Browse Jobs
Browse fresh roles from company career pages, then filter by keyword, location, salary, skills, remote scope, and more. Each listing links back to the employer-controlled apply path when available.
1,521 jobs match your filters
4d
NMMES FEM Systems Administrator | Active Secret clearance
General Dynamics Information Technology
Type of Requisition: Regular Clearance Level Must Currently Possess: Secret Clearance Level Must Be Able to Obtain: Secret Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications: Skills: Backup and Recovery (Software), Computer Bac
USA AL Montgomery
onsiteFull-time
4d
R
Principal Linux Systems Administrator (ONSITE)
RTX
Date Posted: 2026-06-16

 Country: United States of America

 Location: US-NH-PELHAM-PE1 ~ 50 Bush Hill Rd ~ BLDG 1

 Position Role Type: Onsite

 U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. governme
US-NH-PELHAM-PE1 ~ 50 Bush Hill Rd ~ BLDG 1
onsiteFull-time
4d
R
Principal Systems Administrator
RTX
Date Posted: 2026-06-16

 Country: United States of America

 Location: US-TX-MCKINNEY-513WC ~ 2501 W University Dr ~ WING C BLDG

 Position Role Type: Onsite

 U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable
US-TX-MCKINNEY-513WC ~ 2501 W University Dr ~ WING C BLDG
onsiteFull-time
4d
Windows Systems Administrator (Mid-Level)
Hatch
Windows Systems Administrator (Mid-Level) Company: The Boeing Company The Boeing Company’s Specialized Infrastructure Operations Organization is currently seeking a Windows Systems Administrator (Mid-Level) to join the team in Daytona Beach, FL. This position will install, ope
USA - Daytona Beach, FL
onsiteFull-time
4d
N
Sr Principal Linux Systems Administrator - Secret
Northrop Grumman
RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the Time Description At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's l
Boulder, CO, US
remote
4d
N
Windows Systems Administrator 2/3 - Secret
Northrop Grumman
RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the Time Description At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people
Melbourne, FL, US
remote
4d
C
Infrastructure Systems Administrator
CACI
Job Title: Infrastructure Systems Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: Secret Employee Type: Regular Percentage of Travel Required: Up to 25% Type of Travel: Local Anticipated Posting End: 8/31/2026 T
Colorado Springs, CO, US
hybridFull-time
4d
Sr Systems Administrator
ADI Global Distribution
This role is tasked with the support and maintenance of the Office 365 environment configuration, emphasizing SharePoint and OneDrive. The position requires collaboration across cross-functional IT teams to provide comprehensive global support for the Resideo corporate Microsoft
SAN LUIS POTOSÍ, SLP, Mexico
hybrid
4d
Windows Systems Administrator (Associate or Mid-Level)
Millennium Space Systems
Windows Systems Administrator (Associate or Mid-Level) Company: The Boeing Company The Boeing Company’s Specialized Infrastructure Operations Organization is currently seeking a Windows Systems Administrator (Associate or Mid-Level) to join the team in Berkeley, MO. This posit
USA - Berkeley, MO
onsiteFull-time
4d
Windows Systems Administrator (Associate or Mid-Level)
Hatch
Windows Systems Administrator (Associate or Mid-Level) Company: The Boeing Company The Boeing Company’s Specialized Infrastructure Operations Organization is currently seeking a Windows Systems Administrator (Associate or Mid-Level) to join the team in Berkeley, MO. This posit
USA - Berkeley, MO
onsiteFull-time
5d
O
Senior Specialist - D365 Systems Administrator
On
DUTIES: The Senior Specialist - D365 Systems Administration will own the analysis, systems administration, configuration and maintenance of the Microsoft Dynamics 365 platform. Research and perform troubleshooting activities to triage events in a controlled manner, manage batch
New York City
hybridEasy Apply
5d
B
Mid-Level Systems Administrator
Boeing
Mid-Level Systems Administrator Company: The Boeing Company The Boeing Company’s Specialized United States (US) Infrastructure Operations (SUSIO) Organization is currently seeking a highly experienced and detail-oriented Mid-Level Systems Administrator to join the team in Berke
USA - Berkeley, MO
onsiteFull-time
5d
Middleware Engineer - Systems Administrator
Orlando Utilities Commission (OUC - The Reliable One)
