senior it systems administrator Jobs

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Senior Linux Systems Administrator

Cornerstone Defense

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No location provided

Full-time

Type: Contract Job #3699 Senior Linux Systems Administrator Aurora, CO Active TS/SCI with Poly Compensation Range: $125,000 - $145,000 Company Overview: Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use thei
Posted 25 days ago | Updated 1 hour ago

IT Administrator

TEKsystems c/o Allegis Group

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Victor, New York, USA

Full-time

Description ** Looking for a Sys Admin (L1) or L2/3 Desktop looking to move into Systems Administrator. Job scope has changed slightly where they are looking to experiment with someone "less experienced". personality regarding drive, motivation and eagerness to learn is going to be looked at more highly than overall skillset (still need a solid base of experience within an enterprise environment -3 yrs exp). If candidate is more in the L2/3 Desktop level of experience we will be looking to pay l
Posted 3 days ago | Updated 10 hours ago

Senior Systems Engineer, IT Infrastructure

tax.com

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Remote or Manila, Metro Manila, Philippines

Full-time

Why Ryan? Flexible Work EnvironmentAward-Winning CultureWorld-Class Benefits and CompensationAccelerated Career PathCommunity OutreachMentorship OpportunitiesWellness-Centric Benefits The Senior Systems Engineer demonstrates superb technical competency and time management skills to deliver mission critical infrastructure and ensure the highest levels of availability, performance, and security. Duties and Responsibilities: People: Act as a technical reference for staff on existing and upcoming
Posted 27 days ago | Updated 18 days ago

Manager IT Administrator

Lifespace Communities Inc

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Delray Beach, Florida, USA

Full-time

Community: Abbey Delray South Address: 1717 Homewood Blvd Delray Beach, Florida 33445 Pay Range $33.67-$46.31+ Hourly Live your purpose. Grow your career. Thrive through teamwork. Create meaningful, personalized experiences. At Lifespace, team members are at the center of delivering a purpose driven experience for our residents! We provide an environment where each team member can live their aspirations, developing in their career, making a difference, and being a part of a meaningful mis
Posted 10 days ago | Updated 1 hour ago

Senior Systems Administrator (Linux and Windows)

General Dynamics

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Mary Esther, Florida, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Interim Secret Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Linux, System Administration, Virtual Environments, Virtualization, VMware Certifications: None Experience: 3 + years of related experience ship Required: Yes Job Description: Job Description: Seize your opportunity to make a personal impact as a Senior S
Posted 11 days ago | Updated 1 hour ago

IT Administrator

TEKsystems c/o Allegis Group

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Victor, New York, USA

Full-time

Description: Seeking a System Administrator who will be responsible for ensuring production systems and services are maintained and supported as necessary to support the efficient IT operations of our Customer. This person will provide end user support both onsite and remote where applicable. Monitors all systems and services and take action to ensure optimum performance and reliability. Maintains a Life Cycle Plan for IT assigned systems and services. Implement hardware and software installatio
Posted 3 days ago | Updated 10 hours ago

IT Networking and HW Administrator

Leidos

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Lorton, Virginia, USA

Full-time

Looking for an opportunity to make an impact? At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. The Leidos National Security Sector combines technology-enabled services and mission software capabilities in the area
Posted 11 days ago | Updated 1 hour ago

Senior Systems Security Administrator

Johns Hopkins University AppliedPhysicsLaboratory

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Laurel, Maryland, USA

Full-time

Description Are you interested in creating new IT security capabilities and learning new cybersecurity technologies? Do you want to have a stake in the overall security posture and assessment of the IT infrastructure? If so, we're looking for someone like you to apply and join our team at APL! We are seeking a Senior Systems Security Administrator (SSA) to be part of APL 's Classified IT Services team. We provide technical expertise to meet compliance and security objectives in environments co
Posted 49 days ago | Updated 1 hour ago

IT Asset Administrator

DMI

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Crownsville, Maryland, USA

Full-time

About DMI DMI is a leading provider of digital services and technology solutions, headquartered in Tysons Corner, VA. With a focus on end-to-end managed IT services, including managed mobility, cloud, cybersecurity, network operations, and application development, DMI supports public sector agencies and commercial enterprises around the globe. Recognized as a Top Workplace, DMI is committed to delivering secure, ef?cient, and cost-effective solutions that drive measurable results. Learn more at
Posted 12 days ago | Updated 10 hours ago

Systems Administrator Senior

General Dynamics Information Technology

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Independence, Kansas, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Information Technology (IT) Systems, System Administration, VMware Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Please take this opportunity to join one of GDIT's fastest long-standing growing progra
Posted 32 days ago | Updated 5 hours ago

