Systems Administrator/Helpdesk Engineer in Saint Charles

Do you enjoy solving technical challenges, keeping mission-critical systems running at peak performance, and delivering exceptional customer support? Leidos is seeking a Mid-Level Systems Administrator / Helpdesk Engineer to join the Chinook Program supporting an Intelligence Community customer. This is an exciting opportunity to work on a high-impact program where your technical expertise directly enables security missions., n \n

• Provide Tier 1 and Tier 2 helpdesk support for users, resolving hardware, software, network, and system-related issues in a timely manner. \n

• Install, configure, maintain, and troubleshoot Windows and Linux workstations and servers. \n

• Manage user accounts, permissions, and access controls using Active Directory and related management tools. \n

• Monitor system performance, identify issues proactively, and implement corrective actions to maintain system availability. \n

• Install software updates, security patches, and operating system upgrades in accordance with program and customer requirements. \n

• Document incidents, service requests, troubleshooting procedures, and system changes using established ticketing systems. \n

• Collaborate with systems engineers, cybersecurity personnel, and network administrators to resolve complex technical issues. \n

• Support system backups, disaster recovery activities, and configuration management processes. \n

• Assist with workstation deployments, hardware refreshes, asset management, and inventory tracking. \n

• Participate in on-call support and scheduled maintenance activities as required. \n

• Oversee and maintain automation scripts and infrastructure as code (Ansible, PowerShell, Bash, etc.). \n

• Maintain system documentation, configuration baselines, and support CM and RM activities. \n

• Participate in security audits, incident response, and operational readiness activities. \n

• Contribute to continuous process improvements that enhance customer experience and operational efficiency \n

Active Top Secret/SCI with the ability to successfully pass a Polygraph examination., * Bachelor's degree in Computer Science, Engineering, Information Technology, or related discipline and 4-8 years of prior relevant experience or Master's with 2-6 years of prior relevant experience. \n

• DoD 8570 IAT Level II or III certification (e.g., Security+ CE, CASP+, CISSP). \n

• Experience with cloud platforms (AWS GovCloud, Azure Government) and hybrid cloud environments. \n

• Experience with Linux (Red Hat Enterprise Linux or CentOS) and Windows Server platform system administration. \n

• Experience with virtualization platforms (VMware, KVM) and management tools. \n

• Experience with automation and scripting (Ansible, Bash, PowerShell, Python). \n

• Familiarity with STIG compliance, system hardening, ACAS scans, and RMF processes. \n

• Strong understanding of enterprise networking, /access management, and storage concepts. \n

• Proven ability to troubleshoot, document, and lead systems-related projects independently. \n

• Experience supporting IC or DoD classified environments. \n, * Experience supporting an Intelligence Community customer or GEOINT missions. \n

• Familiarity with DevOps tools and pipelines (Git, Jenkins, Docker, etc.). \n

• Knowledge of enterprise backup solutions, DNS, DHCP, Active Directory, and PKI. \n

• Strong troubleshooting and root cause analysis abilities. \n

• Ability to work independently while collaborating effectively across technical teams. \n

• Strong organizational skills with attention to detail and documentation. \n

• Adaptability and willingness to learn new technologies in a dynamic environment. \n

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.