Senior Linux & Middleware Administrator (RHEL, CI/CD)

Diversity Nexus; Mason (OH); Vor Ort; USD 90.000 - 120.000; Vollzeit

Zusammenfassung

Diversity Nexus in Mason, OH is seeking a Senior Linux/Java Systems Engineer to administer and optimize Linux environments (RHEL), deploy and troubleshoot Apache HTTP Server, Docker, NGINX, and JBoss EAP. You will work with development teams to diagnose JVM, middleware, and infrastructure issues and support CI/CD pipelines across dev, test, and production.

You should have strong experience in networking, SSL/TLS, and application connectivity, plus the ability to review logs, JVM memory, and

Qualifikationen

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Aufgaben

• Administer, maintain, patch, monitor, and troubleshoot Linux environments, preferably RHEL.
• Install, configure, maintain, and troubleshoot Apache HTTP Server, Docker, NGINX, and Red Hat JBoss EAP.
• Support JBoss configurations including JVM settings, application deployments, data sources, certificates, logging, clustering, and environment-specific configuration.
• Analyze system and application logs to identify performance, configuration, connectivity, and availability issues.
• Support SSL/TLS certificates, keystores, truststores, and related application connectivity.
• Possess a working knowledge of Java/Jakarta EE applications and be able to review Java code, stack traces, configuration files, and logs to assist with troubleshooting.
• Work closely with development teams to diagnose application, JVM, middleware, and infrastructure-related problems.
• Troubleshoot issues involving JVM memory, threads, garbage collection, connection pools, application dependencies, and service integrations.
• Support and troubleshoot application build and deployment processes across development, test, and production environments.
• Assist in diagnosing failed builds, deployment failures, configuration issues, dependency problems, permissions, and environment differences.
• Understand modern CI/CD concepts, Git-based source control, build pipelines, and release processes.
• Partner with Development and DevOps teams to improve deployment reliability and reduce manual intervention.
• Possess a solid understanding of networking concepts including TCP/IP, DNS, routing, firewalls, ports, load balancing, SSL/TLS, NAT, and network connectivity.
• Understand VIPs, load balancers, firewall rules, and site-to-site (S2S) VPNs well enough to identify requirements and submit accurate network requests.
• Troubleshoot application connectivity using tools such as curl, openssl, nslookup/dig, traceroute, netstat/ss, and related Linux utilities.
• Partner effectively with Network and Security teams to diagnose connectivity issues and implement infrastructure changes.

Kenntnisse

Linux admin

RHEL

Apache

JBoss EAP

Java/Jakarta EE

Git/CI-CD

Networking basics

Troubleshooting

Documentation

Collaboration

Tools

Docker

NGINX

Jenkins

Ansible

GitLab

Dynatrace

Splunk

Jobbeschreibung

Diversity Nexus in Mason, OH is seeking a Senior Linux/Java Systems Engineer to administer and optimize Linux environments (RHEL), deploy and troubleshoot Apache HTTP Server, Docker, NGINX, and JBoss EAP. You will work with development teams to diagnose JVM, middleware, and infrastructure issues and support CI/CD pipelines across dev, test, and production.

You should have strong experience in networking, SSL/TLS, and application connectivity, plus the ability to review logs, JVM memory, and