Applications Administrator for Linux

Mano Lani

9d•$95,000 - $116,000

About The Position

Introduction:Mano Lani LLC is looking for an enthusiastic, well-qualified individual to fill the Linux Applications Administrator position. This role offers the opportunity to work with a diverse and talented group of individuals committed to driving success. Mano Lani is an exceptional industry partner to the Department of Defense (DoD) and a leader in physical and cyber security, IT management, logistics, supply chain management, process improvement and development. The Applications Administrator for Linux provides comprehensive application administration support for all Linux-hosted applications within the Defense Travel Management Office (DTMO) Enterprise Infrastructure. This position is responsible for the full life-cycle management of Government Off-The-Shelf (GOTS) and Commercial Off-The-Shelf (COTS) applications, including installation, testing, deployment, debugging, updating, event logging, and patching. The Applications Administrator for Linux serves as the Subject Matter Expert (SME) to DTMO for all supported Linux applications, providing technical guidance and support to DTMO users and IT managers. Key technologies supported include Red Hat Enterprise Linux, Apache web server, Tomcat application server, LDAP, Oracle Unified Directory, RedHat single sign-on, and Splunk. The position requires monitoring the DTMO Passport website and applications during core business hours (0600 to 2200 Eastern Time, Monday through Friday) and providing on-call support for mission-critical incidents outside of core hours. The Applications Administrator for Linux coordinates closely with DMDC IT System Administrators to resolve infrastructure-related issues, supports disaster recovery testing, participates in Governance Board processes, and applies ITIL best practices for incident management and root cause analysis. Essential Duties and Responsibilities: (Not listed in order of importance; other duties may be assigned) and must be able to perform the following with minimal guidance or supervision: • Install, test, deploy, debug, update, and patch DTMO GOTS and COTS applications on Linux platforms• Troubleshoot application concerns and respond to inquiries from application users• Support logging software that captures security events and feeds into DMDC-approved software• Configure user access and monitor system stability and security through the software development lifecycle• Coordinate with DMDC IT System Administrators to resolve infrastructure-related issues• Perform application maintenance, review error logs, and resolve reported errors• Provide technical support and guidance to DTMO users and IT managers• Support setting up external connections, whitelisting activities, port and protocols, submission requests, and validations• Ensure application and DTMO Passport website monitoring during core hours (0600 to 2200 Eastern Time, Monday through Friday) and on-call basis for mission-critical incidents at all other times• Coordinate with DMDC to develop and maintain technical documents such as network diagrams, standard operating procedures, and ports and protocols lists• Support Governance Board processes including documentation development, change request review, level of effort estimates, impact assessments, and stakeholder coordination• Coordinate with DMDC to support disaster recovery tests to reinstate DTMO Passport website• Restore normal operation after incidents, prepare root cause analysis, and apply ITIL best practices

Requirements

Bachelor’s degree in Information Technology, Computer Science, Information Systems, or a related field. ( Red Hat Linux Certified System Administrator certification can be used in place of a Bachelor’s degree)
Relevant professional experience in Linux systems or application administration may substitute for formal education in some cases.
5+ years of experience in Application Administration
Experience administering Linux-based applications in enterprise or government environments
Strong knowledge of Linux operating systems such as Red Hat Enterprise Linux (RHEL), CentOS, or Ubuntu
Experience with application installation, configuration, patching, and lifecycle management
Familiarity with Linux command-line tools, system services, and shell scripting
Experience with system monitoring, performance tuning, and troubleshooting techniques
Knowledge of network services, file systems, and system security practices within Linux environments
Experience supporting change management and system updates in production environments
Ability to diagnose and resolve application issues in coordination with system administrators and developers
Strong analytical and problem-solving skills
Ability to work collaboratively with cross-functional IT teams and federal stakeholders
Experience with Apache web server
Experience with Tomcat application server
Experience with LDAP and Oracle Unified Directory
Experience with Red Hat single sign-on
Experience with Splunk technology for application management, security, and compliance
Experience with SaaS, PaaS, and cloud platforms
Strong written and verbal communication skills

Nice To Haves

Red Hat Certified System Administrator (RHCSA)
Red Hat Certified Engineer (RHCE)
CompTIA Linux+
CompTIA Security+
ITIL Foundation Certification

Responsibilities

Install, test, deploy, debug, update, and patch DTMO GOTS and COTS applications on Linux platforms
Troubleshoot application concerns and respond to inquiries from application users
Support logging software that captures security events and feeds into DMDC-approved software
Configure user access and monitor system stability and security through the software development lifecycle
Coordinate with DMDC IT System Administrators to resolve infrastructure-related issues
Perform application maintenance, review error logs, and resolve reported errors
Provide technical support and guidance to DTMO users and IT managers
Support setting up external connections, whitelisting activities, port and protocols, submission requests, and validations
Ensure application and DTMO Passport website monitoring during core hours (0600 to 2200 Eastern Time, Monday through Friday) and on-call basis for mission-critical incidents at all other times
Coordinate with DMDC to develop and maintain technical documents such as network diagrams, standard operating procedures, and ports and protocols lists
Support Governance Board processes including documentation development, change request review, level of effort estimates, impact assessments, and stakeholder coordination
Coordinate with DMDC to support disaster recovery tests to reinstate DTMO Passport website
Restore normal operation after incidents, prepare root cause analysis, and apply ITIL best practices