Systems Administrator

Overview

Systems Administrator

San Antonio, TX

Are you ready to enhance your skills and build your career in a rapidly evolving business climate? Are you looking for a career where professional development is embedded in your employer’s core culture? If so, Chenega Military, Intelligence & Operations Support (MIOS) could be the place for you! Join our team of professionals who support large-scale government operations by leveraging cutting-edge technology and take your career to the next level!

We deliver essential technology services to our customers in support of their missions to sustain the national security and economic interest of our nation. Securi Gence is seeking a talented Systems Administrator to help contribute to our success. Come help us solve problems with Innovation through Intelligence.

• Lead the administration, maintenance, and optimization of enterprise Windows and Linux server environments.
• Administer, maintain, configure, and optimize enterprise Linux server environments, with a primary focus on Red Hat Enterprise Linux (RHEL) and Ubuntu, while supporting Windows Server environments as required.
• Install, configure, harden, maintain, and troubleshoot RHEL, Ubuntu, and Windows Server operating systems across physical and virtual enterprise environments.
• Perform Linux system administration activities including user and group management, file systems, permissions, services, processes, storage, networking, package management, repositories, logging, and system resource management.
• Manage system services and configurations using Linux administration tools and technologies including system, SSH, RPM/YUM/DNF, APT, LVM, and related enterprise Linux utilities.
• Perform system performance analysis, capacity planning, resource management, and troubleshooting to ensure infrastructure availability, scalability, and reliability.
• Deploy, administer, and maintain virtualized server environments utilizing VMware technologies.
• Support system architecture, operating system upgrades, migrations, technology refreshes, and infrastructure modernization initiatives.
• Troubleshoot and resolve complex Linux, Windows, virtualization, infrastructure, and application-related issues across enterprise environments.
• Plan, test, and deploy operating system, application, firmware, and security patches while minimizing operational impact and maintaining system availability.
• Perform vulnerability remediation and system-hardening activities for Linux and Windows systems in accordance with DISA STIGs, DoD cybersecurity requirements, and organizational cybersecurity policies.
• Review vulnerability and compliance findings and remediate identified vulnerabilities, misconfigurations, and security deficiencies.
• Monitor enterprise servers and supporting infrastructure to identify performance, capacity, availability, and security issues and maintain operational readiness.
• Develop, implement, and maintain backup, recovery, business continuity, and disaster recovery capabilities for enterprise systems.
• Automate system administration, configuration management, patching, compliance, and operational tasks using Bash, Ansible, Power Shell, and other scripting or automation technologies.
• Develop and maintain Ansible playbooks, scripts, and standardized configurations to improve consistency, repeatability, security, and operational efficiency across server environments.
• Administer and support Windows Server systems, including Active Directory-integrated services, Group Policy, Power Shell-based administration, patching, system hardening, and troubleshooting.
• Develop and maintain system administration standards, build documentation, configuration baselines, standard operating procedures, troubleshooting procedures, and other technical documentation.
• Maintain accurate system configurations, inventories, operational documentation, and technical records in support of configuration management and cybersecurity requirements.
• Provide technical guidance and support to junior system administrators and other technical personnel as needed.
• Collaborate with network, cybersecurity, storage, backup, cloud, database, and application teams to implement, troubleshoot, and maintain integrated enterprise solutions.
• Evaluate infrastructure and automation technologies and recommend improvements that enhance system security, reliability, performance, manageability, and operational efficiency.
• Participate in incident response, system recovery, maintenance windows, and after-hours…