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David Careers

Linux System Administrator

Posted 10 days ago

i3 infotekMason (OH)
Network and Computer Systems AdministratorsComputer Systems Design Services

SENIORITY

Senior

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About the role

Key Responsibilities: Linux & Middleware: Administer RHEL, Apache, NGINX, Docker, and JBoss EAP (JVM settings, clustering, deployments, SSL, logs).Java App Support: Review Java/Jakarta EE code, logs, and stack traces to diagnose JVM, thread, and connection issues with dev teams. Build & Deployment: Troubleshoot build/deployment pipelines, Git workflows, and environment discrepancies. Networking: Use Linux utilities (curl, openssl, netstat) to diagnose connectivity; coordinate firewalls, load balancers, and routing with network/security teams.
Required 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. 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.
Key Competencies:
  • Strong troubleshooting and root-cause-analysis skillsAbility 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 skillsAbility to translate technical requirements between Development and Infrastructure teams

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