May 26, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
We strive to attract and retain the best employees by providing an inclusive work environment wherein employees are receptive to diverse ideas, perspectives, and talents to help solve our toughest customer challenges: to develop and maintain some of the most technically sophisticated products, programs, and services in the world. The successful candidate will be expected to monitor, maintain, and provide Tier-2 and Tier-3 support of a mission critical network infrastructure, collect data for analysis, perform network upgrades, and be able to produce documentation and diagrams of the work they perform.
Reston, Virginia30+ days ago
strong>Company: Emergent Technologies Inc.
Emergent Technologies Inc., a veteran-owned provider of cutting-edge IT and engineering solutions, is seeking a highly experienced
Network Engineer (SME Level) with deep expertise in
Network Access Control (NAC) and
CISCO network appliances.
If you're a senior-level network engineer with deep NAC expertise looking to lead critical infrastructure security efforts, apply now to join Emergent Technologies Inc. in Herndon, VA.
.
p>2021 - 2024, Top Workplaces USA award (Energage) 2017 - 2025 Top Workplaces Award, Greater Washington Area (The Washington Post) 2018 - 2025 Certified Great Workplace, Great Place to Work 2021 - 2025, Best Workplaces in Consulting & Professional Services 2021 Fortune Best Workplaces for Millennials 2018 Fortune, Great Place to Work: Best Place to Work for Diversity 2017, 2020 - 2025 Top Workplace Award, South Carolina (Greenville Business Magazine, Columbia Business Monthly, and Charleston Business Magazine) 2025 Corporate Partnership Award, Association of Fundraising Professionals, Maryland Chapter 2025 Moxie Award, GovCon Category 2024 Patriot Award, Employer Support of the Guard and Reserve (ESGR), Department of Defense 2022 Freedom Award, Employer Support of the Guard and Reserve (ESGR), Department of Defense 2018, Above & Beyond Award, Employer Support of the Guard and Reserve (ESGR), Department of Defense. The on-site Network Engineer shall perform the following minimum duties:
• Assisting the System Administrators • Assisting the Lead Network Engineer in developing and implementing IT/network plans • Managing network operations using simple network management protocol (SNMP) network management tools • Diagnosing and troubleshooting network problems with network protocol capture/decode analyzers • Planning and building network from open system interconnect (OSI) Layer 1 through Layer 3 • Managing TCP/IP internetworking connectivity to include addressing and subnetting • Monitoring network as defined in the network monitoring plan • Installing, configuring, updating and documenting the physical cable plant • Installing, configuring and managing networking hardware (switches, bridges, hubs, concentrators, transceivers) • Installing, configuring and managing network security (firewalls, IP blocking) • Configuring and managing virtual private networks (VPNs).
Alexandria, VA19 days ago
li>Provide SME engineering services to design, configure, test, implement, and sustain STIG-compliant network and security architectures, including NAC (802.1x), reverse proxy and load balancing, web filtering, DNS/DHCP/IPAM, VPN, wireless/IDS, VDI support, VoIP/VTC/streaming, Check Point firewalls and MDM, NMS tool suites, MPLS architecture, SATCOM support, and DR/COOP planning; perform Tier IV troubleshooting and produce required technical documentation (ECRs, ITRs, NSOs, AARs, test plans/reports, and as-built diagrams). Provide Cloud-certified SME engineering support for on-premises to Cloud migrations, coordinating with CSPs (e.g., Azure, AWS, Oracle, Google Cloud, MilCloud2) and facilitating integration with Secure Cloud Computing Architecture (SCCA) BCAP in multi-cloud environments.
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Troubleshoot complex network issues across LAN, WAN, VPN, SD-WAN, and VoIP environments.Emergent Technologies Inc., a veteran-owned provider of cutting-edge IT and engineering solutions, is seeking a highly experienced Network Engineer (SME Level) with deep expertise in Network Access Control (NAC) and CISCO network appliances. If you're a senior-level network engineer with deep NAC expertise looking to lead critical infrastructure security efforts, apply now to join Emergent Technologies Inc. in Herndon, VA.
