Applications Administrator for Linux

Overview

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, listing 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

Responsibilities

Qualifications: To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill and ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Education:

Required

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.

Preferred

Red Hat Certified System Administrator (RHCSA)

Red Hat Certified Engineer (RHCE)

CompTIA Linux+

CompTIA Security+

ITIL Foundation Certification

Experience / Certifications

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

Please note: Mano Lani LLC reserves the right to change or modify job duties and assignments at any time. The above job description is not all encompassing. Positions functions and qualifications may vary depending on business needs.

Mano Lani LLC is an equal opportunity employer and does not discriminate against applicants based on race, color, creed, religion, medical condition, legally protected genetic information, national origin, sex (including pregnancy, childbirth or related medical condition), sexual orientation, gender identity and expression, age, disability, or Vietnam era, or other eligible veteran status or legally protected characteristics.

Posted Salary Range

USD $110,000.00 - USD $120,000.00 /Yr.