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Sr Linux Systems Administrator

at Kansas City National Security Campus in Overland Park, Kansas, United States

Job Description

The Kansas City National Security Campus (KCNSC), managed and operated by Honeywell Federal Manufacturing & Technologies, is a premier advanced manufacturing facility that supports the safety, security, reliability and effectiveness of our nation's nuclear deterrent. With nearly 7,000 employees combined in Kansas City, Missouri, and Albuquerque, New Mexico, KCNSC protects our nation and allies by producing trusted national security products and services for the U.S. Department of Energy's National Nuclear Security Administration.

We create innovative solutions to complex national security challenges, and lead with accountability, collaboration and an unwavering dedication to our mission and core values.

Are you ready to do work that matters?
SummaryThe Sr Systems Administrator performs and oversees a variety of functions to ensure IT infrastructure is available, reliable, secure, and stable.  They will apply advanced judgment and analysis in the evaluation, selection, installation, and maintenance of systems software and hardware.  This role will be responsible for monitoring systems and serving as a focal point for support. The Sr Systems Administrator will plan for the future by setting and documenting direction for their specific area of responsibility for the information systems infrastructure is expected.

Duties and Responsibilities
Independent ability to quickly analyze, isolate and diagnose complex problems, recommend remedial actions, and implement resolutions. 
Applies advanced technical methodologies to the computing infrastructure, monitor operating efficiencies, performance tuning and assist in capacity planning. 
Reviews, evaluates and recommends new or upgraded systems software packages and related hardware, based on established standards. 
Develops detailed implementation plans based on the architectural plans and complete implementation. 
Serves as Technical Lead on medium to large enterprise projects according to division standards and requirements. 
Transforms business requirements into technical architecture requirements and design application architectures, which are scalable, robust, and manageable, while balancing the price/performance. 
Works closely and escalates issues directly with vendors to ensure that supporting operating systems are compliant with applications, including required patch levels, hot fixes, and revisions. 
Implements application and database high availability techniques and application/network security concepts. 
You Must Have
5+ years of systems administration experience and 0-2 years of project or technical consultant responsibility. 
Bachelor's degree in the field of Information Systems, Computer Science, or Computer Engineering, with a minimum of 24 semester hours of computer-related courses, or two additional years of direct work experience.
Ability to travel up to 10% of the time  
Ability to work remote, hybrid, or on-site as directed by management and is determined by the needs of the business.
Regular and reliable attendance is an essential function of this job 
United States Citizenship 
Ability to obtain and maintain, if required for position, a U.S. Department of Energy (DOE) security clearance (some positions require additional DOE designations) 
We Value
Advanced knowledge of specific operating systems (Red Hat Enterprise Linux), servers, peripheral devices and workstations. 
Highly skilled in scripting tools (like PowerShell, Puppet, Perl, Python) to support database, web, and application administration. 
Proven ability to mentor peers to better results and identify appropriate training to improve team’s technical bench strength. 
Knowledge and experienced with installation, configuration and administration of enterprise application servers, databases, clustering backup and recovery systems, portals, firewalls, virtual private networks, terminal services, authentication and authorization, collaboration, and load balancing. 
Managed File Transfer/Data transfer technology
Email Gateways
Strong cyber security practices (Hardening/OpSec/STIG/Zero Trust)
This job description/job posting is not all inclusive and other duties may be assigned.

What We Offer

We are focused on attracting, hiring and retaining talented people who power our mission. Our robust total rewards package recognizes performance, fuels development and supports flexibility. Key features include:

Medical, dental and vision insurance

Health Savings Account (HSA)

Industry leading 401(k) match

Generous paid time off

Flexible work schedule

Tuition Reimbursement

Professional Certification & License Programs

Mission driven culture

Click here to learn more about our benefits and culture.

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Job Posting: 13589378

Posted On: Jun 12, 2026

Updated On: Jun 12, 2026

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