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Network Security Jobs in Fairfax, VA

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Network Security Engineer MANTECH

Chantilly, VA

Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations. High School Diploma or GED with 7+ years of progressively responsible experience in Network Security Engineering, Network Analysis, or a related technical discipline.

Today

Physical Security/Information Assurance (PS/IA) Specialist 1 ESC, Inc.

Joint Base Andrews, MD

$110,000–$115,000 / year
Contractor
Full time
Quick Apply

This position provides physical security (PS) and information assurance (IA) support for collateral, SCI and SAP systems in accordance with JSIG and other DoD and national guidance for facilities with internal networks and guest systems.

30+ days ago

Network Effects Engineer Johns Hopkins Applied Physics Laboratory (APL)

Laurel, MD

Design, build, and orchestrate threat-representative network topologies and software-defined comms systems incorporating Anti-Detection and Anti-Censorship concepts to serve as test ranges tailored for unique mission profiles. Develop, evaluate, and qualify an evolving portfolio of network and comms enabled capabilities, determining their real-world operational impact, signature footprint, and clandestine survivability.

4 days ago

Network Engineer- WAN (Sr. Consultant level) Visa

Ashburn, VA

$152,200–$243,700 / year

Degree in Math, Science, Engineering, or Computer Science, Information Systems or related field OR Bachelor’s degree in Math, Science, Engineering, or Computer Science, Information Systems or related field AND minimum two (2) years of experience in a directly related field OR minimum four (4) years of directly related experience. This role plans, designs, and implements networked systems, manages configurations, supports and troubleshoots network problems, and coordinates with vendors for installation of routers, bridges, concentrators, and switches.

2 days ago

Network Engineer By Light Professional IT Services

Germantown, MD

This role is responsible for system configurations, deployment strategy, developing and maintaining user documentation, developing and maintaining readiness checklist, monitoring system performance, and identifying and resolving technical issues to ensure high system uptime and security. Familiarity of telecommunications services, including secure and non-secure phone systems, VoIP, fax, data networks, video teleconferencing, and satellite (Iridium/Starlink) communications.

12 days ago

Network Based Systems Analyst - III Base One Technology

Arlington, VA

$100,000–$140,000 / year
Contractor
Quick Apply

Provides remote and onsite advanced technical assistance, proactive hunting, rapid onsite incident response, and immediate investigation and resolution using host-based, network-based and cloud-based cybersecurity analysis capabilities. Team personnel provide front line response for digital forensics/incident response (DFIR) and proactively hunting for malicious cyber activity.

30+ days ago

Network Engineer III – SATCOM Engineer System One

Bluemont, VA

$80 / hour
Quick Apply

Our Customer has an exciting and challenging opportunity available for a Network Engineer supporting an Intelligence Community customer’s wide-area (WAN), local-area (LAN), and campus-area (CAN) networks across multiple security domains. Assist with development and execution of test plans and supporting documentation of all network configuration upgrades, additions, or revisions for customer approval before implementation.

3 days ago

Sr Network Engineer System One

Washington, DC

Quick Apply

Provide senior-level network engineering support, including advanced data and VoIP design, upgrades, troubleshooting, and Level 3 operational support for campus and wide area networks. • Extensive experience with Cisco routers and switches, Cisco IOS routing protocols (EIGRP, RIP, BGP, IBGP, OSPF), TCP/IP, IEEE 802.x Ethernet, IPSec, and Wireless networking.

13 days ago

NOC Support Engineer Inmarsat Government, Inc

Reston, VA

Full time

Leveraging an industry-leading scalable, multi-band network infrastructure, Inmarsat Government offers a suite of managed network services and end-to-end communication solutions to support users on land, at sea and in the air, even in the world’s most remote regions. The NOC Support Engineer is responsible for maintaining, modifying, and managing the NOC's software and monitoring infrastructure, including hardware and software applications used to monitor and manage Inmarsat Government's global MPLS and SATCOM networks.

30+ days ago

Network Engineer (Cloud) By Light Professional IT Services

Alexandria, VA

Additionally, this individual should have experience with the setup and maintenance of VPN tunnels, vLAN configurations, wireless network configurations, IPv6 and IPv4 (including complex sub-netting) and network security (Cisco ASA Firewalls, ACLs, IPsec, and other encryption methodologies). Proficient in using network management and monitoring platforms such as Arista CloudVision, Riverbed, NetFlow, TAPs, SPANs, AWS Network Manager, Azure Network Watcher, or equivalent third-party solutions for visibility, diagnostics, and topology tracking.

12 days ago

Transport Network Automation Engineer Jobot

MONTGOMRY VLG, MD

$120,000–$150,000 / year
Quick Apply

The ideal candidate combines deep enterprise networking expertise with strong network automation skills and will help improve the repeatability, reliability, security, and traceability of multi-site network deployments while reducing manual configuration and engineering effort. We are seeking an experienced Transport Network Automation Engineer to design, develop, and maintain an end-to-end network automation framework that transforms engineering designs into validated, device-specific configurations and controlled production deployments.

