Senior IT Systems Administrator Jobs

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Sr. Specialist, Systems Administrator

Harris Corporation

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Melbourne, Florida, 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 7 days ago | Updated 7 hours ago

G2 Senior Systems Administrator | Active Top Secret clearance

General Dynamics

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Remote

Full-time

Type of Requisition: Pipeline Clearance Level Must Currently Possess: Top Secret Clearance Level Must Be Able to Obtain: Top Secret Public Trust/Other Required: None Job Family: Systems Engineering Job Qualifications: Skills: Microsoft Windows Server, System Administration, Virtual Environments Certifications: None Experience: 6 + years of related experience ship Required: Yes Job Description: Transform technology into opportunity as a Senior Systems Administrator with GDIT. A career in
Posted 4 days ago | Updated 7 hours ago

Senior IT System Administrator

Electronic Consulting Services, Inc (ECS Federal)

•

Warner Robins, Georgia, USA

Full-time

Job Description ECS is seeking a Senior IT System Administrator to work in our Warner Robins, GA office. Please Note: This position is contingent upon additional funding. ECS is seeking a highly qualified Senior IT System Administrator with an active Top Secret/SCI Clearance and have a Security + CE certificate to work on our project at Robins Air Force Base, GA. The selected candidate will be able to communicate effectively (written/verbal), possess strong interpersonal skills, be self-moti
Posted 7 days ago | Updated 4 hours ago

IT-Specialty Software Engineer, Senior

Mastech Digital

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Pittsburgh, Pennsylvania, USA

Contract

Mastech Digital provides digital and mainstream technology staff as well as Digital Transformation Services for all American Corporations. We are currently seeking an IT-Specialty Software Engineer, Senior for our client in the Banking domain. We value our professionals, providing comprehensive benefits and the opportunity for growth. This is a Contract position, and the client is looking for someone to start immediately. Duration: 19 Months Contract Location: Pittsburgh, PA (Hybrid) Salary: $75
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Posted 60+ days ago | Updated 1 hour ago

IT Linux Systems Administrator - Top Secret Clearance

SpaceX

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Hawthorne, California, USA

Full-time

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today SpaceX is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars. IT LINUX SYSTEMS ADMINISTRATOR - TOP SECRET CLEARANCE SpaceX is looking for an experienced Systems Administrator with deep knowledge and broad experience across Linux-based technologies and application support. The id
Posted 60+ days ago | Updated 7 hours ago

Senior IT Project Manager

Vaco by Highspring

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Silver Spring, Maryland, USA

Full-time

Senior IT Project Manager Location:Near Takoma Park, MD(Hybrid schedule) Responsibilities: Manage large-scale, complex programs and projects with internal and external stakeholders.Develop and oversee project engagement including planning, vendor relationships, communications, resources, budget, risks, and issues.Define project goals, requirements, and success metrics in collaboration with stakeholders.Lead multidisciplinary teams through project lifecycles, ensuring alignment with industry best
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Posted 15 days ago

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 27 days ago | Updated 7 hours ago

Sr. Systems Analyst - PLM

Alpha Silicon

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US

Third Party, Contract

Title: Sr. Systems Analyst - PLM Location: Remote Terms: Contract Job Description The Systems Analyst for PLM designs, develops, and launches efficient PLM system configurations and integrations to various down-stream systems and content authoring tools used in product development and manufacture. This individual will apply proven communication, analytical and problem-solving skills to help identify, communicate, and resolve systems issues to maximize the benefit of IT systems investments. P
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Posted 2 days ago | Updated 7 hours ago

IT SPECIALIST - SR. IT SPECIALIST - Network Administrator

Southwest Research Institute

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San Antonio, Texas, USA

Full-time

Who We Are: Network Telecommunications Services: Responsible for connectivity and communications needs for the Institute. This includes network administration of routing, switching, unified communications, wireless and ISP connectivity. In addition, we manage AV operations and the telecom infrastructure inside/outside plant. Objectives of this Role: Handle centralized network management.Administer DNS/DHCP and wireless network systems.Cross-train into other network disciplines. Daily and Month
Posted 53 days ago | Updated 7 hours ago

Sr Windows Systems Administrator

RTX Corporation

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McKinney, Texas, USA

Full-time

Date Posted: 2025-07-02 Country: United States of America Location: TX190: 2501 West University, McKinney 2501 West University , McKinney, TX, 75070 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.Security Clearance: DoD Clearance: Secret At Raytheon, the foundation of everything we do is rooted in our values and a higher calling - to help our nation
Posted 10 days ago | Updated 7 hours ago

