Network/Systems Administrator III
$104.04k - $140.76kGeneral Dynamics
Network/System Administrator III
Transform technology into opportunity as a Network/System Administrator III with GDIT. A career in enterprise IT means connecting and enhancing the systems that matter most. At GDIT you'll be at the forefront of innovation and play a meaningful part in improving how agencies operate. At GDIT, people are our differentiator.
As a Network/Systems Administrator III, you will help ensure today is safe and tomorrow is smarter. The position will provide "day-to-day" support for Collateral, Sensitive Compartmented Information (SCI) and Special Access Program (SAP) activities.
Responsibilities for this position 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 metric
- 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
- 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 include:
- 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
- Working knowledge of CISCO network and switching and virtualization technologies
- Working knowledge of Local Area Network (LAN) and Wide Area Network (WAN) technologies and data backup technologies to include communication security (COMSEC) integration.
- Working knowledge of Risk Management Framework, and, Common Criteria, and System Security Policy as they relate to A&A
- 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
- Must be able to lift up to 50 lbs
What you'll need to succeed:
- 5+ years related experience
- 2+ years Special Access Program (SAP) experience required
Education:
- Bachelor's degree in a related area OR Associate's degree in a related area + 2 years' experience OR equivalent experience (Desired)
Certifications:
- IAT Level 3 - within 6 months of the date of hire
Security Clearance Level:
- TS/SCI
- Must be able to obtain - TS/SCI with CI polygraph
GDIT IS YOUR PLACE:
- 401K with company match
- Comprehensive health and wellness packages
- Internal mobility team dedicated to helping you own your career
- Professional growth opportunities including paid education and certifications
- Cutting-edge technology you can learn from
- Rest and recharge with paid vacation and holidays
The likely salary range for this position is $104,040 - $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% Telecommuting Options: Onsite Work Location: USA VA Arlington
- ...Network/System Administrator III Washington, DC ( Job Type Full-time Description 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...SuggestedFull timeWork at officeLocal area
- ...Network/System Administrator III Location: Joint Base Anacostia-Bolling (JBAB) Position Description: The primary function will be to organize, install, and support government organization's computer systems, including local area networks (LANs), wide area networks...SuggestedWork at officeLocal area
$104.04k - $124.76k
...free employee assistance program, and a competitive 401k savings plan. At Watermark, our people come first! Network/Systems Administrator III The primary function will be to organize, install, and support government organization’s computer systems, including...SuggestedHourly payContract workWork experience placementWork at officeLocal area- ...Network Administrator III (Swing Shift) Title: Network Administrator III (Swing Shift) Location: Washington, DC Clearance: TS/SCI with... ...identify, analyze, and resolve operating/hardware network system problems Comprehensive knowledge of Cisco and Juniper routers...SuggestedAfternoon shift
- Invictus International Consulting, LLC is seeking a Network Administrator III for a swing shift in Washington, DC. The ideal candidate has at least 6 years of experience in network support and management, adept at troubleshooting Cisco and Juniper equipment. A Bachelor'...SuggestedAfternoon shift
- Invictus International Consulting, LLC. is seeking a Network Administrator III for swing shifts in Washington, DC. Responsibilities include administration of voice, video, and data networks, monitoring crypto equipment, and troubleshooting. Candidates must have a Bachelor...Shift workAfternoon shift
- ...Secret / SCI clearances, and IT certifications. The Network and related Mission Systems Administrator installs, configures, and supports mission systems... ...maintaining an operational network IAT LeveL II/Level III Certification Desired Qualifications Have a Bachelor...Full timeWork at officeLocal area
$18k
...ITSM IT Specialist III ProSidian is a Management and Operations Consulting Services... ...human resources, program management and administrative support. The staff augmentation is... ...multiprocessing capabilities provided by operating system and equipment. Analyzes equipment and...For contractorsWork experience placementWork at officeImmediate start- ...IT Specialist III Location: Washington, DC Type: Full-Time Overtime Exempt: Nonexempt Reports To: ARMADA... ...Responsibilities: Provides advanced technical support for systems, applications, and networks. Troubleshoots complex technical issues and provides...Full timeFor contractorsLocal areaRelocation
- General Dynamics Information Technology is seeking a Network/System Administrator III in Arlington, Virginia. This role focuses on managing IT operations and supporting security initiatives. Candidates should have over 5 years of related experience, strong knowledge of...
- ...System Admin/Engr III Solve complex Microsoft Exchange and related email infrastructure, as well as architectural challenges, at scale... ...solutions while mentoring junior team members on Exchange administration, troubleshooting, and maintenance procedures. Participate...
- ...compliance, securing operating systems, and executing patch... ...in a complex multi-layered network. Implement cybersecurity... ...Perl, VBScript , or similar administrative languages. Collaborate with... ...technology. IAT or IAM Level III Certification (CASP, CCNP, CISA...Full time
- ...solutions in: National Security Programs Professional, Administrative, and Management Support Mission and Warfighter Support... ...(Open) Position Status: Full Time Position Title: Network/System Administrator II Location: Washington, DC Security Clearance...Full timeFor contractorsWork at officeLocal areaFlexible hours
- ...Certification: DoD 8140/8570 IAT Level II or Above REQUIRED Position Overview GES is seeking a Mid-Level Network System Administrator to support day-to-day operations and maintenance of enterprise systems within a secure Pentagon environment. Key Responsibilities...
