> Markdown version of [/jobs/ext/2937707-systems-administrator-onsite](https://www.wearedevelopers.com/jobs/ext/2937707-systems-administrator-onsite). 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). --- # Systems Administrator (Onsite) - **Company:** RTX - **Location:** Arlington, VA, United States - **Salary:** $95,500.0 - $181,700.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, Antivirus Softwares, Apple Mac Systems, Confluence, JIRA, Unix, Ubuntu (Operating System), CompTIA Security+, Cyber Security, Information Systems, System Configuration, Data Systems, Dynamic Host Configuration Protocol, Linux, Domain Name System (DNS), Hyper-V, Networking Hardware, Python (Programming Language), Windows Servers, Windows PowerShell, Red Hat Enterprise Linux, Shell Script, Virtualization Technology, VMware VSphere, Scripting, Firewalls (Computer Science), Build Management, Atlassian Tools, Nessus, Bitbucket, Routing & Switching, Splunk, Scap Compliance Checker, Cisco, Vulnerability Analysis - **Published:** September 16, 2026 - **Apply:** https://globalhr.wd5.myworkdayjobs.com/REC_RTX_Ext_Gateway/job/US-VA-ARLINGTON-111--1300-17Th-St-N--BBN-ARLINGTON/Systems-Administrator--Onsite-_01874624 ## About the Role Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance, The ideal candidate would have experience with system configuration/hardening (specifically to NIST 800-53 and STIG standards), applicable certifications, and some experience with classified US Government networks. You should be able to learn and adapt to new technologies quickly and effectively. Flexibility and attention to detail is essential to this teams' success., * Typically requires a University Degree and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience or in absence of a degree, 9 years of relevant experience. * Ability to access U.S. only data systems. * Active and transferable Top Secret U.S. government issued security clearance is required prior to start date. * CompTIA Security+ CE certification or other equivalent which meets DoD 8570 IAT Level II requirements. * Experience with several of the following tools: STIG Viewer, SCAP Compliance Checker, EvaluateSTIG, Splunk, Nessus. * Experience with NIST 800-53 and NIST 800-171 standards and the Risk Management Framework (RMF). * Experience with networking essentials including common ports & protocols, DHCP, DNS, switching/routing, firewalls, etc.... * Experience with Windows operating systems (e.g. Windows 10/11, Windows Server 2022 and newer). * Experience with Linux operating systems (e.g. RedHat Enterprise, Ubuntu, etc…). Qualifications That We Prefer * Experience with additional operating systems (e.g., macOS, Unix, etc…). * Experience setting up and managing Microsoft Active Directory environments. * Experience with Virtualization (e.g. VMWare vSphere, Hyper-V, etc…). * Cisco certification or experience with configuring and maintaining Cisco switching/routing/firewall products. * Relevant experience with classified U.S. Government networks. * Familiarity with the use of Atlassian software products (e.g., Jira, Confluence, Bit Bucket). * Experience with scripting languages (e.g., Linux/Unix shell scripting, Python, Windows PowerShell, etc…). * Ability to perform system builds and upgrades, product installation and maintenance. * Ability to troubleshoot and solve complex technical problems., * A strong leadership team well-versed in government and Cybersecurity. * A collaborative and organized environment to help foster better understanding of Cybersecurity requirements, guidance, and approvals process. * Technically competent pool of Cyber/IT team who are willing to mentor, listen, and help you refine your Cybersecurity vision and goals. * Access to opportunities that help transition and apply security analysis during the lifecycle of systems through RTX. ## Description * Work with our Cyber Security team to ensure that information systems conform to customer specification (NIST and RMF requirements). * Work with team members to propose, design, purchase, and implement technical solutions to customer requirements. * Perform regular information systems maintenance with regards to software updates, hardware refreshes, licensing, and changing requirements. * Diagnose and troubleshoot issues in lab environments including but not limited to Active Directory, antivirus software, vulnerability assessments, or network device configuration. * Generate, organize and maintain IT documentation as it relates to lab environments., Whether you're just starting out on your career journey or are an experienced professional, we offer a robust total rewards package with compensation; healthcare, wellness, retirement, and work/life benefits; career development and recognition programs. 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