Lead Infrastructure Engineer - Mainframe Network

High Risk Roles (HRR) are sensitive roles within the technology organization that require high assurance of the integrity of staff by virtue of 1) sensitive cybersecurity and technology functions they perform within systems or 2) information they receive regarding sensitive cybersecurity or technology matters. Users in these roles are subject to enhanced pre-hire screening which includes both criminal and credit background checks (as allowed by law). The enhanced screening will need to be successfully completed prior to commencing employment or assignment.

• Uses enterprise-authorized AI capabilities within the work environment to accelerate infrastructure analysis and design documentation, validating outputs and handling operational data according to sensitivity and security requirements.
• Applies reuse-first, AI-assisted practices within delivery and automation routines to identify recurring issues and validate remediation options, ensuring changes are traceable/auditable and aligned to resiliency and security expectations.
• Develop and execute a forward-looking vision and strategy for mainframe network engineering, ensuring alignment with organizational objectives and technology roadmaps.
• Lead and mentor a team of mainframe network engineers, fostering a high-performance culture focused on technical excellence, innovation, and professional growth.
• Oversee the end-to-end design, implementation, and maintenance of mainframe network infrastructure, with a focus on connectivity, security, performance, and operational efficiency.
• Ensure the highest levels of availability, disaster recovery, and business continuity for all mainframe network operations.
• Collaborate with cross-functional teams—including application development, infrastructure, and security—to support integration, modernization, and transformation initiatives.
• Establish, document, and enforce best practices, standards, and compliance requirements for mainframe network engineering.
• Continuously monitor and evaluate emerging technologies, industry trends, and regulatory changes to drive innovation and maintain a competitive edge.
• Allocate resources and oversee project timelines to ensure successful delivery of mainframe network engineering initiatives.
• Provide clear, concise, and actionable reporting and communication to senior leadership on mainframe network performance, risks, and strategic initiatives.

• Formal training or certification on infrastructure engineering concepts and 5+ years applied experience 
• Advanced understanding of TLS protocols, especially TLS 1.3, and their application in securing mainframe network communications. Also understanding of AT-TLS and be able to create solutions with it. 
• 15+ years of progressive experience in mainframe network engineering, with at least 5 years in a senior leadership or lead engineering role.
• Deep expertise in mainframe network technologies, including IBM z/OS, VTAM, TCP/IP, OSPF, SNA, and network security.
• Strong understanding of packet analysis (Wireshark knowledge) and troubleshooting techniques for mainframe network environments.
• Demonstrated success in leading large-scale mainframe network projects and engineering teams and in-depth knowledge of enterprise IT architecture, infrastructure, and operations.
• Exceptional leadership, communication, and stakeholder management skills.
• Experience with regulatory compliance, risk management, and disaster recovery planning.
• Proven ability to drive innovation, adapt to evolving technology landscapes, and deliver results in a fast-paced environment.
• Demonstrated experience using enterprise-authorized AI capabilities within the work environment to support infrastructure engineering workflows with strong validation habits and awareness of data sensitivity.
• Ability to review and validate AI-assisted recommendations before implementation, escalating when uncertain and ensuring outcomes align to resiliency, security, and auditability expectations.