4,714 Results for

Network Security Jobs in Columbia, MD

Jobs

Network Security Tools Engineer Leidos

Suitland, MD

$107,900–$195,050 / year

The ideal candidate will bring a strong combination of networking and cybersecurity experience , along with hands on experience supporting enterprise security technologies such as SIEM, IDS/IPS, firewalls, endpoint security, packet capture, and network visibility solutions. You will work closely with cybersecurity operations, network engineering, and other technical teams to ensure security tools remain available, properly configured, and capable of providing reliable data to support threat detection and incident response.

30 days ago

Network Engineer- Expert Cherokee Federal

Herndon, VA

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. This program will deliver engineering services for network infrastructure as well as sophisticated enterprise computing infrastructure including end-point devices, data center hosted servers, multi-Cloud services as well as virtualized applications, and storage systems.

4 days ago

Network Engineer SME Cherokee Federal

Herndon, VA

$170,000–$210,000 / year

Bachelor's or Master’s Degrees are preferred in one or more of the disciplines described below where specific skills may include the following: Strong proficiency with Palo Alto & CISCO firewall platforms, Palo Alto firewall platforms is a plus. As a trusted partner for more than 60 federal clients, Cherokee Federal LLCs are focused on building a brighter future, solving complex challenges, and serving the government’s mission with compassion and heart.

4 days ago

Senior Lead Security Engineer Leidos

Arlington, VA

$131,300–$237,350 / year

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 . October 21, 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.

11 days ago

IP Network Test Engineer By Light Professional IT Services

Fort Meade, MD

Expertise in large-scale IP Networking & Testing with backbone routers (Juniper MX and Cisco ASR9K) running ISIS, BGP/MP-BGP (multi AS), MPLS routing protocols, switches and testing gear including traffic generators from IXIA, Spirent Test Center and Agilent N2X. These technologies include network devices (routers, switches, firewalls, and Intrusion Detection Systems (IDS), and services Authentication, Authorization and Accounting (AAA), Access Control List (ACL), secure remote access (i.e Secure shell, Secure VPN, IPSec), and IPv6 capable devices.

9 days ago

Network Design Engineer By Light Professional IT Services

McLean, 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.

8 days ago

Network Engineer Leidos

Camp Springs, MD

$107,900–$195,050 / year

Duties include providing specifications for network architecture design, evaluate and perform assessments of current infrastructure to ensure solution meets customer requirements, conduct proof of concepts and/or recommend hardware/software purchases in support of new technologies on ways to improve the environment. October 7, 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.

25 days ago

Security Software Engineer, IAM Vercel

Washington DC, DC

This is a high-impact, ownership-heavy role: youll define IAM architecture from the ground up, migrate Okta fully behind Terraform, and serve as the subject matter expert who levels up the entire organization on IAM best practices. Were looking for a Security Software Engineer to join our Security team and own Vercels Identity and Access Management strategy - across both corporate and production environments.

Today

Network Engineer- Active Secret Clearance Required Top Echelon

Springfield, VA

Quick Apply

Strong/Deep knowledge of Layer2/Layer3, routing and switching, tunneling, and networking protocols: BGP, OSPF, EIGRP, static, L2TP, IPSEC, VPN, DMVPN, GRE Spanning tree, etherchannel, vlan trunking, 802.1q, HSRP, VRRP, GLBP, VPC, MPLS, and VLANs, as well as experience with enterprise-grade routers and switches. Bachelor's degree in a network engineering/computer engineering related discipline and 10+ years IT network engineering and architecture experience (Tier III and above, network infrastructure design and implementation) with large, complex networks and cloud environments; Masters and 8+ years of related experience; may accept additional experience in lieu of degree.

Today

Network Engineer SME Govcio LLC

Fort Meade, MD

$176,000–$196,000 / year

Early network engineering during IOC de-risks cross-domain integration challenges and positions the capability for rapid expansion during IOC implementation in the next option year. NodeZero platform into Government-approved cloud environments, enabling reliable ingestion of autonomous pentesting data at scale.

1 day ago

Information Assurance Security Engineer (IASE) / Information Systems Security Engineer (ISSE) Leidos

Suitland, MD

$107,900–$195,050 / year

Extensive experience with Intelligence Community (IC), Department of Defense (DoD), Defense Information Systems Agency (DISA), NAVINTEL Cybersecurity, Fleet Cyber Command (FLTCYBERCOM), and DoDIIS processes, tools, systems, reporting mechanisms, and requirements supporting Assessment and Authorization (A&A). In this engineering-focused role, you will actively secure, administer, harden, and maintain critical systems and infrastructure while collaborating across network, systems, cybersecurity, and architecture teams to continuously strengthen and evolve the organization’s overall security posture.

