Network Engineer (Mainframe/zOS)

Stefanini Group • Dearborn, MI

2d • Onsite

About The Position

Stefanini Group is hiring! Stefanini is looking for a Network Engineer (Mainframe/zOS) (Dearborn, MI) For quick apply, please reach out to Lokesh Sharma at 248-582-6565/[email protected] We are seeking an experienced Senior Network Engineer to support the design, implementation, and optimization of enterprise network infrastructure, with a strong focus on mainframe (z/OS) environments.

Requirements

• 10+ years of overall IT experience, 8+ years in development or engineering roles
• Deep understanding of network protocols and standards (TCP/IP, SNA, VTAM, APPN, Enterprise Extender)
• Expertise in network security and encryption (SSL/TLS, SSH, AT-TLS)
• Experience with IBM z/OS Communications Server and Policy Agent (Pagent)
• Proficiency in network analysis and troubleshooting tools (packet capture, sniffer traces)
• Strong hands-on expertise in at least one programming language (or working knowledge of two)
• Minimum 5 years of experience with IBM z/OS Communications Server, including: o SNA, VTAM, APPN / Enterprise Extender o TCP/IP stack configuration
• Network Analysis & Troubleshooting Analyze TCP/IP packet captures and network traces Execute and interpret VTAM traces to resolve complex issues Support Enterprise Extender (EE) for SNA over IP
• Security & Protocol Management Configure and maintain z/OS Policy Agent (Pagent) Manage digital certificates and keyrings Support secure file transfer protocols (SFTP, FTPS, Connect:Direct)
• System Support & Infrastructure Support IBM 3270 emulators (PCOMM, HOD, HACP-EE) Maintain enterprise printing systems and protocols (PCL, PostScript)
• Reporting & Performance Generate reports using SMF data, REXX, CLIST, or Java Perform performance monitoring and capacity planning
• Participate in a 24/7 on-call rotation
• Flexibility to work weekends, holidays, and varied shifts
• Strong collaboration skills across cross-functional teams

Nice To Haves

• Programming experience in Java or other languages
• Experience with Linux/Unix environments
• Familiarity with automation and scripting (REXX, CLIST)
• Experience with tools such as PuTTY, WinSCP, ServiceNow

Responsibilities

• Define and design network architecture, including layout, components, and data flow
• Develop deployment strategies and lead implementations, including handoff to operations
• Lead deployment of network technologies such as routers, switches, firewalls, VPNs, QoS, and wireless access points
• Implement and maintain network security, including intrusion detection and data encryption
• Ensure compliance with industry standards (e.g., PCI DSS, HIPAA)
• Integrate new network and telecommunications technologies
• Optimize network performance, minimize latency, and maximize throughput
• Perform advanced troubleshooting and network performance analysis

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 5,001-10,000 employees