This role is responsible for engineering, operating, and optimizing commercial, off-the-shelf network monitoring, management, and automation solutions, while also leveraging automation frameworks, cloud-native architectures, and Generative AI (GenAI) to maximize operational uptime and efficiency. Basic Qualifications • 2+ years of relevant work experience and a Bachelors degree, OR 5+ years of relevant work experience Preferred Qualifications • 3 or more years of work experience with a Bachelor's Degree or more than 2 years of work experience with an Advanced Degree (e.g.
p>About BAE Systems Intelligence & Security BAE Systems, Inc. is the U.S. subsidiary of BAE Systems plc, an international defense, aerospace and security company which delivers a full range of products and services for air, land and naval forces, as well as advanced electronics, security, information technology solutions and customer support services. Demonstrated 15 years on-the-job competencies in engineering, configuring, implementing, and troubleshooting in the Network Telecommunication field with diverse hands-on experience including all of the following:
Routing, switching, load balancer and firewalls.
Arlington, VA30+ days ago
p>Network Development Engineers perform high quality network and/or systems operations, deployments, scaling, technology refresh, sustaining engineering, best practices application, optimization, internal/external customer interactions, and produce appropriate technical documentation. This takes the form of creating and defending High Level Design (HLD) and Low Level Design (LLD) documents, working with internal stakeholders to influence technology roadmaps, constructing and testing your solutions, and providing support to the teams that will deploy and operate these designs.
Washington, Washington, DC30+ days ago
ul style="margin: 0px; padding: 0px; font-family: verdana;">Disability, Life Insurance, and AD&D . - Tuition and Technical Training Reimbursement .
We're looking for someone with strong hands-on experience in Cisco ISE, Cisco Firepower, and enterprise network security to make a direct impact on a critical national security mission. AMERICAN SYSTEMS, a 100% employee-owned company, is seeking a Lead Network Engineer to support secure network operations in a highly classified environment in Arlington, VA.
Arlington, Virginia22 days ago
Overview: AMERICAN SYSTEMS, a 100% employee-owned company, is seeking a Lead Network Engineer to support secure network operations in a highly classified environment in Arlington, VA.
We’re looking for someone with strong hands-on experience in Cisco ISE, Cisco Firepower, and enterprise network security to make a direct impact on a critical national security mission.
Strong analytical and problem-solving skills; demonstrated ability to analyze complex situations, determine course of action and act promptly and effectively when problems arise. This individual will work within a small, mission focused team of network and systems engineers to implement technical solutions addressing challenging collaboration and data protection problems.
li> Demonstrated knowledge of cloud networking and routing to include VPCs, subnetting, security groups, route tables, peering connections, direct connect direct connect gateway, IPv4, IPv6, dynamic routing, network performance monitoring, vpn, firewall, route53, MTIPS, and IPSEC. What Would Be Nice to Have :- Professional certifications related to cloud networking, such as AWS Certified Advanced Networking - Specialty, Google Cloud Certified - Network Engineer, or Microsoft Certified: Azure Network Engineer Associate.
Herndon, Virginia30+ days ago
Overview: SME Network Engineer
Herndon, VA
TS/SCI with Poly
At Bcore, our strength comes from how we deliver impact to the mission. Join our growing team supporting customer missions as a SME Network Engineer in Herndon, Virginia.
To be granted access pursuant to US Export Control laws candidate must be either a a United States citizen or national b a person lawfully admitted for permanent residence of the United States i.e. Green Card" holder or c an INS-approved refugee or asylum holder who has applied for naturalization within six months of the date the individual first became eligible and if not yet naturalized is still actively pursuing naturalization if 2 years have passed since the date of application to be granted access pursuant to US Export Control laws. Network Engineer IT Infrastructure Solutions Department Summary The Network Engineer is part of a team of engineers who design build maintain and support the Firms global portfolio of networking infrastructure solutions.
Springfield, VA29 days ago
Performs these functions across using COTS and GOTS tools to test/validate physical media, Operating Systems, TCP protocol stacks, routing protocols, routed protocols and network hardware components primarily on Cisco devices. Uses monitoring, performance analysis systems, network management software, and hardware management software to troubleshoot and isolate problems, gauge WAN and LAN performance and activity.
