Full-Time
Senior Systems Administrator
Updated on 9/4/2026
L3Harris Technologies
10,001+ employees
Defense technology solutions for national security
No salary listed
No H1B Sponsorship
Palm Bay, FL, USA
In Person
US Top Secret Clearance Required
Bachelor's, Master's
 IT Operations (1) |
|---|
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- A Bachelor's degree and a minimum of 6 years of prior relevant experience, or a Graduate degree and a minimum of 4 years of prior related experience; in lieu of a degree, a minimum of 10 years of prior related experience.
- An active Top Secret/Sensitive Compartmented Information clearance with a full-scope polygraph.
- Administer and maintain Microsoft Windows servers, client systems, backup systems, network infrastructure, and databases.
- Provide end-user desktop support for systems and applications at the local site and across the classified wide area network.
- Build, configure, and maintain physical and virtual Windows servers in support of program requirements.
- Perform regular system updates, patching, and hardening activities to reduce vulnerabilities and ensure compliance with applicable standards.
- Develop and maintain scripts and automation tools to streamline deployment and improve operational efficiency.
- Collaborate with engineering teams to understand program requirements and deliver effective technical solutions.
- Communicate complex technical issues, risks, and recommendations clearly to management and non-technical stakeholders.
- Six years of experience as a system/network administrator supporting an enterprise-level domain environment.
- Strong knowledge of Windows and/or Linux operating systems, networking protocols, PowerShell, and security best practices.
- Experience supporting Linux systems, including Red Hat Enterprise Linux 8/9, CentOS, and Ubuntu.
- Experience with Commvault or a similar enterprise-level backup system.
- Experience with VMware or similar virtualization platforms.
- Experience with Ansible.
- Experience managing systems in compliance with the NIST Risk Management Framework.
L3Harris Technologies provides defense and national-security technology solutions across space, air, land, sea, and cyber domains. It develops integrated systems with advanced communications, surveillance, and reconnaissance to support government agencies and defense contractors under long-term contracts. The product combines hardware, software, and services to deliver secure, interoperable, mission-critical capabilities. Its goal is to help clients strengthen operational readiness and national security through reliable, multi-domain technologies and sustained partnerships.
Company Size
10,001+
Company Stage
IPO
Headquarters
Melbourne, Florida
Founded
1895
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Simplify's Take
What believers are saying
- Q2 2026 revenue reached $5.9 billion, with backlog climbing to a record $42 billion.
- Management raised 2026 guidance to $23.2 billion-$23.7 billion after 7.3 billion orders.
- Intuitive Machines will build 18 spacecraft for L3Harris's SDA Tranche 3 missile-tracking mission.
What critics are saying
- Aug. 17, 2026 CEO ouster exposes governance weakness after misconduct review and abrupt board turnover.
- U.S. government concentration is dangerous; 74% of year-to-date revenue came from federal customers.
- Missile-production buildouts need years; any program slip, defect, or cancellation hits backlog conversion hard.
What makes L3Harris Technologies unique
- L3Harris spans missile propulsion, secure communications, and space payloads across all warfighting domains.
- Aug. 2026 Roman telescope launch showcases decade-long NASA integration and radiation-hardened optical systems.
- July 27, 2026 PAC-3 agreement and THAAD expansion lock L3Harris into critical interceptor supply.
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Benefits
Health Insurance
Disability Insurance
401(k) Retirement Plan
401(k) Company Match
Paid Vacation
Paid Holidays
Mental Health Support
Relocation Assistance
Growth & Insights and Company News
6 month growth
↑ 14%1 year growth
↑ 14%2 year growth
↑ 14%L3Harris Technologies has provided key components for NASA's Nancy Grace Roman Space Telescope, which recently launched successfully. The company supplied the 2.4-metre Optical Telescope Assembly and radiation-hardened electronics for the observatory, which will operate approximately 1 million miles from Earth. The telescope is designed to survey the cosmos 1,000 times faster than the Hubble Space Telescope. Once operational, it will conduct three primary surveys, including scanning roughly 12% of the entire sky in under 18 months to measure the universe's expansion rate and study supernova explosions from up to 8 billion years ago. The project represents more than a decade of collaboration between L3Harris and NASA's Goddard Space Flight Center. L3Harris has previously contributed technology to missions including the James Webb Space Telescope and Mars rovers.
L3Harris Technologies selected Intuitive Machines on 4 August to build 18 advanced spacecraft platforms for the Space Development Agency's Accelerated Missile Defense Tranche 3 mission. Intuitive Machines will manufacture and deliver the satellite platforms to host L3Harris' payload technology for national security space operations. L3Harris reported Q2 2026 revenue of $5.9 billion, an 8% year-over-year increase, with net income of $600 million. The company raised its full-year 2026 revenue guidance to $23.2 billion–$23.7 billion, backed by a $42.0 billion backlog. Intuitive Machines reported Q2 2026 revenue of $206 million, more than four times its prior-year level. However, the company posted an operating loss of $47 million and burned $84 million in cash during the quarter, leaving $367 million in cash. Its backlog expanded to a record $1.8 billion.
Christopher Kubasik has been ousted as CEO of L3 Harris following allegations of misconduct. According to Semafor, citing sources familiar with the matter, an investigation found he was engaged in an inappropriate relationship with a subordinate. This marks the second time Kubasik has been forced out of a leadership position under similar circumstances. In 2012, he was set to become CEO of Lockheed Martin but resigned after an ethics investigation confirmed he had a close personal relationship with a subordinate employee. L3 Harris, headquartered in Melbourne, Florida, announced Kubasik's departure on 17 August. The company said the misconduct was unrelated to financial reporting, controls, customer relationships or operational performance. Kubasik will retain some vested stock options but won't receive severance payments.
L3Harris Technologies announced the immediate departure of CEO Christopher Kubasik following a conduct review, causing shares to fall roughly 2.7% in premarket trading Monday. The board appointed Sam Mehta as president and CEO, whilst Lewis Hay III became independent chairman. The company stated Kubasik's conduct was inconsistent with its Code of Conduct, though unrelated to financial reporting, controls, customer relationships, or operational performance. Following an investigation with independent counsel, the board entered into a separation agreement with Kubasik. Mehta joined L3Harris in 2023 and brings over 25 years of aerospace and defence leadership experience. He previously led segments comprising more than 80% of the company's total revenue. Despite the leadership change, L3Harris reaffirmed its 2026 consolidated revenue and financial guidance.
L3Harris Technologies has successfully completed a hot-fire test of its stage two advanced large solid rocket motor for the Missile Defense Agency's Next Generation Interceptor programme. The company conducted the test as part of the Lockheed Martin team developing the homeland missile defense system. The test validated the system's design integrity, with the motor completing a full-duration burn in a simulated high-altitude, vacuum environment. Engineers evaluated performance in conditions mimicking Earth's upper atmosphere. L3Harris serves as the primary propulsion and control systems provider for NGI, producing both stage one and stage two rocket motors, plus the Attitude Control System and Divert and Attitude Control System. The company manufactures components across facilities in California, Virginia, Alabama, and Arkansas.