Senior ISSE/Penetration Tester TS/SCI Polygraph Leidos Holdings IncSenior ISSE/Penetration Tester TS/SCI PolygraphAnnapolis Junction, MD$131,300–$237,350 / yearThe selected candidate will have a range of day-to-day responsibilities across multiple activities, including the following: Validating and verifying system security requirements and establishing system security designs for large-scale systems, major system elements, and interfacing systems that are part of a large complex network environment with geographically distributed components. Must have experience developing and implementing integrated security services management processes, such as assessing and auditing network penetration testing, anti-virus planning assistance, risk analysis, and incident response.
Senior Isse/Penetration Tester Ts/Sci Polygraph Leidos Holdings Inc.Senior Isse/Penetration Tester Ts/Sci PolygraphAnnapolis Junction, MD$131,300–$237,350 / yearThe selected candidate will have a range of day-to-day responsibilities across multiple activities, including the following: Validating and verifying system security requirements and establishing system security designs for large-scale systems, major system elements, and interfacing systems that are part of a large complex network environment with geographically distributed components. Must have experience developing and implementing integrated security services management processes, such as assessing and auditing network penetration testing, anti-virus planning assistance, risk analysis, and incident response.
DevOps Engineer Leidos Holdings IncDevOps EngineerReston, VA$107,900–$195,050 / yearThe DevOps Engineer (Tier 3) will be responsible for creating, testing, updating, and maintaining source code for custom software applications and services written in various programming languages and implemented in both Windows and Linux Operating System environments. 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.
NewIllumio Zero Trust Platform Engineer Booz Allen HamiltonIllumio Zero Trust Platform EngineerReston, VirginiaAssociate’s degree and 5+ years of experience supporting IT projects and activities, Bachelor’s degree and 3+ years of experience supporting IT projects and activities, or Master’s degree and 1+ years of experience supporting IT projects and activities. Ability to obtain a DoD 8570 IAT Level III Certification such as SecurityX, CASP+, CCNP Security, CISA, CISSP, CISSP Associate, GCED, GCIH, or CCSP Certification within 45 days of start date.
Illumio Zero Trust Segmentation Platform Engineer - TS/SCI CI Poly Guidepoint Security LLCIllumio Zero Trust Segmentation Platform Engineer - TS/SCI CI PolyWashington, DCAssociate's degree and 5+ years of experience supporting IT projects and activities, Bachelor's degree and 3+ years of experience supporting IT projects and activities, or Master's degree and 1+ years of experience supporting IT projects and activities. Ability to obtain a DoD 8570 IAT Level III Certification such as SecurityX (formerly CASP+), CCNP Security, CISA, CISSP (or Associate), GCED, GCIH, CCSP certification within 45 days of CSSP-IS date (or offer accept if candidate already has CSSP-IS Cert).
Cyber Solutions Architect Booz Allen HamiltonCyber Solutions ArchitectUsa, MarylandLead the visioning, technical architecture, development, and implementation of strategic cybersecurity solutions using various systematic approaches, listening to multiple viewpoints, determining the course of action for addressing complex problems, architecting solutions, authoring original text, and leading consensus-building discussions with colleagues and clients in multiple settings. Work closely with government clients and industry partners to define, develop, and oversee the design and implementation of approaches and methods that successfully translate complex functional requirements into cyber solutions.
Senior Cybersecurity Architect DAn SolutionsSenior Cybersecurity ArchitectReston, VAFull timeEducation & ExperienceCandidates must meet one of the following:Associate's Degree + 10 years supporting IT projects and activitiesBachelor's Degree + 8 yearsMaster's Degree + 6 years12+ years supporting IT projects and activities in lieu of a degreePreferred QualificationsExperience in a cybersecurity compliance, operations, or engineering leadership role. REQUIRES AN EXISTING/ACTIVE TS/SCI WITH CI POLYGRAPH - NO REMOTE WORK, MUST WORK ON SITELocation: Reston, VA or Washington, DCFunding Status: FundedPosition OverviewDAn Solutions is seeking a Senior Cybersecurity Architect to lead the architecture and design of innovative cybersecurity solutions supporting secure federal networks and mission-critical environments.
NOSC Analyst BAE Systems PlcNOSC AnalystSterling, VA$97,008–$164,914 / yearExtensive knowledge of network topologies, protocols (e.g., TCP/IP, ICMP, HTTP/S, DNS, SSH, SMTP, SMB), and experience with tools/systems including AWS, Cisco, Splunk SIEM, Splunk Forwarders, IDS/IPS, VMware, SSL Decryption, proxy and DLP operations, Windows and Linux based endpoints. 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.
Senior ISSE/Penetration Tester TS/SCI Polygraph LeidosSenior ISSE/Penetration Tester TS/SCI PolygraphAnnapolis Junction, MarylandThe selected candidate will have a range of day-to-day responsibilities across multiple activities, including the following: Validating and verifying system security requirements and establishing system security designs for large-scale systems, major system elements, and interfacing systems that are part of a large complex network environment with geographically distributed components. April 28, 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.