Herndon, Virginia26 days ago
Responsibilities:
We are seeking a talented and experienced Network Engineer with a specialized focus on Firewalls, particularly with expertise in CISCO, Palo Alto, and Netscaler firewall network devices and associated management software to join our technology-based program supporting a key Government customer. Overview:
Network Engineer
Herndon, VA
TS/SCI with Poly
At Bcore, our strength comes from how we deliver impact to the mission.
Fort Belvoir, VA30+ days ago
Original Posting: April 22, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Senior Network Engineer - Army TENCAP | TS/SCI | Ft. Belvoir, VA Leidos is seeking a Senior Network Engineer to support the development and integration of advanced ISR technologies within the Army TENCAP portfolio.
p>SAIC is seeking a highly skilled and motivated Senior Network Engineer to join our team in providing technical support to a dynamic program encompassing the management, design, deployment, operations, and maintenance of over 75 IT and network communication systems. Expertise in mitigating risks of anonymous communications, including detecting fraudulent activity, analyzing network traffic, managing digital footprints, and countering obfuscation and evasion techniques.
Our three operating units: Space Electronic Systems (SES), Integrated C4ISR Systems (ICS) and Optical Precision Systems (OPS), develop within the agile framework which enables us to produce proven, purpose-built systems that solve our customers' mission critical challenges across space, air, land, and sea. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor's legal duty to furnish information.
Our three operating units: Space Electronic Systems (SES), Integrated C4ISR Systems (ICS) and Optical Precision Systems (OPS), develop within the agile framework which enables us to produce proven, purpose-built systems that solve our customers' mission critical challenges across space, air, land, and sea. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor's legal duty to furnish information.
McLean, Virginia18 days ago
p>This role is ideal for an engineer who operates at the expert protocol level, leads through technical depth and execution excellence, and is trusted to design and deploy highly resilient enterprise and data center networks within a defined engagement period. It is a senior, hands-on engineering engagement for a network engineer who wants to remain focused on designing and implementing complex networks rather than managing people or budgets.
Herndon, Virginia30+ days ago
p>Pay Range: There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications.
Job Title: Senior Network Engineer (VOIP)
Job Category: Information Technology.
Washington, DC21 days ago
Keywords: Network Engineer Tier 2, Network Engineer, Cisco IOS, Cisco NX‑OS, Palo Alto Firewall, VPN, LAN WAN, Network Security, TACLANE, GEMOne, DOE Q Clearance, Top Secret Clearance, NNSA, Department of Energy, Onsite Network Engineer, Washington DC. Responsibilities for the Network Engineer (Tier 2) include: Install, configure, maintain, and optimize LAN and WAN infrastructure including routers, switches, VPN appliances, firewalls, load balancers, and security devices.
p>Keywords: Network Engineer Tier 2, Network Engineer, Cisco IOS, Cisco NX‑OS, Palo Alto Firewall, VPN, LAN WAN, Network Security, TACLANE, GEMOne, DOE Q Clearance, Top Secret Clearance, NNSA, Department of Energy, Onsite Network Engineer, Washington DC. Hands‑on experience with Cisco routers and switches (IOS/NX‑OS), Palo Alto Next‑Generation Firewalls, VPNs, and network security devices; experience with General Dynamics TACLANE and/or GEMOne preferred.
Chantilly, Virginia16 days ago
Our engineers work to collect, process, and feed analytic tools, turning data into intelligence in response to immediate mission needs, with direct impact on real world situations. Work on this program takes place in McLean, VA and in various field offices throughout Northern VA (we cannot support remote work) and requires a TS/SCI + Polygraph clearance (acceptable to this customer).
li>Experience designing, supporting, and troubleshooting high-bandwidth, low-latency multi-site networks, including Cisco routing/switching, Cisco ISE, firewalls, VPNs, optical transport, and high-capacity data circuits (Juniper and Ciena experience strongly valued). As a Lead Network Engineer working for AMERICAN SYSTEMS in a high-performance computing environment, you will:
- Architect and engineer high-bandwidth, low-latency inter-site network solutions connecting geographically dispersed HPC sites.
