Sr. Linux/VMware System Administrator
Confirmed on the employer's own hiring board on Oct 24, 2026. First seen by Alion on Sep 6, 2026. ManTech scores A on the Alion truth index.
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MANTECH seeks a motivated, career-driven, and customer-focused Sr. Linux/VMWare System Administrator to join our team in Laurel, MD.
This position supports the high-visibility Enterprise Infrastructure Services (EIS) organization, responsible for the delivery and security of MPO’s Enterprise Information Technology (EIT), the foundation for enterprise-wide services. As a Senior System Administrator, you will work alongside customers, Integrated Product Teams (IPTs), and vendors to support the implementation and compliance of advanced EIT capabilities through Data Center & Compute Services.
Responsibilities include, but are not limited to:
- Provide Tier 1 (Help Desk) and Tier 2 (Escalation) problem identification, diagnosis, and resolution of problems.
- Provide support to IT systems including day-to-day operations, monitoring & problem resolution for all the client/server/storage/network devices, etc.
- Configure and manage Linux, and possibly Windows operating systems, installs/loads operating system software and patches to maintain security compliance, troubleshoot, maintain integrity of and configure network components, along with implementing operating system enhancements to improve reliability & performance.
- Patching and updating Linux distributions regarding security findings.
- Adding / Removing users and setting permissions to meet certain user privileges.
- Working with STIGs and fixing/updating vulnerabilities with STE/STN findings.
- Renew Linux server certificates and applying updates to TLS security versions.
- Working with automation software such as ANSIBLE to streamline updates and patching.
Minimum Qualifications:
- Bachelor’s degree with 12+ years of relevant System Administration experience OR Associates degree with 15 years of relevant System Administration experience
- Senior level Linux Systems Administration experience is required
- Experience with VMWARE, vSphere, VCF (VMware Cloud Foundations)
- Server and Hardware maintenance
- Knowledge of patching & updating Linux distributions regarding security findings.
Preferred Qualifications:
- 20 years of relevant System Administration experience (no degree requirement)
- Experience with Tier 1 (Help Desk) and Tier 2 (Escalation) problem identification, diagnosis, and resolution of problems.
- Experience with monitoring tools like NAGIOS.
Clearance Requirements:
- Must possess and maintain a current/active TS/SCI clearance with Polygraph
Physical Requirements:
- Must be able to remain in a stationary position 50% of the time
- Occasionally moves about inside the office to access file cabinets, office machinery, etc.
- Frequently communicate with co-workers, management, and customers, including delivering presentations. Must be able to exchange accurate information in these situations
The projected compensation range for this position is $128,000.00-$214,400.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.
MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.
If you need a reasonable accommodation to apply for a position with MANTECH, please email us at [email protected] and provide your name and contact information.