Systems Administrator Senior

General Dynamics Information Technology

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Independence, Kansas, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Information Technology (IT) Systems, System Administration, VMware Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Please take this opportunity to join one of GDIT's fastest long-standing growing program
Posted 32 days ago | Updated 11 hours ago

Linux Systems Administrator, Sr / Onsite: Huntsville, AL

Lockheed Martin Corporation

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Huntsville, Alabama, USA

Full-time

Job Description Our employees are the core of everything we do, and they are helping the future arrive. As a leading technology innovation company, our team of over 100,000 employees work with our partners around the world to bring the latest technology to our customers' toughest challenges. Headquartered in Bethesda, Maryland, US, Lockheed Martin has employees based in all 50 states and more than 570 facilities that span 70 countries. Lockheed Martin Enterprise Operations (EO) is actively see
Posted 30 days ago | Updated 1 hour ago

Manager, IT/Senior Systems Analyst

Thermo Fisher Scientific

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Massachusetts, USA

Full-time

Work Schedule Standard (Mon-Fri) Environmental Conditions Office Job Description COMPANY: Thermo Fisher Scientific Inc. LOCATION: 168 Third Avenue, Waltham, MA 02451 TITLE: Manager, IT/Senior Systems Analyst HOURS: Monday to Friday, 8:00 am to 5:00 pm DUTIES: Support Thermo Fisher's integration of Tracelink (Track and Trace Solution) and Thermo Fisher's downstream partners to ensure Thermo Fisher is compliant with Serialization and Track and Trace requirements and detailing the technical
Posted 17 days ago | Updated 1 hour ago

Senior Systems Administrator - TS/SCI with Poly

Leidos

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Aurora, Colorado, USA

Full-time

Leidos is seeking a highly skilled Senior Systems Administrator to support mission-critical operations across various laboratory environments. This role focuses on acquiring, configuring, and maintaining computer servers, operating systems, networks, and network file systems to address complex mission-specific challenges. The Senior Systems Administrator will work in dynamic lab settings, providing technical expertise, troubleshooting, and support to ensure reliable and secure IT infrastructure
Posted 29 days ago | Updated 1 hour ago

Systems Administrator Senior

General Dynamics

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Hayward, California, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Information Technology (IT) Systems, System Administration, VMware Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Please take this opportunity to join one of GDIT's fastest long-standing growing program
Posted 36 days ago | Updated 1 hour ago

IT Systems Administrator Emergency Essential Shift work

Lockheed Martin Corporation

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Maryland, USA

Full-time

Job Description What We're Doing: Lockheed Martin, Cyber & Intelligence invites you to step up to one of today's most daunting challenges: the use of advanced electronics to undermine our way of life. As a cyber security professional at Lockheed Martin, you'll protect the networks that our citizens and the world depend upon each minute: Financial assets. Healthcare information. Critical infrastructure. Hazardous materials. The uninterrupted flow of energy that keeps modern life moving. Here, yo
Posted 60+ days ago | Updated 1 hour ago

IT Analyst / Systems Administrator

Modern Technology Solutions

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Fort Belvoir, Virginia, USA

Full-time

Overview Own Your Future. Modern Technology Solutions, Inc. (MTSI) is seeking a IT Analyst/Systems Administrator in Ft. Belvoir, Va. Why is MTSI known as a Great Place to Work? Interesting Work: Our co-workers support some of the most important and critical programs to our national defense and security. Values: Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the
Posted 60+ days ago | Updated 12 days ago

Senior Red Hat Systems Administrator

Harris Corporation

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Anaheim, California, USA

Full-time

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris Technologie
Posted 30 days ago | Updated 1 hour ago

Senior Systems Administrator

Golden Resources. Inc.

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Dallas, Texas, USA

Full-time, Third Party, Contract

Our client is looking for a Senior Systems Administrator who can take initiative and solve problems effectively. This role will oversee and enhance IT infrastructure. This role involves leading technology projects, implementing automation solutions, and supporting the ongoing expansion of our systems. The ideal candidate will help maintain and improve the tools and platforms used by a large user base in a blended cloud and on-premises setup. Top skills you need to have: Experience leading Micro
Easy Apply
Posted 4 days ago | Updated 14 hours ago

Senior Windows Systems Administrator VMWare SME

SAIC

•

Chantilly, Virginia, USA

Full-time

Job ID: 2506329 Location: CHANTILLY, VA, US Date Posted: 2025-06-03 Category: Information Technology Subcategory: IT Systems Engineer 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 is looking for an ambitious Senior Level System Administrator/VMWare SME like you! Candidates will join a fast-paced and growing team of System Administrators in supporting
Posted 40 days ago | Updated 11 hours ago