Sikich CPA LLC is a licensed CPA firm that provides audit and attest services to its clients, and Sikich LLC and its subsidiaries provide tax and business advisory services to its clients. Through a dedicated focus on key business priorities and intentionally creating a rewarding employee experience, Tantus, a Sikich Subsidiary has developed into a highly regarded provider of professional services and a sought-after employer of choice.
Washington, DC30+ days ago
You can access our privacy policy at Privacy Policy. Desired Skills- Certifications: Arista Configuration Essentials, CCNA/CCNP, or Juniper certification (Automation & DevOps, Cloud, Data Center, Enterprise Routing and Switching, Junos Security, or Service Provider tracks).
Washington, DC30+ days ago
Degree: Technical BA/BS degree; Experience: 5 years with bachelor's degree; Commensurate: High School diploma or associate degree plus a minimum of 7 years performing as a Network Engineer on large, complex programs; Specific Skills: Proficient with MS Office Suite (Excel, Word, PowerPoint, Visio); Demonstrates excellent communication and interpersonal skills, with the ability to work effectively with their team and customers; Certification(s): CCNA or equivalent; CompTIA Security+; Clearance: Secret. ActioNet is seeking a Network Engineer JR to join our team in Multiple CONUS sites across ME (Bangor), MI (Battle Creek), TN (Chattanooga), NH (Portsmouth), Vienna(Virginia), WI (Madison, Milwaukee), Illinois (Chicago) and OH ( Dayton, Columbus, Toledo, Springfield).
Arlington, VA30+ days ago
As an on-site AMERICAN SYSTEMS Lead Network Engineer, youll take a hands-on leadership role ensuring secure, reliable network operations supporting U.S. Government customers. Responsibilities As a Lead Network Engineer, you will: Configure and troubleshoot Cisco Identity Services Engine (ISE) to protect data and control access to classified networks.
Sterling, Virginia30+ days ago
Our capabilities include cyber space operations, cyber defense and resiliency, vulnerability research, ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, and software modernization. Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to meet our customers’ most demanding challenges.
Lorton, Virginia30+ days ago
p style="margin-top:0pt;margin-bottom:0pt">Named one of theBest Places to Work in the Washington DC area for 12 consecutive years, Valiant is proud of our employee-centric culture and commitment to excellence. By submitting your resume for this position, you authorize Valiant Solutions to share your resume, as well as, personal information included on the resume, with its subsidiaries, affiliates and teaming partners for the purpose of considering you for this position and other available positions requiring comparable skills, education and experience.
p>TCG is recognized for treating employees well, in fact, in 2025 The Washington Post named TCG as a "Top Workplace" for the eleventh straight year based on how our employees feel about the company, the benefits TCG offers, and the work/life balance that our staff achieves. Networking experience in the following: firewalls/routers/switch management, Cisco VPN, ipv4/ipv6, OSPF, BGP.
This individual will play a key role in ensuring network security, performance, reliability, and scalability while supporting modernization and compliance initiatives.
Key Responsibilities- Support enterprise network security operations across Palo Alto environments. The ideal candidate will bring deep expertise in Palo Alto technologies, firewall administration, network segmentation, and infrastructure security operations.
Washington, DC15 days ago
Operate and Maintain a Cisco Software Defined Access Solution.
• Analyze network topologies and traffic and capacity requirements
• Assist/lead the creation of technical manuals, operating procedures and other support documentation
• Provide Tier 3 technical support and troubleshooting for client/user support
• Perform server and virtual network administration duties to maintain operations
• Assist with site surveys, collecting requirements, and planning wireless deployments
• Participate in occasional travel as required for installations and support.
• Summary:
All Native Group (ANG) is seeking a well-qualified Enterprise Wireless Network Engineer with experience in Cisco Software Defined Networking (SDN) to support a Wireless to support a Wireless Implementation and Support contract in Washington DC.
The Wireless Network Engineer is expected to be a business professional with experience in Cisco WLAN technology platforms.
Springfield, Virginia30+ days ago
p style="text-align:inherit"/>The Opportunity:
F5 Network Engineer performs research, requirements analysis, design, installation, documentation, troubleshooting, and sustainment of local- and wide-area network hardware and services.
