Information System Security Professionals Isso Isse Leidos Holdings Inc.Information System Security Professionals Isso IsseAnnapolis Junction, MD$131,300–$237,350 / yearOur talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. Apply system security engineering expertise in areas such as system security design, life cycle, risk management, and security testing, using industry system security engineering methodologies.
Technical Lead/Chief Security Architect Revolutional, LLCTechnical Lead/Chief Security ArchitectWashington, DCRemote$200,000–$250,000 / yearMaster's degree in Cybersecurity, Mathematics, Engineering, Computer Science, Information Technology, Information Systems Architecture, Telecommunications Systems Design, Architecture Implementation, Information Systems Integration, Software Development Methodologies, Security Engineering, or Network Systems Communications Management. Advance the development of legacy and new health IT digital architectures spanning cloud, mobile, IoT, APIs, VR/XR, 5G, Post-Quantum Cryptography (PQC), Data Loss Prevention (DLP), cryptography, quantum computing, and Artificial Intelligence (AI) technologies.
Senior Cyber Security Security Engineer - Comply-to-Connect (C2C) CACISenior Cyber Security Security Engineer - Comply-to-Connect (C2C)Chantilly, VirginiaPay 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. This role centers on engineering and sustaining Comply‑to‑Connect (C2C) capabilities that protect critical enterprise systems, enhance visibility, and enable mission-focused decision making.
Ground Systems Engineer & Architect UmbraGround Systems Engineer & ArchitectReston, VA$195,000–$235,000Working closely with software, hardware, network, cybersecurity, and mission engineering teams, the Ground Systems Engineer & Architect ensures successful delivery of modern ground infrastructures leveraging virtualization, containerized services, DevSecOps practices, and enterprise IT technologies to enable reliable mission operations for U.S. Government and Intelligence Community customers. Enable Mission Operations & Modern Engineering Practices: Collaborate across multidisciplinary engineering teams to deliver mission-ready ground capabilities using systems engineering best practices, DevSecOps, Infrastructure as Code (IaC), automation, and modern software deployment pipelines supporting U.S. Government and Intelligence Community programs.
Forescout Engineer - Active Ts/Sci With CI Poly ENS Solutions, LLCForescout Engineer - Active Ts/Sci With CI PolyCollege Park, MDENS consults for the Department of Defense (DoD) and Intelligence Community (IC) providing innovative solutions in the core competency area of Identity, Credential and Access Management (ICAM), Software Development, Cyber and Network Security, System Engineering, Program/Project Management, IT support, Solutions, and Services that yield enduring results. Experience with network engineering, including physical or logical such as installation and activation of ports, configuration of switches, and LANS, VLANS, and network FW, or appliances or network administration services such as Active Directory, Guests LANS, and domain management.
Operational Systems Engineer CACIOperational Systems EngineerChantilly, VirginiaPay 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. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.
Data Center Security Installation Project Manager (Project Leader 1) - Tysons, VA M.C. Dean, IncData Center Security Installation Project Manager (Project Leader 1) - Tysons, VATysons , Virginia$125,120–$172,040 / yearFull timeAs part of (SES) Strategic Business Unit you will be part of a team that designs, engineers, integrates, operates and maintains electronic security services inclusive of intrusion detection, access control, biometric authentication, video surveillance, audio visual, it systems, perimeter defense and command and control systems for federal, local and commercial customers across high-growth markets. Responsibilities: A Data Center Security Installation Project Manager is responsible for assisting with the overall administration, organization, and implementation of large data center electronic security installation projects.
NewSenior SOC Analyst - Active Top Secret (TS) Security Clearance Macpower Digital Assets Edge Private LimitedSenior SOC Analyst - Active Top Secret (TS) Security ClearanceWashington, DC$130,000 / yearPosition Requirements: Eight years of security intrusion detection examination experience involving a range of security technologies that produce logging data, including vast area networks host and Network IPS/IDS/HIPs traffic event review, server web log analysis, raw data logs; the ability to communicate clearly both orally and in writing. The analyst must be able to support detailed discovery and analysis of intrusion detection security events traversing the Agency's network and assure quality work.
