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Job Overview:
The Civil Group at Leidos is seeking an experienced Systems Administrator to join our growing team. The ideal candidate will have strong experience managing Windows and Linux servers in a multi-cloud environment. You will be responsible for maintaining and optimizing compute and storage infrastructures, driving automation, and ensuring scalability, flexibility, and regulatory compliance.
Primary Responsibilities:
Systems Administration
Administer Windows Server 2022 and RHEL 8 environments
Perform regular platform upgrades, vulnerability management, troubleshooting, and performance tuning
Automate administrative tasks using native scripting languages
Manage application inventory, administration, and compliance
Deploy infrastructure using Infrastructure-as-Code and DevOps pipelines
Manage SSL certificate lifecycles and associated domain infrastructure
Administer data backups and disaster recovery policies
Active Directory Management
Handle identity lifecycles: onboarding, offboarding, access reviews, and privilege management
Configure and manage Group Policies and Azure EntraID in line with Enterprise Access Models
Network Infrastructure
Implement highly available network architectures in hybrid-cloud environments
Manage IP-based access rules, network address sourcing, and CIDR whitelisting/blacklisting
Collaboration
Work closely with DevSecOps teams to design and implement cloud-native solutions
Maintain thorough documentation of systems and network infrastructure
Support internal training initiatives and manage incident response
Drive cost optimization and operational efficiency across systems
Basic Qualifications:
Bachelor's degree in Computer Science or related field + 4 years of experience (or equivalent experience in lieu of a degree)
Strong proficiency in Windows Server and Linux (RHEL) operating systems
Solid understanding of cybersecurity and server hardening practices
Proficiency in network concepts: DNS, VPN, DHCP, TLS, IP subnetting, and routing
Experience automating infrastructure and administrative tasks
Ability to troubleshoot and resolve technical problems independently
Excellent communication skills - verbal, written, and interpersonal
Strong commitment to continuous learning and development
Must be eligible for Public Trust Clearance
Preferred Qualifications:
Master's degree in Computer Science or a similar field
Certifications such as: Azure Solutions Architect Expert, AWS Solutions Architect Professional, CISSP
Experience with Microsoft Intune, Azure Policy, or Azure EntraID
Date Posted: 07 May 2025
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