Pay Range:
There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications.
Arlington, Virginia5 days ago
This senior-level subject-matter expert is responsible for the architecture, engineering design, testing, implementation, and integrity of the Agency's enterprise-wide network infrastructure, including Wide Area Network (WAN), Local Area Network (LAN), Software-Defined Networking (SDN), cloud interconnectivity, Domain Name System (DNS), wireless, and related enterprise network tools in both on-premises and cloud environments (commercial, private, and hybrid).
- Serve as the primary technical authority for all network engineering, design, testing, deployment, and Tier-3 escalation support across the enterprise, cloud, and hybrid environments. This partnership strengthens our ability to deliver results by expanding our technical depth, operational reach, and access to a broader bench of proven experts, ensuring our customers continue to receive best-in-class cybersecurity support.
p>Must have at least 5 years of experience with configuring Cisco IOS and/or Cisco NX-OS in a datacenter environment including experience configuring VLANs, Routing, and security settings. Seeking an experienced Network Engineer that will be responsible for managing and maintaining the organization's complex and secure network infrastructure.
Chantilly, Virginia26 days ago
Overview: Mid-level Network Engineer
Chantilly, VA
TS/SCI with Poly
At Bcore, our strength comes from how we deliver impact to the mission. Network infrastructure engineering services are comprised of core infrastructure, voice and video engineering, field engineering, application management and development for networks, network analytics, firewalls, network access controls and bandwidth service delivery.
The ITP mission is to identify insider threats to the department by utilizing advanced analytics, monitoring, and data correlation which in turn help address and eliminate potential threat actors from compromising the DHS mission in safeguarding the homeland. The Digital Modernization Sector at Leidos currently has an opening for a Senior Network Engineer supporting the HEITS Contract as part of the Department of Homeland Security (DHS) Insider Threat Program (ITP).
Washington, District of Columbia9 days ago
div class="job-description-container">About the Role:
Join our team as a Network Engineer/NOC in Washington, DC, where you will play a vital role in maintaining and optimizing our network infrastructure.
Our Approach
Justus Corporation offers services from a technical standpoint and uniquely provide an engineering perspective.
Washington, DC30+ days ago
Experience: 7 years with bachelors degree; Commensurate: High School diploma or associate degree plus a minimum of 9 years performing as a Network Engineer on large, complex networks. Specific Skills: Proficient with MS Office Suite (Excel, Word, PowerPoint, Visio), AutoCAD; demonstrates excellent communication and interpersonal skills, with the ability to work effectively with their team and customers.
ul>Degree: Technical BA/BS degree; Experience: 7 years with bachelor's degree; Commensurate: High School diploma or associate degree plus a minimum of 9 years performing as a Network Engineer on large, complex networks; Specific Skills: Proficient with MS Office Suite (Excel, Word, PowerPoint, Visio), AutoCAD; demonstrates excellent communication and interpersonal skills, with the ability to work effectively with their team and customers; Certification(s): CCNP or equivalent; CompTIA Security+; Clearance: Secret. Leads site surveys and network assessments to determine the best hardware and software components for network upgrades to ensure networks are reliable, efficient, and secure.
The Senior Network Engineer should have extensive experience in the design, implementation, and support of complex data and voice networks, provisioning and troubleshooting wide area services, diagnosing and resolving equipment configuration and network problems, monitoring network faults and performance, and supporting cabling infrastructures to support voice and data. Senior network engineering support to include advanced data design, upgrades, troubleshooting, and Level 3 operational support for the campus and wide area networks.
Herndon, Virginia30 days ago
li>System integration and testing of built packages, preparation of customer system documentation, conducting site surveys as needed prior to installation, drawings of rack elevations, training of onsite customer personnel on installed packages, test, inspection, verification of all customer communications systems ensuring compliance with COMSEC policies and procedures and project management requirements.
CACI is looking for a Field Engineer that can maintain a strong awareness of technical equipment; be able to apply the Sponsor’s project management model for development and installation efforts; and provide build, testing, analysis, deployment, and troubleshooting/lifecycle support for innovative hardware/software/ network systems and applications.