Network/System Administrator (Net/Sys Admin) III
GDIT· enterprise· Defense IT· Sep 16, 2026 · 1mo ago
Bedford, MA
In office
Full-time
Mid
$108K–$141K
5+ years exp
Job description
Type of Requisition:
Regular
Clearance Level Must Currently Possess:
Top Secret/SCI
Clearance Level Must Be Able to Obtain:
Top Secret SCI + Polygraph
Public Trust/Other Required:
None
Job Family:
IT Infrastructure and Operations
Job Qualifications:
Skills:
Network Administrator, Network Architecture, Network Engineering Certifications:
None Experience:
5 + years of related experience US Citizenship Required:
Yes
Job Description:
Location: Bedford, MA
Network/System Administrator (Net/Sys Admin) III
The primary function will be to organize, install, and support government organization’s computer systems, including local area networks (LANs), wide area networks (WANs), network segments, intranets, and other data communication systems. This will also include helping architect, design and analyze network models. It will require participation in decisions about buying future hardware or software to upgrade organization’s infrastructure.
This position might be called upon to provide technical support to computer users to help solve users’ problems. The position will provide “day-to-day” support for Collateral, Sensitive Compartmented Information (SCI) and Special Access Program (SAP) activities. MUST HAVE 2 YEARS OF SAP experience. No exceptions.
Performance shall include:
Able to perform self-sustaining and work with little to no oversight.
Lead IT ops team on day-to-day management and operations of Networks and implement capabilities vetted through Cybersecurity, ISSE and higher headquarters to maintain JSIG/RMF Authority to Operate and maintain Continuous Monitoring tools and processes.
Manage COTS & GOTS products to collect, display and remediate a variety of automated system security and system operations/performance functions and metrics.
Assist during security assessments of servers/network devices/security appliances.
Assist during security assessments with regard to accuracy and efficiency.
Assist with Creation of operational Operations and Maintenance (O&M) checklists to maintain the service (daily, weekly, monthly, yearly O&M checklists); build Tactics, Techniques and Processes (TTPs) and Standard Operating Processes (SOPs) associated with service checklists.
Manage and operate monitoring tools/capabilities with the enterprise security information and event management (SIEM) and create/tailor complex event alarms/rules and summary reports.
Execute cybersecurity operations procedures for day-to-day network management, operations and maintenance.
Monitor/analyze output of cybersecurity related tools for reportable security incidents and residual risk.
Assist in analyzing technical risk, upon request, of emerging cybersecurity tools and processes.
Work as part of a security incident response team as needed.
Assist ISSM/ISSO/ISSE with the Integration/Development new techniques to improve.
Confidentiality, Integrity, and Availability for networks/systems operating at various classification levels.
Confidentiality, Integrity, and Availability for networks/systems operating at various classification levels.
Advanced technical competency in one or more of the following supported platforms:
Microsoft Windows Server, Active Directory Red Hat Enterprise Linux servers, MS Hyper-V/VMWare/ESx/Xen Hypervisors, Enterprise networking/firewalls/intrusion detection/prevention systems, forensic analysis/vulnerability assessment, Group Policy management and configuration, Scripting, BMC Footprints, WSUS, , Lumension, Bitlocker, SQL Server 2012, TomCat, IIS, Windows Server 2012r2/2016, Win 10, Red Hat 6.5, Microsoft Office Toolkits, SEIMs, Logrhythm, ACAS/Nessus/SCAP, mandatory/role-based access control concepts (e.g. SE Linux extensions to RHEL, PitBull, AppArmor, and Sentris), video teleconferencing/VOIP, Oracle/MS SQL database security, and Apache/IIS Web server security.
Other Requirements:
Thorough knowledge of Microsoft Windows desktop and server operating systems, Microsoft Exchange Server, and as needed RHEL operating systems administration and associated hardware
Experience in effective communication and collaborating in a high-performance team environment.
Group Policy design and configuration.
Working knowledge of CISCO network and switching and virtualization technologies.
Working knowledge of virtualization as it applies to user environments, operating systems, and network appliances.
Working knowledge of Local Area Network (LAN) and Wide Area Network (WAN) technologies and data backup technologies.
Working knowledge communications security (COMSEC) policies and integration.
Working knowledge of Risk Management Framework, Common Criteria, and System Security Policy as they relate to assessments and authorization.
Working knowledge and current relevant experience with PL2, PL3, and PL4 network environments/systems.
Working knowledge of WSUS and/or YUM patch deployment methodologies.
Must be familiar with DoD policy as it applies to implementing and executing system and network administration.
Working knowledge of Risk Management Framework and how to apply it to network/information system environments.
Experience:
5 years related experience.
2 years SAP experience required.
Education:
Bachelor’s degree OR Associate’s degree in a related area 2 years’ experience OR equivalent experience (4 years)
Certifications:
IAT Level III (CISSP, CASP CE, CCNP Security, CISA, etc.)
Clearance Required to Start:
TS/SCI required.
Must be able to Attain – TS/SCI with CI Polygraph.
#AirforceSAPOpportunities #SAP
The likely salary range for this position is $107,744 - $140,760. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.
Scheduled Weekly Hours:
40
Travel Required:
10-25%
T elecommuting Options:
Onsite
Work Location:
USA MA Bedford
Additional Work Locations:
USA MA Avon, USA MA Boston, USA MA Braintree, USA MA Burlington, USA MA Cambridge, USA MA Fort Devens, USA MA Norwood, USA MA Peabody, USA MA Quincy, USA MA Taunton, USA MA Waltham, USA MA Westwood
Total Rewards at GDIT:
Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.
Our Identity Verification Process:
As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.
About Our Work:
We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.
Join our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc .
Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans
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Benefits
Benefits detected in the listing.
Dental
Vision
401(K)
Paid Time Off