Mainframe Network Engineer

Who We Are At Kyndryl, we run and reimagine the mission-critical technology systems that drive advantage for the world’s leading businesses. We are at the heart of progress; with proven expertise and a continuous flow of AI-powered insight, enabling smarter decisions, faster innovation, and a lasting competitive edge. For our people—Kyndryls—that means doing purposeful work that powers human progress. Join us and experience a flexible, supportive environment where your well-being is prioritized and your potential can thrive. The Role Key Responsibilities Communications Server (VTAM & TCP/IP) Configure, maintain, and optimize VTAM definitions (APPL, LUs, logmodes, major/minor nodes), EE/High‑speed links as applicable, and session management for critical subsystems. Engineer and tune z/OS TCP/IP stacks: stacks parms, interfaces/OSA, routing, VIPA/DVIPA, Sysplex Distributor/WLM integration, HiperSockets (where applicable), packet tracing, and diagnostics. Implement and troubleshoot TN3270 server configurations, including port management, SSL/TLS enablement, session pooling, and workstation/client interoperability. Managed File Transfer & Secure Connectivity Support Connect:Direct (NDM) : node configuration, Secure+ parameters, performance tuning, checkpoint/restart, and partner onboarding. Configure and support FTP/FTPS/SFTP/SFTPS services on z/OS, including TLS/SSH ciphers, certificates/keys, SAF keyrings, user authentication, exits, and logging. Own Policy Agent (PAGENT) configurations for IPSec and AT‑TLS policies; implement application‑aware TLS enablement and certificate rotation in partnership with Security. Monitoring, Operations & Troubleshooting Use NetView/SA to automate message handling, operator commands, resource start/stop, and recovery actions for network services. Employ MainView or Omegamon to monitor availability, response times, and resource utilization; set thresholds/alerts and drive incident response. Perform advanced diagnostics (packet trace, IP...