> Markdown version of [/jobs/ext/1465718-senior-systems-administrator-engineer-government](https://www.wearedevelopers.com/jobs/ext/1465718-senior-systems-administrator-engineer-government). 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).

---

# Senior Systems Administrator Engineer (Government)

- **Company:** AT&T Inc.
- **Location:** Chantilly, VA, United States
- **Experience:** Expert
- **Salary:** $98,100.0 - $220,000.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Ubuntu (Operating System), CentOS, Cyber Security, Linux, Hyper-V, Identity and Access Management, Kernel-Based Virtual Machine, Windows Servers, Quick EMUlator (QEMU), Red Hat Enterprise Linux, Virtualization Technology, Software Vulnerability Management, IT Architecture, HybridCloud, Build Management, Virtual Computing, Nessus, 3-tier Architectures, Splunk, Multiplatform, SentinelOne Expertise, Servicenow, Vmware
- **Published:** July 28, 2026
- **Apply:** https://www.disabledperson.com/jobs/73881646-senior-systems-administrator-engineer-government

## About the Role

* Bachelor's degree and minimum 5 years of relevant experience in Security operations of systems supporting: Virtualization, Windows and Linux Computing solution engineering and architecture solutions
 * Experience with on-premise, cloud and hybrid-cloud based deployments.
 * US citizenship is required.
 * Active federal security clearance.
 * Strong written and verbal communication skills.
 * Demonstrated leader with team-oriented interpersonal skills; ability to effectively interface with a broad range of people and roles., * Active Cleared Individual clearance supporting the overall business up to TS/SCI with polygraph.
 * CISSP, virtual computing certifications, (DoDD 8570/ DoDD 8140).
 * Experience with ITSM and/or ServiceNow.
 * Comparable VMware certifications, RHCE, MS Certifications, Security Certifications IAT/IAM levels 1-3.
 * Working knowledge of common operating systems (Windows, Linux, etc.) and basic endpoint security principles.
 * Extensive experience in security operations and systems listed in the posting.

## Description

* Administer and maintain Linux-based operating systems and virtualization platforms, such as Red Hat, CentOS, Ubuntu, VMware, KVM, QEMU/KVM, and Hyper-V.
 * Support Windows server and workstation environments, including standalone systems and enterprise-wide deployments.
 * Provide multi-platform support for OEM appliances and VMware-based Windows and Linux virtual appliances.
 * Mentor junior and mid-level team members on installation procedures, operational best practices, and security-focused administration.
 * Install, configure, operate, and maintain security and analysis tools such as Trellix, SentinelOne, Nessus, Splunk.
 * Perform system patching, vulnerability remediation, and hardening activities for systems and networks.
 * Deliver Tier 1 through Tier 3 technical support and collaborate with Tier 2 support teams as needed
 * Produce and maintain operational and technical documentation, including OPS policies/instructions, CONOPS, SECOPS, and system build documents.
 * Assist with the implementation, integration, and rollout of new IT solutions and technologies.
 * Provide technical support for security compliance efforts and system accreditation processes.

Required Clearance: Top Secret/SCI with polygraph. (#ts/sci) (#polygraph)


## Related Videos

- [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure)
- [WebAssembly: The Next Frontier of Cloud Computing](https://www.wearedevelopers.com/videos/972-webassembly-the-next-frontier-of-cloud-computing)
- [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker)
- [Generating code with Angular schematics](https://www.wearedevelopers.com/videos/129-generating-code-with-angular-schematics)
- [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker)
- [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers)

## Related Articles

- [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology)
- [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking)
- [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)
- [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries)
- [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers)
- [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers)