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Linux System Administrator
Linux System Administrator-September 2024
Fort Belvoir
Sep 12, 2025
About Linux System Administrator

  Security Clearance required:

  TS/SCI

  Do you want to make a difference?

  Cognosante employees are passionate about improving people’s lives. With an innovative mindset and an unwavering commitment to those we serve, we partner with healthcare, civilian and defense agencies to deliver exceptional public services and programs. Our multi-faceted technology and customer experience (CX) solutions achieve program outcomes, solve critical challenges and create meaningful change. Whether we are helping Veterans access healthcare faster, ensuring that members of the military complete their missions safely, or helping people obtain health insurance, our work touches millions of people. Are you ready to make a difference?

  Come Join Our Team

  We are seeking a Linux Systems Administrator to work as a member of a team managing and maintaining multiple network enclaves to support the DoD community at Fort Belvoir. The position supports a highly specialized Intelligence agency in support of National Security. The job is located in the Fort Belvoir area, with some local trips to other locations in the National Capital Region. Periodic short-term travel (less than 10%) worldwide may be required.

  What is the position?

  The candidate will provide support to a team developing, maintaining, creating, documenting, and installing network and enclave infrastructure for a broad range of AI/ML datasets, research objectives, applications, and programming requirements. This is a demanding, high-energy position requiring innovative solutions to network, hardware, and software problems.

  What will I get to do?

  The candidate will work with a team to perform software installations, upgrades to operating systems and software packages, and deployment and configuration of Docker containers. The candidate will schedule installations and upgrades and maintain them in accordance with established IT policies and procedures and will monitor and tune the system to achieve optimum performance levels. The candidate will have a strong understanding of the Linux Operating system to include but not limited to scripting, networking, and performance tuning. The candidate will also manage server access for multiple, simultaneous, external vendors i.e., Government, academia, and industry. The candidate must have strong problem-solving skills.

  What qualifications do I need?

  · Must have an active TS/SCI clearance with the ability to pass a CI Poly

  · Bachelor’s Degree or equivalent experience

  · 3+ years of experience with classified environment field engineering & networking

  · DoD 8750 compatible certification (CISSP, Security+)

  · Extensive experience with Linux operating systems. (Ubuntu, RHEL, CentOS, Rocky)

  · Experience with server diagnostic and troubleshooting

  What additional characteristics will help me thrive?

  In-scope CI polygraph

  Understanding of Kubernetes

  Experience with LAN/WAN networking technologies

  Good understanding of high-level network architecture

  Hands on experience with data center equipment (Servers, Switches, PDUs,Firewalls)

  Experience with the following standards/protocols: Ethernet, Fibre Channel, and NFS

  Experience with networking diagnostic, monitoring and analysis tools

  Understanding of NetApp storage systems

  Strong understanding of TCP/IP

  VMware vSphere knowledge

  What We Offer  

  Our mission is to provide comprehensive and competitive pay, benefits, services, and programs to eligible employees and their dependents that: 

  Ensure optimal health and productivity of our employees  

  Support employee retention and attraction 

  Provide work/life balance to ensure our employees succeed inside and outside of the office 

  Compensation

  $74,436.56 - $119,096.32

  The pay range for this job is determined by various factors, including but not necessarily limited to location, responsibilities of the job, and alignment with market data. When determining a salary for this role, the following factors may be taken into consideration - contract-specific affordability, education, knowledge, skills, competencies and experience. The estimate displayed represents the salary range for this position and is just one component of Cognosante’s total compensation package for employees. It is not necessarily reflective of actual compensation that may be earned, nor a promise of any specific pay for any specific employee.

  Cognosante will not provide sponsorship for employment-based immigration benefits for this position.

  What We Promise  

  Cognosante employees are inspired by our bold mission to improve lives. To achieve this mission, we put our people first. No matter where they're located around the nation, our innovative workplaces enable individuals to apply their skills and experience to work toward a greater good.

  We foster a winning culture of solution creators built on innovation, collaboration, flexibility, and work-life balance. And we invest in the next generation of diverse talent to foster an inclusive, progressive, adaptable workplace that prioritizes advancement for all. As an affirmative action employer, we are committed to equal opportunity regardless of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.  

   

  Your safety during your job search is important. Recruiting communications will always be sent through one of the following corporate domain emails (@cognosante.com or @accurate.com).

  We will never send communications through any other domain, including @cognosantecareers.com, @gmail.com or @yahoo.com). We will never request payment from you, nor will we send payment to you, prior to your start date. If you have been asked to send or receive any payment, or if you have any doubt about whether you have been contacted by a Cognosante employee, please contact us at [email protected]

  At Cognosante, we innovate with purpose. Each day, we create meaningful change by delivering mission-driven solutions for healthcare, civilian, and defense government agencies. When you work at Cognosante, you’ll apply your talents and grow your career with an organization that believes in the missions of our customers – and the right every employee has to an inclusive, flexible, and collaborative workplace. Work with us, and you’ll be challenged and supported—and have the platform to elevate your career to wherever your professional aspirations lead.​

  Get to know Cognosante employees

  We’re driven by our customers’ missions, and measure success by how we improve lives.

  We believe innovative solutions start with an innovative culture.

  We believe customer understanding is the key to creating innovative solutions.

  We know we are stronger together, and we value the diversity of our people.

  We believe growth should be a core job benefit.

  Like many other companies, Cognosante has been targeted by scammers making fraudulent job offers to potential candidates. As shared on our company website (https://cognosante.com/careers/) , communications from Cognosante recruiting are only sent with an official corporate domain email (e.g., @cognosante.com) and not a commercial domain e-mail (e.g., @gmail.com or @yahoo.com)). We will never request payment from an applicant, nor will we send payment to an applicant, prior to that individual’s start date.

  We want to recommend a couple of ways that you can report this incident and take action against these scams:

  -The FBI: File a Complaint (https://www.ic3.gov/Home/FileComplaint)

  -The FTC: Report Fraud (https://reportfraud.ftc.gov/#/)

  Also, if you're not sure where to report the scam, you can find some guidance here: Where to report scams | USAGov (https://www.usa.gov/where-report-scams) .

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