> Markdown version of [/jobs/ext/2710476-senior-linux-system-administrator](https://www.wearedevelopers.com/jobs/ext/2710476-senior-linux-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). --- # Senior Linux System Administrator - **Company:** ASEC Inc - **Location:** Patuxent River, MD, United States (Remote available) - **Experience:** Expert - **Salary:** $135,000.0 - $155,000.0 - **Contract:** Permanent contract - **Skills:** Confluence, JIRA, Configuration Management, Cyber Security, Information Systems, Linux, DevOps, VMware ESX Servers, Windows Servers, Red Hat Enterprise Linux, Ansible, Software Engineering, Data Logging, System Availability, Information Technology, SolarWinds (Software), Vulnerability Analysis, Vmware - **Published:** September 4, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9144718/senior-linux-system-administrator ## About the Role * 7 years of experience as a system administrator/IT technician supporting DoD classified networks is required. A bachelor's degree in a STEM related area of study may be considered in lieu of the full 7 years of experience. * Must have a deep level of knowledge and experience with Red Hat Enterprise Linux (RHEL). * Demonstrated experience with Confluence and Jira, required. * Familiarity with SolarWinds monitoring and auditing tools, preferred. * Familiarity with the Red Hat Ansible Automation Platform, preferred. Certification Requirements: * Qualified candidates will have the MS Certified Solutions Associate (Windows Server 2016 or later), Red Hat Certified System Administrator, or VMware Certified Professional and one of the following industry certifications: SecurityX/CASP+, CCNA, CCNP Security, CCSP, GCED, GCIA, GCLD, GDSA, GFACT. * A master's degree or Ph.D. in Engineering, Cybersecurity, Data Science, Information Systems or Information Technology, or Software Engineering may be considered in lieu of one of the listed certifications, however Security+ will be required. If you are unsure if you qualify based on the above information, we get it! Please go ahead and apply anyway, we are happy to review your credentials. Please upload copies of any relevant certifications as part of your application. Equally Important: * Ability to build positive, collaborative relationships across teams and with external partners. * Effective communicator with strong verbal and written skills. * Proactive, self-directed work style with the ability to operate independently. * Analytical thinker with proven problem-solving capabilities. * Highly organized, with the ability to balance competing priorities in a fast-paced environment. ## Description As the Senior Linux System Administrator, you will be responsible for ensuring secure configurations, producing accreditation artifacts, and maintaining hardened baselines, all with a focus on reliability and long-term system assurance. The ideal candidate is not only technically strong, but also thoughtful, process-oriented, and one who takes a careful, methodical approach to systems management., * Ensuring secure and compliant Linux operating system configurations by applying Defense Information Systems Agency (DISA) Security Technical Implementation Guides (STIGs) to prevent misconfiguration and audit issues. * Managing vulnerability assessments with Assured Compliance Assessment Solution (ACAS) and EvaluateSTIG, producing accreditation artifacts to maintain Authorization to Operate (ATO) compliance and demonstrate security assurance. * Maintaining and securing VMware ESXi hypervisors, including patching and hardening host systems to ensure platform reliability. * Automating all routine administrative tasks - including provisioning, configuration management, patching, compliance checks, and reporting - using Red Hat Ansible Automation Platform, improving consistency and reducing manual error. * Applying Red Hat Enterprise Linux (RHEL) updates on a monthly basis to maintain a secure, up-to-date environment. * Refining processes to align with policy, reduce overhead, and collaborating with DevOps and security teams to support modern automation practices. * Releasing RHEL hardened system templates on a quarterly basis with required documentation and ATO submission, ensuring standardized and compliant deployments. * Monitoring Linux and ESXi environments for performance, availability, and security issues to sustain system health and resilience. * Supporting Risk Management Framework (RMF) compliance (FISMA, NIST 800-53, DoD SRG), ensuring alignment with policy and accreditation requirements. * Maintaining accurate technical documentation in Confluence and using Jira Software for task tracking, ensuring procedural clarity and reducing knowledge gaps. * Operating and maintaining SolarWinds monitoring and auditing tools to proactively detect anomalies and maintain system integrity. This description outlines the general nature and scope of the role. Additional duties may be assigned as necessary., ASEC also complies with all applicable pay transparency laws and will not discriminate against employees or applicants for inquiring about, discussing, or disclosing compensation. By clicking "Accept All Cookies", you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. Cookies Settings Accept All Cookies Privacy Preference Center When you visit any website, it may store or retrieve information on your browser, mostly in the form of cookies. This information might be about you, your preferences or your device and is mostly used to make the site work as you expect it to. The information does not usually directly identify you, but it can give you a more personalized web experience. Because we respect your right to privacy, you can choose not to allow some types of cookies. Click on the different category headings to find out more and change our default settings. However, blocking some types of cookies may impact your experience of the site and the services we are able to offer. More information Allow All Manage Consent Preferences Targeting Cookies Targeting Cookies These cookies may be set through our site by our advertising partners. They may be used by those companies to build a profile of your interests and show you relevant adverts on other sites. They do not store directly personal information, but are based on uniquely identifying your browser and internet device. If you do not allow these cookies, you will experience less targeted advertising. Strictly Necessary Cookies Always Active These cookies are necessary for the website to function and cannot be switched off in our systems. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. You can set your browser to block or alert you about these cookies, but some parts of the site will not then work. These cookies do not store any personally identifiable information. Performance Cookies Performance Cookies These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance. ## Related Videos - [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) - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [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) ## Related Articles - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Quick guide: How to write a Software Developer CV](https://www.wearedevelopers.com/magazine/37-quick-guide-how-to-write-a-software-developer-cv) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [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)