Tier II Network Technician LeidosTier II Network TechnicianChantilly, VirginiaThe Digital Modernization Sector at Leidos has an opening for a Tier II Network Technician to support the customer’s computer data communications systems, in providing design specifications, testing and inspections for computer networks; plan and implementing upgrades; as well as, analyzing and organizing corresponding hardware and software combined solutions through network modeling. August 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.
NOC Engineer LeidosNOC EngineerChantilly, VirginiaAugust 14, 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. Real-Time Monitoring: Watch over network performance, server health, bandwidth utilization, and core infrastructure via enterprise monitoring tools, such as SolarWinds and Splunk.
Target Digital Network Analyst (TDNA) CymertekTarget Digital Network Analyst (TDNA)Annapolis Junction, MarylandDigital Network Analyst, Cyber Network Analyst, Network Exploitation Specialist, Cyber Operations Analyst, Intelligence Network Analyst, SIGINT Analyst, Threat Intelligence Analyst, Network Vulnerability Analyst, Cybersecurity Analyst, Intrusion Detection Analyst, etc. Cybersecurity, Computer Science, Information Technology, Network Engineering, Intelligence Studies, Data Analytics, Information Systems, Software Engineering, Electrical Engineering, Cyber Operations, etc.
Information Systems Security Manager (ISSM) CymertekInformation Systems Security Manager (ISSM)Reston, VirginiaInformation Systems Security Manager (ISSM), Cybersecurity Manager, IT Security Manager, Information Assurance Manager, Security Compliance Manager, Network Security Manager, Cyber Defense Manager, Security Operations Center (SOC) Manager, Risk Management Manager, Security Program Manager, etc. Cybersecurity, Information Systems, Computer Science, Information Technology, Computer Engineering, Information Assurance, Network Security, Systems Engineering, Risk Management, Data Science, etc.
Network Architect Emergent Technologies IncNetwork ArchitectReston, VAFull timeThis position is ideal for a self-driven, detail-oriented professional with deep knowledge in enterprise network design, implementation, automation, and cloud integration. Emergent Technologies Inc. is seeking an experienced Senior Network Engineer to join a mission-focused program supporting a key government customer.
Senior Information Systems Security Engineer (ISSE) DAn SolutionsSenior Information Systems Security Engineer (ISSE)Reston, VAFull timeNo Telework.· Designs, develops, and recommends integrated security system and physical control solutions that will ensure proprietary/confidential data and systems are protected· Assist team in DIA's Authorization and Accreditation (A&A) process using RMF across the design lifecycle for classified systems obtaining and maintaining Interim Authorization to Test (IATT), Authority to Connect (ATC) and Authorization to Operate (ATO)· Offers technical engineering services for the support of integrated security systems and solutions, managing information-related risks effectively· Works closely with the client during the strategic design process to translate security and business requirements into actionable technical designs· Configures and validates secure systems and physical controls, and tests security products and systems to detect security weakness· Develop comprehensive system test plans (STP) to assess the security posture of the information systems· Analyze scan results and security findings to prioritize remediation efforts and implement corrective measures· Participate in incident response activities and assist in the resolution of security incidents as needed Requirements:· Exhibits advanced Windows administration capabilities and Linux proficiency for optimal system management· Security credentials, certifications, and experience commensurate with the job description· Practical experience deploying, maintaining, and troubleshooting security tools· Demonstrates the ability to critically assess current practices, identify deficiencies, propose innovative solutions, and effectively implement these improvements· Thrives in a fast-paced, complex environment; displays exceptional poise and an unwavering commitment to hard work· Displays excellent problem-solving abilities and attention to detail· Experience with each of the following security tools: Assured Compliance Assessment Solution (ACAS), Trellix, Splunk, and Security Technical Implementation Guide (STIG)'s· Collaborate with stakeholders to identify security requirements and ensure alignment with organizational objectives· Stay abreast of the latest security trends, technologies, and best practices to continually enhance the security posture of the information systems· A Bachelor's Degree from an accredited institute in an area applicable to this position and four (4) years of relevant experience· An additional four (4) years of relevant experience may be substituted for the bachelor's degree· Must presently be 8570 compliant (IAT Level 2 preferred); must be 8570 compliant (IAT Level 2) by date of security indoctrination with any necessary continuing education (CE) for certification Desired Qualifications:· Familiar with tiered security environments (U, S, TS)· Deep understanding of Trellix antivirus suite of products· Knowledge of Splunk architecture and experience structuring multi-level queries· Windows expert - capable of advanced Powershell scripting and general administrative functions· Experience with one or more commercial government cloud service provider's system accreditation process· Experience as a Cybersecurity Control Assessor for SAP· Experience with Ongoing Authorizations and Assessments· Experience with C2S Cloud, or DevOpsSec Salary Range Disclaimer: The posted salary range represents the good-faith minimum and maximum compensation DAn Solutions expects to pay for this position. ISSE are as follows:· Provides technical expertise to ensure the network systems meet DIA C&A and IA requirements and are properly certified and accredited· Responsibilities are full-time on customer's onsite and will cover classified programs and Special Access Programs (SAP).
