Redhat Linux SA - Senior

At The One 23 Group, our mission is to set the benchmark for excellence in government services. We empower our clients in the Department of War, Intelligence Community, and Federal Civilian sectors to excel with our advanced capabilities. Our dedication lies in fostering a people-first culture, underpinned by steadfast ethical principles. Embracing innovative technologies and process improvements, we are steadfast in our journey toward a future that is both bright and transformative. Our expertise spans Enterprise IT, Mission IT and Cyber. With our global footprint, we place a strong emphasis on nurturing our people and culture, which forms the core of our successful strategies in leadership and financial management. We pride ourselves on our extensive experience and effective approach, ensuring that we lead with both innovation and integrity., The Redhat Linux SA - Senior provides senior-level UNIX/Linux system and server administration support for JSSC Enterprise Services Support under JC32. The position supports Tier II/III operations for UNIX/Linux systems and servers supporting GCCS-J and JPES-related mission environments at the Pentagon and, when required, the COOP location at Site-R. The role performs systems operations, administration, maintenance, troubleshooting, patching, monitoring, backup/recovery coordination, configuration management support, and server operations in accordance with JSSC SOPs, change control requirements, and applicable DoD/DISA security standards., * Provide UNIX/Linux systems operations, administration, and maintenance support for JSSC-supported production, test, and development environments.

• Operate, manage, and maintain Red Hat Linux server environments supporting JSSC Enterprise Services Support mission requirements.
• Perform account management, system resource monitoring, performance tuning, log monitoring, backup/recovery coordination, storage management support, operating system administration, and system troubleshooting.
• Identify, test, upgrade, and install required operating system, COTS, GOTS, security, and IAVA-related patches in accordance with security requirements and approved change control procedures.
• Support server operations and management to maintain maximum availability for JSSC customers and mission users.
• Maintain server operating systems and associated software at versions required by JSSC.
• Engineer, configure, and sustain UNIX/Linux server hardware and software architectures supporting JSSC mission systems.
• Perform non-emergency disruptive maintenance, repairs, and upgrades during non-business hours unless otherwise approved by the Change Advisory Board or Government representative.
• Document, track, update, and resolve incident tickets using the assigned ticketing system in accordance with JSSC SOPs and escalation procedures.
• Support incident, problem, and change management processes aligned with ITIL and JSSC ITSM procedures.
• Maintain technical and systems documentation, including configurations, operating procedures, implementation procedures, maintenance records, test plans, test reports, and operational run-books.
• Maintain daily operational logs documenting significant events affecting system, network, or application service availability.
• Support metrics, trend analysis, and capacity reporting for systems and services.
• Support testing of hardware/software upgrades, security patches, IAVAs, and system changes in virtual or non-production environments prior to implementation.
• Recommend improvements to IT operations support based on industry and ITIL best practices when directed by the Government.
• Coordinate with Government leads, system administrators, database administrators, application teams, security personnel, and external support organizations to resolve technical issues affecting mission systems.

• Minimum of 10 years of relevant experience providing expert support, analysis, research, and technical solutions for complex information technology problems and processes. (ENCORE III Requirement)
• Demonstrated expertise in an information technology subject matter area such as systems administration, information systems architecture, systems integration, communications/network systems management, or related technical disciplines. (ENCORE III Requirement)
• Ability to work with minimal direction, exercise independent technical judgment, and develop technical solutions to complex problems requiring ingenuity, creativity, and broad technical knowledge. (ENCORE III Requirement)
• Active Top Secret clearance with SIPRNet access eligibility required for PWS Task 6.2.3 support. (PWS Requirement)
• U.S. citizenship required for all personnel performing on or supporting the task order. (PWS Requirement)
• DoD IAT Level II certification required for Tier II/III system administration support. (PWS Requirement - Section 14.9)
• Ability to support 12x5 operations with 24x7 on-call response requirements for JC32 Enterprise Services Support. (PWS Requirement)
• Ability to provide required on-call response within two hours of positive notification. (PWS Requirement)
• Ability to support COOP requirements, including relocation to Site-R within 12 hours of positive notification for real-world contingencies and COOP exercises, when designated as an Emergency Relocation Group member. (PWS Requirement), * Experience administering Red Hat Enterprise Linux in classified DoD operational environments. (Organizational / Operational Preference)
• Experience supporting DISA, DoD, or similar command-and-control mission systems. (Organizational / Operational Preference)
• Experience with UNIX/Linux shell scripting, automation, and system administration toolsets. (Organizational / Operational Preference)
• Experience applying DISA STIGs, IAVAs, security patches, and vulnerability remediation actions to Linux server environments. (Organizational / Operational Preference)
• Experience with VMware or other server virtualization platforms. (Organizational / Operational Preference)
• Experience with enterprise monitoring, logging, performance analysis, and capacity planning tools. (Organizational / Operational Preference)
• Experience with backup and recovery processes, storage administration coordination, and disaster recovery support. (Organizational / Operational Preference)
• Experience supporting ITIL-based incident, problem, change, and configuration management processes. (Organizational / Operational Preference)
• Experience developing and maintaining SOPs, operational run-books, technical documentation, and system configuration records. (Organizational / Operational Preference)
• Current Linux+, Security+, CySA+, CCNA Security, GSEC, GICSP, SSCP, or other certification meeting DoD IAT Level II requirements. (Organizational / Operational Preference)