Linux Middleware Administrator

Kelly; Mason (OH); On-site; USD 100,000 - 130,000; Full time

Job summary

Kelly is seeking a senior Linux systems administrator to manage and optimize enterprise infrastructure. The role requires hands-on expertise with RHEL, Apache HTTP Server, and Red Hat JBoss EAP, along with experience in Java/Jakarta EE applications and debugging deployment pipelines.

You will collaborate with Development, Infrastructure, Networking, and Security teams to diagnose issues across OS, middleware, and databases, and to implement reliable monitoring, logging, and automation using Git,

Qualifications

• 5+ years of Linux systems administration or equivalent enterprise infrastructure experience.
• Strong hands-on experience with Red Hat Enterprise Linux (RHEL) or comparable Linux distributions.
• Experience administering and troubleshooting Apache HTTP Server.
• Experience administering and troubleshooting Red Hat JBoss EAP.
• Working knowledge of Java/Jakarta EE applications, including the ability to interpret application logs, stack traces, JVM errors, and basic Java code.

Skills

Linux systems administration

RHEL

Apache HTTP Server

JBoss EAP

Java/Jakarta EE

Git

CI/CD

Networking fundamentals

Troubleshooting

Documentation

Tools

Jira

GitLab

Jenkins

Ansible

Dynatrace

Splunk

F5 BIG-IP

Job description

• 5+ years of Linux systems administration or equivalent enterprise infrastructure experience.
• Strong hands-on experience with Red Hat Enterprise Linux (RHEL) or comparable Linux distributions.
• Experience administering and troubleshooting Apache HTTP Server.
• Experience administering and troubleshooting Red Hat JBoss EAP.
• Working knowledge of Java/Jakarta EE applications, including the ability to interpret application logs, stack traces, JVM errors, and basic Java code.
• Experience troubleshooting application builds and deployments.
• Understanding of Git, CI/CD pipelines, and automated build/deployment processes.
• Strong networking fundamentals and the ability to translate application requirements into well-defined network requests.
• Experience troubleshooting complex issues that span application, middleware, operating system, database connectivity, and network layers.
• Strong communication and documentation skills with the ability to collaborate across Development, Infrastructure, Network, Security, and Operations teams.

Preferred Qualifications

• Experience with Jira for incident, change, problem, and work tracking.
• Experience with GitLab, Jenkins, Ansible, or similar CI/CD and automation technologies.
• Experience supporting highly available, business-critical enterprise applications.
• Familiarity with load-balancing technologies such as F5 BIG-IP.
• Experience with monitoring/APM platforms such as Dynatrace, Splunk, or similar tools.
• Experience supporting applications that integrate with Oracle databases.
• Basic scripting experience with Bash, Python, or similar technologies.
• Prior hands-on application development experience (even small) particularly with Java-based enterprise applications, is a plus and will be valuable when troubleshooting application, build, deployment, and runtime issues.
• Strong troubleshooting and root-cause-analysis skills
• Ability to troubleshoot across the application, middleware, OS, and network stack
• Comfortable reviewing application code without requiring a software developer background
• Strong ownership and follow-through
• Ability to work effectively during production incidents and high-priority deployments
• Strong cross-functional communication skills
• Ability to translate technical requirements between Development and Infrastructure teams