Principal Network Evaluator (NE-4) LeidosPrincipal Network Evaluator (NE-4)Linthicum Heights, MarylandMission Focus : Conduct proactive computer network defense activities by analyzing systems and networks to identify vulnerabilities, detect network intrusions, monitor security events, assess attack surfaces, and develop operational courses of action to mitigate cyber threats. Knowledge of Network Defense Integrity (NDI) Methodology, digital forensics, intrusion detection systems, vulnerability scanning technologies, MITRE ATT&CK, NIST cybersecurity frameworks, and scripting languages.
Helpdesk Technician Tier III - Active Ts/Sci With CI Poly ENS Solutions, LLCHelpdesk Technician Tier III - Active Ts/Sci With CI PolyWashington, DCENS consults for the Department of Defense (DoD) and Intelligence Community (IC) providing innovative solutions in the core competency area of Identity, Credential and Access Management (ICAM), Software Development, Cyber and Network Security, System Engineering, Program/Project Management, IT support, Solutions, and Services that yield enduring results. Ensures all problems reported by end users have been adequately documented and controls exist so only authorized staff can archive the end users' entries, as well as determine if there are sufficient controls to escalate issues according to priority.
Helpdesk Technician Tier III - Active TS/SCI with CI Poly ENS Solutions, LLCHelpdesk Technician Tier III - Active TS/SCI with CI PolyWashington, DCENS consults for the Department of Defense (DoD) and Intelligence Community (IC) providing innovative solutions in the core competency area of Identity, Credential and Access Management (ICAM), Software Development, Cyber and Network Security, System Engineering, Program/Project Management, IT support, Solutions, and Services that yield enduring results. Ensures all problems reported by end users have been adequately documented and controls exist so only authorized staff can archive the end users' entries, as well as determine if there are sufficient controls to escalate issues according to priority.
Cloud Security Architect Booz Allen HamiltonCloud Security ArchitectMcLean, VirginiaOnsite : If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role. You’ll work closely with stakeholders, Security and Compliance teams, and architects to implement secure cloud solutions, design assessment methodologies, and establish continuous monitoring strategies.
Senior Cybersecurity Engineer Fluence EnergySenior Cybersecurity EngineerArlington, VirginiaThe Senior Cybersecurity Engineer works closely with product, software, networking, and operations teams to integrate security into development and deployment processes while ensuring alignment with business and operational needs. The Senior Cybersecurity Engineer is responsible for implementing and advancing cybersecurity engineering practices across Fluence software products, operational technology (OT) environments, and supporting infrastructure.
NewCisco SD-WAN Engineer LeidosCisco SD-WAN EngineerOdenton, MarylandAugust 24, 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. Implement and maintain Cisco Catalyst SD-WAN Manager/vManage, Cisco Catalyst SD-WAN Controller/vSmart, Cisco Catalyst SD-WAN Validator/vBond, and Edge routers.