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Linux System Administrator with Security Clearance

Set of XAnnapolis Junction, MD🇺🇸United StatesPosted 16 Jul 2026

Quick Overview

Work Type
Hybrid
Schedule
Employee
Level
Mid Senior

Job Description

WE ARE HIRING OWNERS
Set of X is led by industry veterans who see government contracting as a good community with plenty of opportunity to go around. With a shared desire to give back, grow the community, and do great work, the Set of X team is building an elite group of engineers with a strong sense of shared responsibility and ownership Because who you work with matters.
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The candidate will participate in a new long-term effort to consolidate a diverse set of systems into a new cohesive solution that improves system manageability and security, while providing enhanced capability with a strong focus on improved user experience. The candidate will be a part of the early stages of this high visibility effort and help build a sound foundation to ensure the project’s continued success. Responsibilities: * Work with current owners and administrators to understand existing systems, requirements, and problem areas.
* Provide direct input for organization long-term efforts and visions for future architecture and design.
* Provide system administration functions to fix critical problems or implement stop-gap solutions as part of the transition to the new consolidated architecture.
* Translate existing requirements and use-cases of current systems into scalable and supportable long-term solutions.
* Implement and support final solution(s).
* Participate in frequent internal engineering and strategy team meetings.
* Build direct customer relationships to improve organizational feedback loop.
Required Skills:
* Extensive RedHat (RHEL), CentOs Linux, and/or UNIX experience.
* Experience managing NiFi data flows.
* Experience with VMWare or associate technologies (ESX, NSX, VSAN, KVM, Nutanix or other).
* Ansible or other automation platform/methodology experience.
* System scanning/hardening – STIGS/CIS Compliance.
* Proficiency installing, hardening, patching, and backup/restoration of Linux systems.
* Understanding of system monitoring, health/status, and best practice security methodologies.
* Familiarity with Windows Server environments
Desired Skills:
* Docker, Kubernetes, and AWS familiarity.
* Understanding of Active Directory or FreeIPA.
* Familiarity with nginx, HAProxy, or other load balancer technologies.
* Python experience.
* Familiarity with Git/GitLab.
* Storage Technology experience including hyper converged, SAN, or IP based storage.
* Past experience supporting managed attribution programs.
* RHCSA (Red Hat Certified System Administrator) and/or RHCE (Red Hat Certified Engineer) certification. Experience/Education:
9 yrs. experience in System Administration Clearance:
TS/SCI clearance with polygraph is required.
 
Total Compensation Package  We offer a comprehensive compensation package designed to support your well-being and professional growth. Our competitive base salary is complemented by an extensive benefits program, including:  * Health, Dental, and Vision Insurance: Comprehensive coverage to keep you and your family healthy.
* Life and Disability Insurance: Peace of mind with financial protection for you and your loved ones. 
* 401(k) Plan: No personal investment required to benefit from a generous employer contribution, allowing you to maximize your take-home pay. 
* Paid Time Off: Enjoy time away from work to recharge. 
* Technology Refresh: Upgrade your devices regularly, or opt for a year-end bonus if you don’t need new tech. 
* Training and Professional Development: A $5,250 annual budget for ongoing education, certifications, and professional memberships.   Or use this annual benefit to repay a student loan tax-free. 
For a full overview of our benefits, please visit our benefits tab.  Additional Perks and Benefits  * Stock Plan: Become an equity owner with a yearly stock grant—let’s build the future together. 
* Flex Leave and Exchange Plan: Take up to 8 weeks off for a strong work-life balance or sell back unused time for double the value! 
* Virtual Office Compensation: Monthly reimbursement for cell phone and internet services. 
* Fringe Benefit Mall: Choose from perks like Uber rides, a beer of the month club, Amazon Prime, and Hello Fresh—whatever suits you best! 
* Profit-Sharing Cash Bonus: Share in the company’s success with an end-of-year cash bonus. 
* Referral Bonus: Help us grow by bringing in top talent and earn a bonus for each successful referral.

Skills

Docker
AWS
Nginx
Active Directory
Ansible
Git
HAProxy
Kubernetes
Python
VMware

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