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# IT System Engineer z/OS Netzwerk und Security

- **Company:** C2N
- **Location:** Esslingen am Neckar, Germany (Remote available)
- **Contract:** Permanent contract
- **Skills:** Customer Information Control System (CICS), Cloud Computing, Information Systems, IBM DB2, Middleware, IBM Parallel Sysplex, Job Control Language (JCL), Mainframes, TCP/IP, Transmission Control Protocol (TCP), Z/OS, Tso/ispf, Transport Layer Security, File Transfer Protocol (FTP), Firewalls (Computer Science), Information Technology
- **Published:** September 15, 2026
- **Apply:** https://jobs.meinestadt.de/esslingen-am-neckar/standard?id=260235026

## About the Role

Betriebswirte/Fachwirte/Fachkaufleute (Fachschulniveau), * Studium der Informatik oder eine vergleichbare Berufsausbildung mit Berufserfahrung im z/OS-Umfeld

 * Fundierte z/OS- und Mainframe-Kenntnisse, sicherer Umgang mit TSO/ISPF und JCL, Erfahrung mit CICS, DB2, MQ, Verständnis von Sysplex-Umgebungen
 * Expertise in TCP/IP und VTAM auf z/OS sowie Kommunikationsdiensten
 * Erfahrung mit Netzwerkparametern und End-to-End-Konnektivität
 * Tiefgreifendes Wissen zu TLS/SSL, Ciphersuites, AT-TLS und Kryptographie
 * Monitoring, Analyse und Troubleshooting von Netzwerkproblemen mittels Tools und TracesSehr gute
 * Sehr gute Deutschkenntnisse
 * Teamspirit und Diversität

## Description

FTP
Security
Edge
IT
Cloud
Wartung
Middleware
Informatik
Db2
z/OS
Optimierung
TCP
TLS
CICS
SSL
Support
Berufsausbildung
Engineering
Automatisierung
Deutsch, * Wartung und Optimierung von TCPIP und VTAM im z/OS-Umfeld (Performance, Security, neue Parameter)

 * Betreuung zentraler Kommunikationsdienste wie FTP, SSH, TN3270, Sysplex Distributor, Netaccess, APPC, IBM Personal Communications
 * Konfiguration und Anpassung von Netzwerken auf dem Mainframe, regelmäßige Optimierung der Anwendungslandschaft
 * 3rd-Level-Support: Analyse, Troubleshooting, Firewall-, Trace- und Monitoring-Unterstützung bei Netzwerk- und Verschlüsselungsproblemen
 * Sicherstellung von Security-Standards (TLS-Level, Ciphersuites, Krypto-Algorithmen), zentrale AT-TLS-Konfiguration für Middleware und Anwendungen


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