10 days ago

Network Engineer MANTECH

Chantilly, VA

Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations. High School Diploma or GED with 7+ years of progressively responsible experience in Network Engineering, Network Analysis, or a related technical discipline.

Today

Network Design Engineer By Light Professional IT Services

Arlington, VA

The Network Design Engineer will adhere to U.S. Army engineering processes during the development of all submissions; identify additional processes and documentation formats, as necessary submit site specific reports and drawings to Government for review and approval and adhere to the Government’s established process for reviewing, updating, approving, and disseminating Design and Engineering documents. The Design and Engineering Site Lead must be experienced and familiar with the design and configuration of Layer 2 and Layer 3 networks including spanning tree, software defined networking, VLANs, Virtual Network Identifiers (VNI)s, VXLANS, VRFs, Hostnames, OEM equipment from CISCO.

12 days ago

Lead Network Engineer (WAN Design and Implementation) System One

Fairfax, VA

$100–$120 / hour
Quick Apply

This role will manage a team of seven network engineers across multiple time zones, drive technical decisions, and partner closely with customer stakeholders and engineering leadership to ensure successful delivery. Lead the design and implementation of a global Wide Area Network (WAN) and serve as the senior customer-facing technical authority for the program.

10 days ago

DevOps/Azure Networking - Remote Levi, Ray & Shoup

Washington DC, DC

Remote

$150,000–$180,000 / year

This role is ideal for someone who enjoys solving open‑ended technical problems, translating high‑level requirements into well‑architected solutions, and advising on best practices across networking, security, and cost optimization. This is a contract consulting role designed for a hands‑on professional who can independently design, assess, and implement secure, scalable Azure networking and DevOps solutions with minimal oversight.

12 days ago

Network Deployment Engineer MANTECH

Chantilly, VA

Experience with Microsoft Windows 2008/2012/2016/2019 Servers; Microsoft Windows 10; administering Microsoft Exchange, Active Directory, and workstation and server hardware; administering Microsoft Office 2010/2016; administering DNS, Group Policy, and PKI; administering vSphere, Horizon View, data backup, and antivirus software; basic networking including DHCP/TCPIP; experience with deploying workstation images; and experience with thin and/or zero clients. Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.

2 days ago

Splunk Cyber Security SME (Remote) PlanIT Group

Arlington, VA

Remote

Quick Apply

Manages knowledge objects (fields, extractions, tags, event types, lookups, workflow actions, aliases, macros, and so on) – through automations, scripting, management server functions; to include. This role demands deep expertise in Splunk system architecture, design, implementation, configuration and operational support in a hybrid on-prem Unix/Linux and cloud-based environment.

10 days ago

Information System Security Officer PlanIT Group

Falls Church, VA

Quick Apply

Job Description: Information System Security Officer Conducts assessments of threats and vulnerabilities, determines deviations from acceptable configurations or enterprise or local policy, assesses the level of risk, and develops and/or recommends appropriate mitigation countermeasures in operational and non-operational situations. Task description and/or any specific requirements: • Ability to manage responsibility for security assessments of a variety of applications or domains, to include cloud computing, and to manage several project/initiatives of large size, complexity, and risk.

10 days ago

AWS Cloud Security Architect System One

Reston, VA

$156,300 / year
Quick Apply

Provide security architecture guidance for enterprise applications, AWS cloud environments, hybrid infrastructure, cybersecurity platforms, APIs, containers, data solutions, and AI enabled applications. Support secure AI/GenAI adoption, including LLM integrations, RAG implementations, prompt security, data protection, access controls, monitoring, logging, and human in the loop safeguards.

10 days ago

Cyber Security Analyst - Sr. Consultant level Visa

Ashburn, VA

$152,200–$243,700 / year

Visa is a world leader in payments technology, facilitating transactions between consumers, merchants, financial institutions and government entities across more than 200 countries and territories, dedicated to uplifting everyone, everywhere by being the best way to pay and be paid. If you would like to join a company where security is truly valued, where you can work with like-minded peers who are passionate about the art & science of cyber defense, and where you can use state of the art tools for maximum impact, then we have a home for you.

11 days ago

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Network Security Jobs in Fairfax, VA

Network Security Engineer MANTECH

Physical Security/Information Assurance (PS/IA) Specialist 1 ESC, Inc.

Network Effects Engineer Johns Hopkins Applied Physics Laboratory (APL)

Network Engineer- WAN (Sr. Consultant level) Visa

Network Engineer By Light Professional IT Services

Network Based Systems Analyst - III Base One Technology

Network Engineer III – SATCOM Engineer System One

Sr Network Engineer System One

NOC Support Engineer Inmarsat Government, Inc

Network Engineer (Cloud) By Light Professional IT Services

Transport Network Automation Engineer Jobot

Network Engineer MANTECH

Network Design Engineer By Light Professional IT Services

Lead Network Engineer (WAN Design and Implementation) System One

DevOps/Azure Networking - Remote Levi, Ray & Shoup

Network Deployment Engineer MANTECH

Splunk Cyber Security SME (Remote) PlanIT Group

Information System Security Officer PlanIT Group

AWS Cloud Security Architect System One

Cyber Security Analyst - Sr. Consultant level Visa

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