Sr Windows Systems Administrator

RTX Corporation

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El Segundo, California, USA

Full-time

Date Posted: 2025-07-02 Country: United States of America Location: CA222: 2006 E El Segundo Blvd BldgE04 2006 East El Segundo Boulevard Building E04, El Segundo, CA, 90245 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.Security Clearance: DoD Clearance: Secret At Raytheon, the foundation of everything we do is rooted in our values and a higher calli
Posted 10 days ago | Updated 7 hours ago

Senior Systems Administrator

Veeva Systems

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Phoenix, Arizona, USA

Full-time

Veeva Systems is a mission-driven organization and pioneer in industry cloud, helping life sciences companies bring therapies to patients faster. As one of the fastest-growing SaaS companies in history, we surpassed $2B in revenue in our last fiscal year with extensive growth potential ahead. At the heart of Veeva are our values: Do the Right Thing, Customer Success, Employee Success, and Speed. We're not just any public company - we made history in 2021 by becoming a public benefit corporation
Posted 18 days ago | Updated 7 hours ago

Sr Windows Systems Administrator

Raytheon

•

McKinney, Texas, USA

Full-time

Date Posted: 2025-07-02 Country: United States of America Location: TX190: 2501 West University, McKinney 2501 West University , McKinney, TX, 75070 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.Security Clearance: DoD Clearance: Secret At Raytheon, the foundation of everything we do is rooted in our values and a higher calling - to help our n
Posted 14 days ago | Updated 15 hours ago

Sr. Systems Administrator

Robert Half

•

Asheville, North Carolina, USA

Contract

Description We are looking for an experienced Sr. Systems Administrator to join our team in Asheville, North Carolina. This is a long-term contract position that offers the opportunity to work with cutting-edge technologies and contribute to the stability and security of our IT infrastructure. The ideal candidate will have expertise in cloud-based systems, endpoint management, and automation tools. Responsibilities: Oversee and manage cloud technologies, including private endpoint setups and in
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Posted 27 days ago | Updated 4 hours ago

IT Business Services Senior Consultant

SAP Americas, Inc.

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Newtown Square, Pennsylvania, USA

Full-time

Requisition ID: 427706 Work Area: Information Technology Expected Travel: 0% Career Status: Professional Employment Type: Regular Full Time Career Level: T3-3 Original Posting Date: 06/23/2025 Job Title: IT Business Services Senior Consultant Location: Newtown Square, PA Work Model: Hybrid work model Purpose and Objective: SAP America, Inc. seeks an IT Business Services Senior Consultant at our Newtown Square, PA location to cooperate closely with the customer's technology and business stakehol
Posted 22 days ago | Updated 7 hours ago

IT Administrator/Windows/Onsite NJ

Motion Recruitment Partners, LLC

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Robbinsville Township, New Jersey, USA

Full-time

This IT administrator position is a full-time position that will allow you to manage and support the daily operations within a manufacturing company near Trenton, NJ. The responsibilities of the IT administrator are to oversee all IT operations within this facility. This is a hands-on role that requires an individual who is self-motivated, able to work independently and is excellent with time management skills with a proven ability to meet deadlines Required Skills & Experience Knowledge of Win
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Posted 3 days ago | Updated 3 hours ago

Sr Staff IT Systems Engineer

PaloAlto Networks

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Santa Clara, California, USA

Full-time

Company Description Our Mission At Palo Alto Networks everything starts and ends with our mission: Being the cybersecurity partner of choice, protecting our digital way of life. Our vision is a world where each day is safer and more secure than the one before. We are a company built on the foundation of challenging and disrupting the way things are done, and we're looking for innovators who are as committed to shaping the future of cybersecurity as we are. Who We Are We take our mission of
Posted 14 days ago | Updated 7 hours ago

Systems Administrator II, 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 Systems Administrator II maintains and manages server computing and storage platforms, including, but not limited to, installation, configuration, preventive maintenance, operation, and problem-resolution activities. Duties and Responsibilities, as they align to Ryan's Key Results People: Create a positive te
Posted 60+ days ago | Updated 21 days ago

Senior Systems Administrator

Golden Resources. Inc.

•

Dallas, Texas, USA

Full-time, Contract, Third Party

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 7 days ago | Updated moments ago

Senior Systems Administrator (Linux and Windows)

General Dynamics

•

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 13 days ago | Updated 7 hours ago