4,664 Results for

Network Security Jobs in Columbia, MD

Jobs

Network Security Engineer Credence

McLean, VA

$130,000–$155,000 / year
Quick Apply

Support audit readiness and compliance for CMMC Level 2 and SOC 2, including maintaining network-layer controls in the System Security Plan (SSP), providing firewall and network evidence for assessments, and contributing to ISSO functions as needed. Experience with network monitoring and management platforms such as PRTG Network Monitor, network documentation tools such as NetBox, and network automation and configuration management tools such as Ansible.

Today

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 Software Engineer Johns Hopkins Applied Physics Laboratory (APL)

Laurel, MD

As a member of our team, you will be responsible for the design, development, integration, and test of communications and network software, including protocol implementation, network services, and distributed systems for the Government across numerous departments and agencies. Architect, develop, integrate, and test software-based command and control, secure communication, and networking systems in operationally-realistic environments, working closely with sponsors to ensure mission success.

4 days ago

Long Range Networked Fires Engineer Johns Hopkins Applied Physics Laboratory (APL)

Laurel, MD

As a member of our team, you will provide thought leadership and conduct rigorous analysis and engineering to rapidly develop and demonstrate technologies and integrated systems concepts and solutions that can enable effective joint, integrated, theatre level defense across all operational warfighting domains (land, sea, air, space). Have experience and background in some or all of the following: systems architecture, requirements, interface, and algorithm prototyping and performance analysis, active and passive sensors, target tracking and sensor fusion algorithms and design concepts, command and control concepts, distributed communications systems, advanced kill chain analysis, integrated fire control concepts.

2 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.

Today

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.

Today

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

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 Systems Security Officer (ISSO) Credence

Arlington, VA

$120,000–$170,000 / year
Quick Apply

The ISSO support will include developing and maintaining an IT System Security Compliance Schedule covering 12-month intervals that capture POA&M Action Items, required ITSS reports/updates, Change Control Board Meetings, Scheduled Vulnerability Scans, and Updates to System IT Security Documentation. Experience working within DOJ Offices, Boards, and Divisions (OBDs), with an understanding of unique organizational security policies and security controls implementations within specific IT environments is desired.

Today

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

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

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

Established Cyber Engineer - Capabilities Development Johns Hopkins Applied Physics Laboratory (APL)

Laurel, MD

Have experience in the development of related documents that define processes, solutions, requirements, and specifications for government agencies (military, federal departments/agencies, state, and local) and public organizations to collaborate and achieve greater cybersecurity. APL provides eligible staff with a comprehensive benefits package including retirement plans, paid time off, medical, dental, vision, life insurance, short-term disability, long-term disability, flexible spending accounts, education assistance, and training and development.

1 day ago

Systems Engineer – Data & Analysis Infrastructure Johns Hopkins Applied Physics Laboratory (APL)

Laurel, MD

Possess a BS degree in systems engineering, computer science, computer engineering, engineering science, or related field, or have relevant certifications (such as CompTIA Network+, CompTIA Server+, Linux certifications, etc.) and equivalent experience in systems engineering responsibilities including: developing use cases and requirements, test planning, and performing analysis to balance cost, schedule, and risk. The Signal and Systems Analysis Group (KTA) provides data-driven design and analytical assessments of Anti-Submarine Warfare (ASW) operator in-the-loop system performance to advance the warfighting capabilities of developmental and fielded systems across multiple US Navy domains.

4 days ago

Systems Engineer Leidos

Odenton, MD

$69,550–$125,725 / 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 . Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

30+ days ago

DevSecOps Engineer Leidos

Bethesda, MD

$69,550–$125,725 / year

Leidos is seeking an energetic, motivated, self-starter for this technically sophisticated and challenging engineering position, developing a variety of naval training and simulation systems such as CIAT - Combined Integrated Air and Missile Defense (IAMD) and Anti-Submarine Warfare (ASW) Trainer - YouTube. Implement automated static application security testing, software composition analysis, dependency scanning, container image scanning, infrastructure-as-code scanning, secrets detection, license compliance, and software quality gates.

26 days ago

Senior DevOps Engineer – SaaS Integration Leidos

Adelphi, MD

$131,300–$237,350 / year

Leidos is seeking a Senior DevOps Engineer – SaaS Integration to lead the integration, automation, deployment, and sustainment of mission-critical applications supporting the U.S. Army C5ISR Cyber Security Service Provider (CSSP). 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 .

2 days ago

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Network Security Jobs in Columbia, MD

Network Security Engineer Credence

Network Security Tools Engineer Leidos

Network Software Engineer Johns Hopkins Applied Physics Laboratory (APL)

Long Range Networked Fires Engineer Johns Hopkins Applied Physics Laboratory (APL)

Network Effects Engineer Johns Hopkins Applied Physics Laboratory (APL)

DevOps/Azure Networking - Remote Levi, Ray & Shoup

Senior Lead Security Engineer Leidos

Network Engineer SME Govcio LLC

Information Systems Security Officer (ISSO) Credence

Zero Trust Lead (Network) Govcio LLC

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

Senior Security Architect Leidos

DevSecOps Security Engineer Leidos

Cyber Security Manager Leidos

Azure Cloud Security Engineeer Leidos

Established Cyber Engineer - Capabilities Development Johns Hopkins Applied Physics Laboratory (APL)

Systems Engineer – Data & Analysis Infrastructure Johns Hopkins Applied Physics Laboratory (APL)

Systems Engineer Leidos

DevSecOps Engineer Leidos

Senior DevOps Engineer – SaaS Integration Leidos

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