Job Purpose: Maintains the integrity, availability, accessibility, and current patch levels of various system applications. Serves as application technical point of contact between the technical team and the business partners both technical and functional) for the identification
Orlando, FL, US
remote
5d
Mid-Level Systems Administrator
Millennium Space Systems
Mid-Level Systems Administrator Company: The Boeing Company The Boeing Company’s Specialized United States (US) Infrastructure Operations (SUSIO) Organization is currently seeking a highly experienced and detail-oriented Mid-Level Systems Administrator to join the team in Berke
USA - Berkeley, MO
onsiteFull-time
5d
Windows Systems Administrator - TS/SCI with Polygraph
General Dynamics Information Technology
Type of Requisition: Pipeline Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications: Skills: Gro
USA MD Annapolis Junction
onsiteFull-time
5d
User Profile Management Systems Administrator - TS/SCI with Polygraph
General Dynamics Information Technology
Type of Requisition: Pipeline Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications: Skills: Pol
USA MD Annapolis Junction
onsiteFull-time
5d
Email Services Systems Administrator - TS/SCI with Polygraph
General Dynamics Information Technology
Type of Requisition: Pipeline Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications: Skills: Ema
USA MD Annapolis Junction
onsiteFull-time
5d
Endpoint Management Systems Administrator - TS/SCI with Polygraph
General Dynamics Information Technology
Type of Requisition: Pipeline Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications: Skills: Enc
USA MD Annapolis Junction
onsiteFull-time
5d
Network Systems Administrator (Azure)
McKesson
McKesson is an impact-driven, Fortune 10 company that touches virtually every aspect of healthcare. We are known for delivering insights, products, and services that make quality care more accessible and affordable. Here, we focus on the health, happiness, and well-being of you a
Irving, TX, USA - 6555 North State Highway 161 (P001)
onsiteFull-time
5d
Mid-Level Systems Administrator
Hatch
Mid-Level Systems Administrator Company: The Boeing Company The Boeing Company’s Specialized United States (US) Infrastructure Operations (SUSIO) Organization is currently seeking a highly experienced and detail-oriented Mid-Level Systems Administrator to join the team in Berke
USA - Berkeley, MO
onsiteFull-time
5d
IT Systems Administrator III
Machine Solutions Inc.
About Us: Barry-Wehmiller is a diversified global supplier of engineering consulting and manufacturing technology for the packaging, corrugating, sheeting and paper-converting industries. By blending people-centric leadership with disciplined operational strategies and purpose
Green Bay, WI
hybridFull-time
5d
Linux Systems Administrator – ACTIVE SECURITY CLEARANCE REQUIRED
Lawrence Livermore National Laboratory
We're looking for a Linux Systems Administrator to provide advanced technical computer infrastructure support for Linux systems in a complex classified and unclassified computing environment. This role serves as a subject matter expert of Linux infrastructure, collaborates with c
Livermore, CA, United States
hybridFull-timeMid-Senior LevelEasy Apply
5d
L
Linux Systems Administrators - All Levels
Leidos
Linux Systems Administrators / Engineers are needed across several Leidos prime programs in our Intelligence Sector’s Cyber & Analytics Business Area (CABA). Our talented team is at the forefront of Security Engineering, Computer Network Operations (CNO), Mission Software, Analyt
Annapolis Junction, MD
hybridFull-time
5d
L
Senior Linux Systems Administrator
Leidos
If you're interested in being a part of an extraordinary mission, working with our customer who runs the DoD’s largest supercomputing centers and operating some of the most powerful supercomputers in the world, we could use your experience and enthusiasm! You will be providing yo
Bay Saint Louis, MS
onsiteFull-time
5d
Information Assurance Systems Administrator
Booz Allen Hamilton
Information Assurance Systems Administrator The Opportunity: Are you looking for an opportunity to combine your technical skills with big picture thinking to make an impact on national security? You understand your customer’s environment and how to develop the right systems for
Leavenworth, KS
onsiteFull-time