system administrator AND security Jobs

61 - 80 of 279 Jobs

System Administrator, SeniorJob Title - System Administrator, Senior

Parsons Services CompanyCompany Name - Parsons Services Company

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Annapolis, Maryland, USA

Full-time

In a world of possibilities, pursue one with endless opportunities. Imagine Next! When it comes to what you want in your career, if you can imagine it, you can do it at Parsons. Imagine a career working with exceptional people sharing a common quest. Imagine a workplace where you can be yourself. Where you can thrive. Where you can find your next, right now. We've got what you're looking for. Job Description: Parsons is the premier national security and critical infrastructure solutions provi

System AdministratorJob Title - System Administrator

KTek ResourcingCompany Name - KTek Resourcing

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Englewood Cliffs, New Jersey, USA

Full-time

Job DescriptionO 365 Exchange Admin/Support Engineer Location: Englewood Cliffs, NJ (Onsite) Contract : 6-12+ months Client: HCL America **Update LinkedIn ID Required Requirements: Min 8-10 Years of experience in O 365 Exchange AdminProvide L3-level support for Exchange Online and hybrid Exchange environments.Proofpoint experience is mustShould have good experience in PowerShell and should be able to develop scripts for bulk operations.Troubleshoot and resolve complex issues related to mail flow

System AdministratorJob Title - System Administrator

LeidosCompany Name - Leidos

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Orlando, Florida, USA

Full-time

Are you an experienced System Administrator looking for your next challenge? Your search ends here! We have an exciting opportunity for you to support several Programs in the Orlando Area. Your expertise will guide the definition, implementation, and delivery of capability focused on Cyber Training systems and Synthetic Environment Generation. You'll have the chance to work with a broad range of systems, providing overall support for various critical systems. Join our team and make a difference

Linux/Windows System AdministratorJob Title - Linux/Windows System Administrator

Lockheed Martin CorporationCompany Name - Lockheed Martin Corporation

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Moorestown, New Jersey, USA

Full-time

Job Description WHAT WE'RE DOING The AEGIS O&M program is seeking a Linux/Windows System Administrator in Moorestown NJ. This facility houses both Navy and Lockheed Martin personnel. It primarily serves as a research and development facility for the AEGIS Combat System. AEGIS is a revolutionary naval air defense system capable of guarding against missile threats from land, sea and air. WHO WE ARE Our current team handles everything from: Periodically travelling to different customer sites ar

System Administrator 1Job Title - System Administrator 1

Realm OneCompany Name - Realm One

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Annapolis, Maryland, USA

Full-time

RealmOne is the GOAT - where your career can reach the greatest heights! RealmOne was built on the principle that people matter first and foremost. We believe in providing a strong work/life balance by investing in our employees and encouraging professional and personal growth. We do this by offering exceptional benefits, flexible schedules, and the tools necessary to achieve success through paid training, mentoring, and the opportunity to work alongside top-notch security professionals. Join u

Linux System AdministratorJob Title - Linux System Administrator

ManTechCompany Name - ManTech

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Fort Meade, Maryland, USA

Full-time

ManTech seeks an experienced and passionate, career and customer-oriented Linux System Administrator to join our team located in the Fort Meade, MD area. Responsibilities include, but are not limited to: Design, engineer, and implement automated hardening scripts for internal servers adding scalability while circumventing manual process for new operating system rollout.Configure host-based intrusion detection systems.Monitor and troubleshoot/examine detected anomalies.Developed automation scrip

Linux System Administrator - Secret Clearance preferred (On-Site)Job Title - Linux System Administrator - Secret Clearance preferred (On-Site)

General DynamicsCompany Name - General Dynamics

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Oakton, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: None Clearance Level Must Be Able to Obtain: Secret Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Linux System Administration & Networking, RedHat, Troubleshooting Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Discover a career that is challenging, impactful, and mission-critical. Join our team as a Linux System Adm

Network Operation Center (NOC) System Administrator - NISSC II - CMSFSJob Title - Network Operation Center (NOC) System Administrator - NISSC II - CMSFS

JacobsCompany Name - Jacobs

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Colorado Springs, Colorado, USA

Full-time

Position Title: Network Operation Center (NOC) System Administrator Location: Cheyenne Mountain Space Force Station, Colorado Springs, CO Relocation Assistance: None available at this time Remote/Telework: NO - Not available for this position Clearance Type: DoD Top Secret w/ SCI Eligibility Shift: Shift work is required to support 24x7 operations. It is important to be available to work any shift/designated hours required including nights, weekends, and holidays on a modified Panama schedu

Sr. System Administrator - VDIJob Title - Sr. System Administrator - VDI

LeidosCompany Name - Leidos

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Odenton, Maryland, USA

Full-time

The Defense group at Leidos has a career opening for a System Administrator on a DISA contract. This role is primarily on the customer site at Ft Meade, MD. Administrator will provide support for assigned systems supporting Joint Worldwide Intelligence Communications System (JWICS). PRIMARY RESPONSIBILITIES: Provide Senior level expertise for Virtual Desktop Infrastructure (VDI) environment.Lead as the Subject Matter Expert on all VDI related issues/needs.Provide support for ticket escalation o

Senior System AdministratorJob Title - Senior System Administrator

Booz Allen HamiltonCompany Name - Booz Allen Hamilton

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Washington, District of Columbia, USA

Full-time

Job Number: R0221564 System Administrator, Senior The Opportunity: Your combination of people skills and te chn ical expertise makes you the team hero, solving one problem after another. What if you could use those skills to improve the te chn ology supporting the Department of Defense ( DoD ) ? We're looking for a systems administrator who spe cia lizes in working within classified environments supporting agencies with a solid background in windows operating systems to help us build and deploy