2 days ago

Senior Security Architect Leidos

Bethesda, MD

$131,300–$237,350 / year

Bachelor of Science degree from an accredited university ideally in Computer Science, Information Assurance, Information Security System Engineering or related field with a minimum of 12 years of experience as an Information Systems Security Engineer (ISSE) or System Engineer on programs and/or contracts with the customer space. Design, engineer, and implement enterprise network security architecture spanning next-generation firewalls, intrusion detection and prevention, web and TLS proxies, VPN and encryption services, network access control, DNS security, and east-west security controls.

6 days ago

Zero Trust Lead (Network) Govcio LLC

Washington, DC

$143,230–$145,000 / year

Act as the primary cross-tower coordination point for Zero Trust across Network Operations, Infrastructure/Cloud, IAM, endpoint management, Service Desk, Security Operations, and Engineering; establish priorities, define integration requirements, resolve dependencies, and ensure Zero Trust requirements are translated into sustainable operational controls. Lead Zero Trust technical coordination during high-impact incidents involving access controls or cross-domain dependencies; participate in Major Incident bridges and provide hands-on network troubleshooting when required, while driving long-term remediation of recurring Zero Trust integration issues.

3 days ago

DevSecOps Security Engineer Leidos

Gaithersburg, MD

Remote

$87,100–$157,450 / year

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 are building with an AI-first engineering mindset, embracing emerging AI capabilities and modern development practices to accelerate delivery, improve software quality, and continuously evolve how we design and build mission-critical systems.

30+ days ago

Cyber Security Manager Leidos

Alexandria, VA

$131,300–$237,350 / year

Leidos is seeking an experienced Cyber Security Manager to lead cybersecurity engineering, risk management, authorization, and security operations support for the United States Coast Guard’s Command, Control, Communications, Computers, Cyber, and Intelligence Service Center (C5ISC) in Alexandria, VA. The manager will work closely with Coast Guard cybersecurity leadership, authorizing stakeholders, cloud engineering and operations teams, and program management to strengthen security posture, accelerate compliant delivery, and reduce mission risk.

16 days ago

Azure Cloud Security Engineeer Leidos

Adelphi, MD

$107,900–$195,050 / year

Leidos is seeking an Azure Cloud Security Engineer to design, secure, automate, and sustain Azure Government cloud services supporting the U.S. Army C5ISR Cyber Security Service Provider (CSSP). You'll work with cloud engineers, cybersecurity professionals, and mission partners to integrate security capabilities, automate infrastructure, troubleshoot complex issues, and protect critical defense networks.

2 days ago

Splunk Enterprise and Enterprise Security Administrator Leidos

Suitland, MD

$107,900–$195,050 / year

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 . September 9, 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.

16 days ago

Cyber Security Watch Officer - Evenings Leidos

Washington, DC

$87,100–$157,450 / year

Our CSWOs are principally engaged in the triage of events, cyber incident handling, network analysis and threat detection, trend analysis, metric development, vulnerability information dissemination, and the DoD Cyber Security Service Provider (CSSP) methodology. 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 .

16 days ago

VP, Global Head of Product Security and Risk - Remote Circle

Washington DC, DC

Remote

$317,500–$365,000 / year

This role requires both strategic vision and operational rigor: you will architect the systems, governance models, and organizational capabilities that ensure Circle’s products are designed, launched, and operated with strong, risk-based controls from inception through global scale. Circle’s platform includes the world’s largest regulated stablecoin network anchored by USDC, Circle Payments Network for global money movement, and Arc, an enterprise-grade blockchain designed to become the Economic OS for the internet.

13 days ago

Senior Software Engineer (Go) Tetrate

Washington DC, DC

The Management Plane team is responsible for building the main experience of the platform, including the public-facing APIs users consume to configure, observe, and interact with the mesh, as well as the main workflows and processes that provide multi-tenancy and security to our hybrid and multi-cloud service mesh. • Collaborate closely with product management, UX, and cross-functional teams to design and implement public APIs that will be used to configure all the aspects of a service mesh: networking, security, and observability.

Today

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Network Security Jobs in Columbia, MD

Network Security Tools Engineer Leidos

Network Engineer- Expert Cherokee Federal

Network Engineer SME Cherokee Federal

Senior Lead Security Engineer Leidos

IP Network Test Engineer By Light Professional IT Services

Network Design Engineer By Light Professional IT Services

Network Engineer Leidos

Security Software Engineer, IAM Vercel

Network Engineer- Active Secret Clearance Required Top Echelon

Network Engineer SME Govcio LLC

Information Assurance Security Engineer (IASE) / Information Systems Security Engineer (ISSE) Leidos

Senior Security Architect Leidos

Zero Trust Lead (Network) Govcio LLC

DevSecOps Security Engineer Leidos

Cyber Security Manager Leidos

Azure Cloud Security Engineeer Leidos

Splunk Enterprise and Enterprise Security Administrator Leidos

Cyber Security Watch Officer - Evenings Leidos

VP, Global Head of Product Security and Risk - Remote Circle

Senior Software Engineer (Go) Tetrate

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