DevOps Engineer LeidosDevOps EngineerReston, VirginiaThe DevOps Engineer (Tier 3) will be responsible for creating, testing, updating, and maintaining source code for custom software applications and services written in various programming languages and implemented in both Windows and Linux Operating System environments. September 10, 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.
Product Security Analyst HackerOneProduct Security AnalystWashington, District of ColumbiaRemoteEvaluate vulnerability reports submitted by security researchers to determine validity, severity, exploitability, and business impact for HackerOne customers using Data-Driven Decision Making and established security frameworks such as CVSS. The HackerOne Platform unites agentic AI solutions with the ingenuity of the world’s largest community of security researchers to continuously discover, validate, prioritize, and remediate exposures across code, cloud, and AI systems.
Product Security Analyst HackerOne IncProduct Security AnalystWashington, DCRemote$135,000–$155,000 / yearEvaluate vulnerability reports submitted by security researchers to determine validity, severity, exploitability, and business impact for HackerOne customers using Data-Driven Decision Making and established security frameworks such as CVSS. The HackerOne Platform unites agentic AI solutions with the ingenuity of the world's largest community of security researchers to continuously discover, validate, prioritize, and remediate exposures across code, cloud, and AI systems.
SIGINT Analyst (Technical Targeting Officer - TTO) CACISIGINT Analyst (Technical Targeting Officer - TTO)Annapolis Junction, MarylandAs a CACI-M&ES SIGINT Analyst (Technical Targeting Officer - TTO), you will serve as a key member of a threat analyses and strategic planning team supporting the Joint Cyber Operations Group (JCOG) and in direct support of US Army Special Operations Command (USASOC), the Theater Special Operations Commands and other Strategic Partners across the Special Operations Forces Emerging Threat, Operations and Planning Support (SOFETOPS) enterprise. Proficient in computer network exploitation (CNE) capable of performing threat analysis including assessments identifying and describing threat actors, activities, platforms, and targets-as well as how they interact-and providing an understanding of the presence, intent, and capabilities of the identified threats.
SailPoint IdentityIQ Engineer System OneSailPoint IdentityIQ EngineerWashington, DC$79.55 / hourRequirements Bachelor’s Degree in Computer Science, Information Technology, or a related field or equivalent work experience (additional 4 years for non-degree holders). Customize SailPoint IIQ product features as needed, including developing custom workflows and workflows management.
Cybersecurity Architect Guidepoint Security LLCCybersecurity ArchitectReston, VAAbility to obtain a DoD 8570 IAT Level III Certification such as SecurityX (formerly CASP+), CCNP Security, CISA, CISSP (or Associate), GCED, GCIH, CCSP certification within 45 days of CSSP-IS date (or offer accept if candidate already has CSSP-IS Cert) or 45 days after CSSP-IS if CSSP-IS is also needed. By taking a three-tiered, holistic approach for evaluating security posture and ecosystems, GuidePoint enables some of the nation's top organizations, such as Fortune 500 companies and U.S. government agencies, to identify threats, optimize resources and integrate best-fit solutions that mitigate risk.
Cloud Security Engineer - Active TS/SCI with CI Poly ENS Solutions, LLCCloud Security Engineer - Active TS/SCI with CI PolyWashington, DCHS diploma or GED and 7+ years of experience with supporting IT projects and activities, Associate’s degree and 5+ years of experience supporting IT projects and activities, Bachelor’s degree and 3+ years of experience supporting IT projects and activities, or Master’s degree and 1+ years of experience supporting IT projects and activities. ENS 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.
Cribl Engineer - Active TS/SCI with CI Poly ENS Solutions, LLCCribl Engineer - Active TS/SCI with CI PolyWashington, DCHS diploma or GED and 7+ years of experience with supporting IT projects and activities, Associate’s degree and 5+ years of experience supporting IT projects and activities, Bachelor’s degree and 3+ years of experience supporting IT projects and activities, or Master’s degree and 1+ years of experience supporting IT projects and activities. ENS 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.
Forescout Engineer - Active Ts/Sci With CI Poly ENS Solutions, LLCForescout Engineer - Active Ts/Sci With CI PolyReston, VAENS 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.
ForeScout Engineer Booz Allen HamiltonForeScout EngineerReston, VirginiaExperience 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. You’ll perform hands-on evaluation, implementation, and operation of leading security cyber defense tools and technologies, and apply in-depth defense strategies to large and complex networks to rapidly identify vulnerabilities and threats, prioritize response actions, and develop effective countermeasures.
Forescout Engineer Booz Allen HamiltonForescout EngineerReston, Virginia$99,000–$225,000 / yearExperience 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. You’ll perform hands-on evaluation, implementation, and operation of leading security cyber defense tools and technologies, and apply in-depth defense strategies to large and complex networks to rapidly identify vulnerabilities and threats, prioritize response actions, and develop effective countermeasures.