Linux System Administrator

Job Description

Job Title: Linux & Middleware Administrator

Location: Mason, OH (Hybrid – 3 days onsite)

Start Date: Immediate

Contract Duration: Through December 31, 2026 (Extension in process for 2027)

Work Arrangement: Hybrid

Job Summary

We are looking for an experienced Linux & Middleware Administrator to manage, maintain, and troubleshoot enterprise Linux environments and Java-based applications. The ideal candidate will have strong hands-on experience with Red Hat Enterprise Linux (RHEL), JBoss EAP, Apache Server, and Java application support .

The role involves supporting middleware configurations, application deployments, production troubleshooting, and infrastructure connectivity while working closely with Development, DevOps, Network, Security, and Operations teams.

Key Responsibilities

Linux & Middleware Administration

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• Administer, maintain, patch, monitor, and troubleshoot Linux servers, preferably RHEL.
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• Install, configure, and support Apache Server, NGINX, Docker, and Red Hat JBoss EAP.
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• Manage JBoss configurations, JVM settings, application deployments, data sources, certificates, logging, and clustering.
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• Analyze system and application logs to identify performance and connectivity issues.
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• Support SSL/TLS certificates, keystores, and truststores.
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Java Application Support

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• Troubleshoot Java/Jakarta EE applications by reviewing application logs, stack traces, configuration files, and basic Java code.
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• Diagnose JVM memory, thread, garbage collection, connection pool, and application dependency issues.
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• Collaborate with development teams to resolve application and middleware-related problems.
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Build & Deployment Support

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• Support application builds and deployments across development, testing, and production environments.
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• Troubleshoot deployment failures, configuration issues, dependencies, and environment differences.
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• Work with Git, CI/CD pipelines, and automated build and deployment processes.
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• Partner with Development and DevOps teams to improve deployment reliability.
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Networking & Infrastructure Support

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• Understand TCP/IP, DNS, routing, firewalls, ports, load balancing, SSL/TLS, NAT, and VPN connectivity.
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• Coordinate network requests involving VIPs, load balancers, firewall rules, and site-to-site VPNs.
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• Troubleshoot connectivity using tools such as curl, openssl, nslookup/dig, traceroute, and Linux networking utilities.
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• Work with Network and Security teams to resolve infrastructure connectivity issues.
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Required Qualifications

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• 5+ years of Linux systems administration or enterprise infrastructure experience.
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• Strong hands-on experience with RHEL or comparable Linux distributions.
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• Experience administering and troubleshooting Apache Server and Red Hat JBoss EAP.
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• Working knowledge of Java/Jakarta EE applications and JVM troubleshooting.
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• Experience supporting application builds, deployments, and production environments.
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• Understanding of Git, CI/CD pipelines, and automated deployment processes.
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• Strong networking fundamentals and application connectivity troubleshooting skills.
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• Ability to troubleshoot across application, middleware, operating system, database connectivity, and network layers.
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• Strong communication, documentation, and problem-solving skills.
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Preferred Qualifications

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• Experience with Jira for incident, change, and problem management.
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• Familiarity with GitLab, Jenkins, Ansible, or similar automation tools.
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• Experience supporting highly available, business-critical applications.
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• Knowledge of F5 BIG-IP load balancers.
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• Experience with Dynatrace, Splunk, or similar monitoring/APM tools.
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• Experience supporting Oracle database integrations.
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• Basic scripting knowledge in Bash, Python, or similar languages.
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• Prior Java application development experience is an advantage.
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Key Competencies

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• Strong troubleshooting and root-cause analysis skills.
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• Ability to work across Linux, middleware, application, and network layers.
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• Ability to review application code and identify technical issues.
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• Strong ownership and follow-through.
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• Ability to support production incidents and high-priority deployments.
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• Effective communication and collaboration across technical teams.
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• Ability to translate application requirements into infrastructure and network requests.
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Thanks & Best Regards,

Praveen Sakibanda

Sr Talent Acquisition Specialist

View email address on ziprecruiter.com

View phone number on ziprecruiter.com

Diversity Nexus

4365 Route 1 South Princeton NJ, 08540

Praveen Sakibanda| LinkedIn