- ...Solutions, Inc. (GRS) is seeking an enthusiastic, motivated, detail orientated, and talented individual for the position of Network/System Administrator II. Job Descriptio n: Summary: The Network/System Administrator II primary function is working within Special...Work at officeLocal area
- ...Sr. Network Engineer III Washington dc, DC Type: Permanent Category: Engineer Industry: Government Reference ID: JN -032026-105873 Date Posted: 05/08/2026 Shortcut: Description Recommended Jobs Description: Onsite in Washington, DC...Hourly payPermanent employmentFull timeLocal areaImmediate start
$230k - $342k
...As a Sr. Network Engineer III , you'll serve as a technical authority for voice, video, and collaboration platforms, contributing immediately as a subject matter expert within a fast-paced operational environment. Success requires deep technical expertise, proactive...Full timeWork experience placementLocal areaImmediate startFlexible hours- ...Job Description Job Description OCI Networking Engineer – Level III Federal Cloud Engineering Program POSITION SUMMARY Tharseo IT is... ...workflows. DUTIES AND ENGINEERING WORK Analyze complex system and security requirements and design network...Full timeContract workFor subcontractorRemote work
$230k - $320k
...As a Sr. Network Engineer III (Wireless) , you'll deliver senior wireless engineering expertise supporting a highly visible, security-sensitive... ...experience integrating wireless solutions with security systems and monitoring and supporting endpoint connectivity. ~ Ability...Full timeWork experience placementLocal areaImmediate startFlexible hours- ...Description Position: Network Engineer - Level III Location: Rosslyn, VA Clearance: Secret The Network Engineer Level III is... ...design, implementation, and management of complex network systems. This role involves resolving high-level network issues, optimizing...
- ...Employer: AMAZON DATA SERVICES, INC. Offered Position: Network Dev Engineer III Job Location: Arlington, Virginia Job Number: AMZ9794... ...Responsibilities: Responsible for delivering high-caliber network and systems operations, with a focus on deployments, scaling, and...
- ...is looking for a Salesforce Operations Analyst III to join our team! In this role, you will support... ..., and enhance ARC's CRM and ERP enterprise systems. This role requires expertise in both Salesforce administration and ERP platforms (e.g., NetSuite, SAP, Oracle),...Work at officeWork from homeFlexible hours
- ...Cybersecurity Engineer with specialty focus on network packet broker provides technical security... ...Engineer security into LAN and WAN system design, performing internal cyber hunt activities... ...Must possess current DoD 8570 IAT/IAM III certification Current active TS/SCI...
$125k - $130k
JOB SUMMARY The Network & Systems Administrator will be responsible for the design, implementation, maintenance, and security of the organization's hardware, software, cloud applications, and network infrastructure. This position ensures the optimal performance, reliability...Work experience placementWork at officeRemote work- We are supporting a growing technology organisation seeking a Senior Systems Administrator to manage and scale its internal IT and network infrastructure. This role is hands-on and varied, combining day-to-day IT support with longer-term systems, security, and automation...
$125k - $130k
A public health nonprofit in Washington, D.C. is seeking a Network & Systems Administrator responsible for the design and security of hardware, software, and network infrastructure. The role includes troubleshooting, user support, and documentation compliance. Candidates...- ..., and malware prevention/detection/removal. Track and elevate network support requests as needed to the appropriate staff. Work closely... ...team to ensure superior responsiveness to customer needs and system performance. Training and Qualifications Excellent analytical...Work experience placement
$79.65k
ValidaTek is looking for a Senior Network Engineer in Arlington, Virginia. This role involves... ...network issues, overseeing new system implementations, and collaborating with IT... ...network design and DoD environments, IAT Level III certification, and an active TS/SCI clearance...$149.84k
...GovCIO is currently hiring for Subject Matter Expert - Level III / Senior Network Architect for our NIH-CIT Proposal. This position will be... ...Qualifications Bachelor's Degree in Computer Science, Information Systems, Engineering or other related discipline and have at least...Currently hiring$149.84k
...GovCIO is currently hiring for Subject Matter Expert - Level III / Senior Network Architect for our NIH-CIT Proposal. This position will be... ...Qualifications Bachelor's Degree in Computer Science, Information Systems, Engineering or other related discipline and have at least...Full timeCurrently hiringFlexible hours
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Network/Systems Administrator III. Be the first to apply!
- network specialist Arlington, VA
- remote network administrator / IT support engineer Arlington, VA
- network associate Arlington, VA
- network administrator Arlington, VA
- cisco network administrator Arlington, VA
- computer network support specialist Arlington, VA
- provider network specialist Arlington, VA
- palo alto networks Arlington, VA
- director of network operations Arlington, VA
- network relations consultant Arlington, VA

