DoW System Administrator – Mid/Senior

Mission Technologies, a division of HII

SysAdmin managing program-owned infrastructure for Warfare Systems under HII’s Mission Technologies division. Designing secure network patterns and leading high-stakes technical work with visible mission impact.

Posted 4/15/2026full-timeRoanoke • Virginia • 🇺🇸 United StatesSenior💰 $90,000 - $140,000 per yearWebsite

Tech Stack

Tools & technologies

DNSLinux

About the role

Key responsibilities & impact

Maintains smooth operation of multi-user computer systems, including coordination with network administrators.
Interacts with users and evaluates vendor products.
Makes recommendations to purchase hardware and software, coordinates installation and provides backup recovery.
Develops and monitors policies and standards for allocation related to the use of computing resources.
Ancillary duties may include setting up administrator and service accounts, maintaining system documentation, tuning system performance, installing system wide software and allocating mass storage space.

Requirements

What you’ll need

Demonstrated experience administering and securing Windows and/or Linux enterprise environments
Strong knowledge of networking fundamentals, including DNS, DHCP, VLANs, routing, and firewall concepts
Experience performing system hardening, patch management, and vulnerability remediation
Proven ability to manage multi-user system environments and collaborate with network, security, and engineering teams
Experience developing or maintaining system documentation, configurations, and operational procedures
Ability to obtain and maintain a DoD security clearance and meet program-specific eligibility requirements
Systems Administrator II 3 years relevant experience with Bachelors in related field; 1 year relevant experience with Masters in related field; or High School Diploma or equivalent and 7 years relevant experience.
Systems Administrator III 6 years relevant experience with Bachelors in related field; 4 years relevant experience with Masters in related field; or High School Diploma or equivalent and 10 years relevant experience.
Systems Administrator IV 10 years relevant experience with Bachelors in related field; 8 years relevant experience with Masters in related field; or High School Diploma or equivalent and 14 years relevant experience.

Benefits

Comp & perks

best-in-class medical, dental and vision plan choices
wellness resources
employee assistance programs
Savings Plan Options (401(k))
financial planning tools
life insurance
employee discounts
paid holidays and paid time off
tuition reimbursement
early childhood and post-secondary education scholarships

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

Windows administrationLinux administrationsystem hardeningpatch managementvulnerability remediationnetworking fundamentalsDNSDHCPVLANsrouting

Soft Skills

collaborationevaluationrecommendationpolicy developmentdocumentation maintenance

Certifications

DoD security clearance