> Markdown version of [/jobs/ext/3564270-system-administrator](https://www.wearedevelopers.com/jobs/ext/3564270-system-administrator). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # System Administrator - **Company:** Science Applications International Corporation - **Location:** Colorado Springs, CO, United States - **Salary:** $120,001.0 - $160,000.0 - **Contract:** Permanent contract - **Skills:** Active Directory, Authentication Protocols, Cyber Security, Domain Name System (DNS), Kerberos (Protocol), Lightweight Directory Access Protocols (LDAP), Windows Servers, NIPRNet, NT LAN Manager, Public Key Infrastructure, Windows PowerShell, Security Assertion Markup Language (SAML) - **Published:** October 3, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9213909/system-administrator ## About the Role * Bachelors and two (2) years or more experience or Masters and 0 years related experience. * Active DoD Top Secret clearance * Active DoD 8570.01 - M/8140 IAT Level II certification (e.g., Security+ CE, CySA+, etc.) is required prior to start * Expert-level knowledge of Microsoft Windows Server, Active Directory Domain Services (AD DS), Domain Name System (DNS), and Group Policy (GP) management. * Experience implementing and managing Active Directory Certificate Services (AD CS) to support a large-scale Public Key Infrastructure (PKI). * Strong understanding of authentication mechanisms (Kerberos, LDAP, NTLM) and experience with advanced troubleshooting. * Experience implementing Public Key Infrastructure (PKI) with Active Directory. * Knowledge of Security Assertion Markup Language (SAML). * Excellent analytical skills and a proven track record in developing and implementing innovative solutions to complex problems. * Experience working in a multi-tenant or large enterprise server environment. * Skilled in scripting and automation using PowerShell to improve and standardize system management. ## Description SAIC is currently seeking a motivated and experienced System Administrator to join our team at the Pentagon in Arlington, VA. Shift Schedule: Monday-Friday, 6:00 AM to 6:00 PM core hours with occasional after - hours onsite work to support a NIPR and SIPR environment. Responsibilities: * Manage currently supported and subsequent Windows Server Operating Systems on virtual operating environments, providing technical oversight and consultation services. * Perform complex system administration and security engineering efforts, STIG remediation, advanced GPO implementation and system upgrades. * Research and resolve performance, capacity, and other server - related issues. * Provide mentorship and guidance to junior systems administrators and other IT staff. * Improve efficiencies by documenting and standardizing support processes while capturing and developing best practices. * Provide support for the escalation and communication of statuses to leadership to include the government customer. * Maintain and update Server STIG (Security Technical Implementation Guide) requirements to comply with DISA standards. * Ability to remain flexible and adapt to changing priorities with efficiency. * Adhere to change management guidelines by writing Change Requests and seeking the necessary approvals. * Support operational transition of enterprise solutions into production. ## Related Videos - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Thinking Differently - How to Make Money from Cyber Attacks & Cheats](https://www.wearedevelopers.com/videos/745-thinking-differently-how-to-make-money-from-cyber-attacks-cheats) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Cyber Security: Small, and Large!](https://www.wearedevelopers.com/videos/259-cyber-security-small-and-large) - [Outsmarting the System: What Game Cheaters Can Teach Us About Cyber Security](https://www.wearedevelopers.com/videos/1396-outsmarting-the-system-what-game-cheaters-can-teach-us-about-cyber-security) - [Hacking MSSQL on Cloud. All of them. How I became sysadmin on Azure, AWS, GCP and Alibaba.](https://www.wearedevelopers.com/videos/100339-hacking-mssql-on-cloud-all-of-them-how-i-became-sysadmin-on-azure-aws-gcp-and-alibaba) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [Events like RSAC Get You CISOs. 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