Role Overview
Core One is hiring a Senior Systems Administrator - Temp. This is a full-time role in Tampa. Part of Core One's Security hiring. Full responsibilities, required qualifications, and the apply link are listed in the description below.
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Job Description
Join our team at Core One! Our mission is to be at the forefront of devising analytical, operational and technical solutions to our Nation's most complex national security challenges. In order to achieve our mission, Core One values people first! We are committed to recruiting, nurturing, and retaining top talent! We offer a competitive total compensation package that sets us apart from our competition. Core One is a team-oriented, dynamic, and growing company that values exceptional performance!
Summary
Core one is Seeking a temporary Senior Systems administrator to provide systems administration and technical support for Modeling & Simulation (M&S) and enterprise network environments, including Linux/Windows systems, VMware, and associated hardware/software infrastructure. Responsible for system maintenance, patching, troubleshooting, user administration, infrastructure monitoring, cybersecurity compliance, and integration of new technologies to ensure secure and reliable operation of mission-critical environments. This is a temporary assignment supporting immediate program requirements with an anticipated duration of approximately 4 months.
Responsibilities
- Provide on-site Linux and Windows system administration, network, and end-user support for the operation and maintenance of Modeling & Simulation (M&S) and other network systems to include hardware, software, and communications interface for the M&S and other various networks.
- Uses specialized knowledge of operating systems including installation, configuration, maintenance, patching, triage, and hardening. Able to monitor infrastructure and operating system level services.
- Develops technical solutions to complex problems which require the regular use of ingenuity and creativity.
- Review, test, and integrate newly acquired hardware, software (to include commercial or government developed software), and firmware.
- Perform systems administration of Linux systems with Red Hat operating system, Windows client and server, and VMware virtual environment.
- Perform day-to-day systems administration to include establishing/maintaining/purging users accounts; trouble shooting/auditing the systems/network and taking remedial corrections; performing backups of user and OS files; adherence and implementation of all client and government security/cybersecurity regulations, policies, procedures, guidelines to ensure systems/networks are secure; Research and develop life cycle replacement plan and implement /develop/coordinate systems accreditation with government agencies.
Required Qualifications:
- Active TS/SCI clearance
- 10+ years' experience and Bachelor's degree in related field
- Information Assurance Technology (IAT) Level II Certification required (to include Baseline Certification, Computing Environment/Operating System Certificate, and Continuous Education), IAW DoD 8570.01-M
- Extensive Linux/Windows/VMware experience and expertise; broad experience with a variety of legacy and current software and hardware systems
- Expertise in systems security testing and hardening, data integration, system documentation, automation scripting, and troubleshooting
- Ability to work independently on highly sensitive and critical projects and systems
Desired Qualifications:
- Experience working on a Combatant Command staff or equivalent a plus
- Experience working with DELL EMC storage
- Experience working with Microsoft System Center Configuration Manager
- Experience working with VMware vCenter server and vSphere
- Knowledge of Joint Operations a plus
- Experience with the USCENTCOM AOR a plus
- Masters Degree in a related field a plus
Core One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender identity, sexual orientation, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
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Frequently Asked Questions
How do I apply for the Senior Systems Administrator - Temp position at Core One?
Use the Apply button above to submit your application directly to Core One. Most applications take less than 5 minutes if your resume and contact details are ready, and you'll be routed to the employer's official application system to finish.
Where is the Senior Systems Administrator - Temp position at Core One located?
This position is based in Tampa. Core One has not indicated remote or hybrid options for this role, so candidates should plan for on-site work.
What does a Senior Systems Administrator - Temp at Core One earn?
Core One has not disclosed a salary range in this posting. Many employers share specifics later in the interview process; you can also ask during a recruiter screen if compensation transparency is important to you.
When was the Senior Systems Administrator - Temp role at Core One posted?
This role was posted on April 30, 2026 (54 days ago). It's still listed as actively hiring; we re-confirm openings against the source system multiple times per day and remove closed roles.
How much experience does the Senior Systems Administrator - Temp role at Core One require?
This is a senior-level position. Most senior roles call for 5+ years of directly relevant experience. Core One lists their specific requirements in the description below, so review the must-have qualifications closely before applying.
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