenance, and optimization of IBM Mainframe network infrastructure, ensuring secure, stable, and high-performing connectivity between mainframe systems, distributed platforms, applications, and external networks. The role supports business-critical production environments and drives continuous improvement, automation, and operational excellence.

Technical Skills Required

Mandatory

  • IBM z/OS
  • VTAM
  • TCP/IP for z/OS
  • SNA Networking
  • OSA Configuration
  • NCP Concepts
  • JES2/JES3 Connectivity
  • TSO/ISPF
  • RACF Security Basics
  • SDSF
  • Network Diagnostics and Tracing

Preferred

  • NetView
  • System Automation
  • MQ
  • CICS Connectivity
  • FTP/SFTP
  • Connect:Direct
  • SSL/TLS Certificates
  • Network Performance Tuning
  • Mainframe Automation Tools
  • Disaster Recovery Processes

Experience Levels

Associate General Manager / Lead (E4.2-E5.1)

  • 10+ years in Mainframe Infrastructure
  • 5+ years in Mainframe Networking
  • Expertise in VTAM/TCP-IP architecture
  • Client-facing delivery experience
  • Team leadership and technical governance
  • Transformation and modernization exposure

Soft Skills

  • Stakeholder Management
  • Client Communication
  • Incident Management
  • Problem Solving
  • Leadership and Mentoring
  • Documentation and Governance
  • Continuous Improvement Mindset

 

Key Responsibilities

  • Administer and support VTAM, TCP/IP, and SNA network environments.
  • Configure and maintain mainframe communication resources and network definitions.
  • Monitor network performance, availability, and capacity utilization.
  • Troubleshoot network connectivity issues impacting CICS, MQ, IMS, DB2, and batch workloads.
  • Perform incident, problem, and change management activities.
  • Coordinate with distributed network, security, storage, and infrastructure teams.
  • Implement network-related software upgrades, maintenance, and vulnerability remediation.
  • Support disaster recovery, business continuity, and infrastructure resilience initiatives.
  • Develop and maintain operational documentation, runbooks, and standard operating procedures.
  • Drive automation and process improvements to enhance service quality and reduce manual effort.
  • Participate in on-call support and critical production issue resolution.
  • Ensure compliance with security, audit, and regulatory requirements.

Skill Requirements

  • Stakeholder Management
  • Client Communication
  • Incident Management
  • Problem Solving
  • Leadership and Mentoring
  • Documentation and Governance
  • Continuous Improvement Mindset

Other Requirements

  • Mainframe Network Support (VTAM)
  • Network Automation
  • Performance & Capacity Management
  • Mainframe Security Integration
  • z/OS Infrastructure Services
  • Architecture & Engineering Support
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Information at a Glance

Why HCLTech?

At HCLTech, you'll supercharge your potential. You'll find your career. And you'll find your spark. All at a place that knows that helping its customers stay on top starts by putting its people first.

HCLTech is a global technology company, home to more than 223,000 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending June 2026 totaled $14.8 billion.