Mainframe Network Lead

Job Description:

DXC helps global companies run their mission-critical systems and operations while modernizing IT optimizing data architectures and ensuring security and scalability across public private and hybrid clouds. The worlds largest companies and public sector organizations trust DXC to deploy services to drive new levels of performance competitiveness and customer experience across their IT estates.

Our more than 125000 people in 70-plus countries are entrusted by our customers to deliver transformative technologies to ensure the success safety and well-being of businesses and people around the world. By combining strengths and expertise globally we create solutions and deliver greater outcomes for customers across their entire IT estate. Learn more about how we deliver excellence for our customers and colleagues at .

DXC Global Infrastructure Services (GIS) manages and modernizes IT infrastructure for the worlds largest enterprises through agentic platform-led operations. We deliver cloud security workplace infrastructure and business-process services that shift operations from reactive support to proactive outcome-driven service delivery at scale with human-in-the-loop governance.

DXC Infrastructure Services deliver agentic operations through DXC OASIS to manage largescale missioncritical environments. Autonomous policygoverned agents anticipate issues optimize performance and support remediation with humanintheloop control shifting operations from reactive support to preemptive resilient service delivery.

The Mainframe Network System Programmer is a senior professional responsible for the administration security availability and performance of network infrastructure within IBM z/OS environments. This role is critical to ensuring the connectivity and continuity of business-critical services managing key technologies such as TCP/IP VTAM/SNA Communications Server and high-availability solutions.

In this position the successful candidate will install configure and maintain z/OS network software and services optimize TCP/IP and VTAM/SNA environments and ensure the security and resilience of enterprise-scale mission-critical infrastructure. The role requires strong troubleshooting skills to resolve complex connectivity and performance issues as well as active participation in migrations infrastructure upgrades and disaster recovery activities.

The ideal candidate is a highly specialized IBM Z/Mainframe networking expert with deep technical expertise combined with leadership problem-solving and stakeholder management skills. This individual will collaborate with cross-functional technical teams and vendors provide technical leadership and mentoring and participate in a 24x7 on-call rotation to support global operations. Fluency in English is essential for effective collaboration within international teams and global projects.

• Install configure upgrade and maintain z/OS network software and services
• Manage and optimize TCP/IP and VTAM/SNA environments for performance and reliability
• Ensure network security resilience and operational stability across mainframe environments
• Troubleshoot complex connectivity and performance issues using z/OS diagnostics and monitoring tools
• Support migrations infrastructure upgrades and disaster recovery activities
• Collaborate with cross-functional technical teams and vendors on network infrastructure initiatives
• Provide technical leadership and mentoring to junior team members
• Participate in a 24x7 on-call rotation to support business-critical services
• Implement and manage network security technologies including AT-TLS TLS certificates IPsec and secure file transfer protocols
• Develop and maintain automation scripts using REXX CLIST or USS Shell to streamline operations

• 8 years of experience in Mainframe Network Systems Programming or Administration
• Fluent English (written and spoken) is mandatory
• Strong expertise in IBM z/OS Communications Server TCP/IP VTAM/SNA APPN/HPR and Enterprise Extender
• Experience with network security technologies including AT-TLS TLS certificates IPsec IP filtering SSH and secure file transfer protocols
• Knowledge of VIPA/DVIPA Sysplex Distributor Parallel Sysplex networking and high-availability environments
• Hands-on experience with z/OS commands TSO/ISPF JCL network diagnostics monitoring and performance tuning
• Experience with disaster recovery incident management change management and production support
• Automation and scripting skills using REXX CLIST USS Shell or similar tools

DXC is an employer of choice with strong values and fosters a culture of inclusion belonging and corporate citizenship. We inspire and take care of our people. We work to create a culture of learning diversity and inclusion and are dedicated to strong ethics and corporate citizenship. DXC is where brilliant people seize opportunities to advance their careers and amplify customer success.

Full-time hires are eligible to participate in the DXC benefit program. DXC offers a comprehensive flexible and competitive benefits program which includes but is not limited to health dental and vision insurance coverage; employee wellness; life and disability insurance; a retirement savings plan paid holidays paid time off.

At DXC Technology we believe strong connections and community are key to our success. Our work model prioritizes in-person collaboration while offering flexibility to support wellbeing productivity individual work styles and life circumstances. Were committed to fostering an inclusive environment where everyone can thrive.

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