Human Resources Information System AdministratorJob Title - Human Resources Information System Administrator

Talent XpanseCompany Name - Talent Xpanse

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California, USA

Full-time

Job DescriptionJob Title: Senior HRIS Administrator, People Systems & Optimization (ADP Workforce Now) Location: On-site in Office Are you someone who treats a system as an opportunity to architect solutions for complex problems? Do you believe documentation is a power tool, training is influence, and vendor partnerships are business opportunities? If so, this role may uniquely align with your intrinsic fulfillment and career goals. About the Role: Our client is seeking a Senior HRIS Administrat

System AdministratorJob Title - System Administrator

SAICCompany Name - SAIC

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Fort Meade, Maryland, USA

Full-time

Job ID: 2506155 Location: FORT MEADE, MD, US Date Posted: 2025-06-18 Category: Information Technology Subcategory: Sys Administrator Schedule: Full-time Shift: Day Job Travel: No Minimum Clearance Required: TS/SCI with Poly Clearance Level Must Be Able to Obtain: None Potential for Remote Work: No Description SAIC, a leading provider of systems engineering & integration, systems development & deployment, intelligence analysis and targeting, and training solutions for the Intelligence

Cloud System AdministratorJob Title - Cloud System Administrator

Robert HalfCompany Name - Robert Half

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Lexington, Kentucky, USA

Contract

Description We are looking for a skilled Cloud System Administrator to join our team in Lexington, Kentucky! In this long-term contract role, you will play a pivotal part in maintaining and optimizing our IT infrastructure, with a focus on cloud-based solutions and cybersecurity. This position offers an exciting opportunity to collaborate across departments, implement advanced technologies, and ensure robust system functionality. Responsibilities: Monitor and analyze system performance to ens

Linux System AdministratorJob Title - Linux System Administrator

Zachary Piper Solutions, LLCCompany Name - Zachary Piper Solutions, LLC

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Aberdeen, Maryland, USA

Full-time

Piper Enterprise Solutions is seeking an Linux System Administrator to join a stable and well known team located at Aberdeen Proving Ground. Responsibilities of the Linux System Administrator: Install, configure, and support an organization's local area network (LAN), wide area network (WAN), and Internet systems or a segment of a network system. Monitor network to ensure network availability to all system users and may perform necessary maintenance to support network availability. May monitor

Mid Linux System AdministratorJob Title - Mid Linux System Administrator

Booz Allen HamiltonCompany Name - Booz Allen Hamilton

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Washington, District of Columbia, USA

Full-time

Job Number: R0221402 Linux System Administrator, Mid Key Role: Provide hands-on experience managing Linux-based IT components. Provide network and systems administration support for all cybersecurity systems in the Enterprise. Provide systems administration and engineering support for non-Windows operating systems such as Linux-based systems, including Redhat Enterprise Linux (RHEL). Support the networking administration focused on enterprise infrastructure systems such as Cisco and Cisco ISE,

System AdministratorJob Title - System Administrator

LeidosCompany Name - Leidos

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King of Prussia, Pennsylvania, USA

Full-time

Leidos Office of the Chief Information Security Officer, within the Digital Modernization Sector, is seeking a System Administrator to support various classified environments. You will be responsible for maintaining, securing, and supporting complex classified information systems, as well as ensuring compliance with security protocols and regulations. Work will be performed on site at our King of Prussia, PA office. What will you do in this role? This role includes a combination of duties to pr

Sr. System Administrator - VMwareJob Title - Sr. System Administrator - VMware

LeidosCompany Name - Leidos

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Odenton, Maryland, USA

Full-time

The Defense group at Leidos has a career opening for a System Administration on a DISA contract. This role is primarily on the customer site at Ft Meade, MD. Administrator will provide support for assigned systems supporting Joint Worldwide Intelligence Communications System (JWICS). PRIMARY RESPONSIBILITIES: Provide Senior level expertise for VMware environment.Lead as the Subject Matter Expert on all VMware related issues/needs.Provide support for ticket escalation on major outages.Be able to

System Administrator-Senior LevelJob Title - System Administrator-Senior Level

NightwingCompany Name - Nightwing

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Sterling, Virginia, USA

Full-time

Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to meet our customers' most demanding challenges. Our capabilities include cyber space operations, cyber defense and resiliency, vulnerability research, ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, and software modernization. Nightwing brings disruptive technologies, agility, and competitive offerings to customers in th

System Administrator IV - HPCJob Title - System Administrator IV - HPC

LeidosCompany Name - Leidos

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Saratoga Springs, Utah, USA

Full-time

The Digital Modernization Sector at Leidos currently has an immediate need for an experienced System Administrator - IV HPC for a new customer on a strategic High-Performance Computing (HPC) program. The Senior System Administrator will need to be a self-starter with excellent analytical and problem-solving skills, flexibility, good judgment, and the ability to work within a team to mature the HPC capabilities of our customer. Locations: These positions will be onsite. Candidates need to be loc

System Administrator (Night Shift) (Active Secret Clearance Required with Ability to obtain TS/SCI)Job Title - System Administrator (Night Shift) (Active Secret Clearance Required with Ability to obtain TS/SCI)

Akima, LLCCompany Name - Akima, LLC

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Colorado Springs, Colorado, USA

Full-time

Five Rivers Analytics is looking for a System Administrator to work in Colorado Springs, CO. Administers, develops, runs tests, implements, and maintains operating system and related software. Establishes and implements standards for computer operations for compatibility between hardware and software, according to specifications and parameters. Troubleshoots and resolves software, operating system, and networking problems. Schedules, performs, and monitors system backups and performs data recove