Linux Middleware Administrator

Linux Middleware Administrator to support business-critical Java enterprise applications. You'll manage Red Hat Linux servers and the middleware layer (JBoss EAP, Apache, NGINX, Docker), and troubleshoot issues across applications, servers and the network.

• Administer, patch, monitor and troubleshoot Red Hat Enterprise Linux servers
• Install, configure and support JBoss EAP, Apache HTTP Server, NGINX and Docker
• Manage JBoss settings:
  Java memory and runtime settings, deployments, database connections, certificates, logging and clustering
• Read Java logs, error traces and basic code to help developers find root causes
• Troubleshoot Java runtime issues: memory, threads, memory cleanup (garbage collection) and database connection pools
• Support builds and deployments across dev, test and production; fix failed builds and environment differences
• Manage SSL/TLS certificates and the stores that hold them
• Troubleshoot connectivity (DNS, firewalls, load balancers, VPNs) using curl, openssl, dig, trace route and netstat, and submit accurate network change requests

• 5+ years of Linux systems administration (RHEL preferred)
• Hands-on Red Hat JBoss EAP and Apache HTTP Server administration
• Working knowledge of Java/Jakarta EE applications: logs, stack traces, Java runtime errors and basic code
• Experience troubleshooting builds and deployments;
  Git and CI/CD pipelines
• Strong networking basics: TCP/IP, DNS, routing, firewalls, load balancing, SSL/TLS
• Able to troubleshoot issues that span the application, middleware, OS, database and network
• Strong communication and documentation skills

Jira;
Git Lab, Jenkins or Ansible; F5 BIG-IP;
Dynatrace or Splunk;
Oracle database integration;
Bash or Python scripting; some Java development background.