Network Engineer (Mainframe/zOS)

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/lokesh.sharma@stefanini.com

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.

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

Experience Required

• 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

Preferred Experience

• 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
• Participate in a 24/7 on-call rotation
• Flexibility to work weekends, holidays, and varied shifts
• Strong collaboration skills across cross-functional teams

Education Required

Education Preferred

**Listed salary ranges may vary based on experience, qualifications, and local market. Also, some positions may include bonuses or other incentives***

Stefanini takes pride in hiring top talent and developing relationships with our future employees. Our talent acquisition teams will never make an offer of employment without having a phone conversation with you. Those face-to-face conversations will involve a description of the job for which you have applied. We will also speak with you about the process, including interviews and job offers.

About Stefanini Group

The Stefanini Group is a global provider of offshore, onshore and near shore outsourcing, IT digital consulting, systems integration, application, and strategic staffing services to Fortune 1000 enterprises around the world. Our presence is in countries like the Americas, Europe, Africa, and Asia, and more than four hundred clients across a broad spectrum of markets, including financial services, manufacturing, telecommunications, chemical services, technology, public sector, and utilities. Stefanini is a CMM level 5, IT consulting company with a global presence. We are a CMM Level 5 company.

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