Sr. Systems Security Engineer (Onsite - Sterling, VA) RTX CorpSr. Systems Security Engineer (Onsite - Sterling, VA)Sterling, VAThis role requires hands-on proficiency across Windows and Linux platforms, network infrastructure, and security control implementation, along with the ability to support accreditation activities and sustain mission‑critical systems. Of course, that wouldn't be possible without the capabilities and technologies of our organization, as well as our engineers - a highly skilled, accomplished network that spans more than 180 sites, 24 countries and 6 Strategic Business Units (SBUs).
NewSr. Director - Information Security The Brixton Group, Inc.Sr. Director - Information SecurityMcLean, VARemote$80–$100 / hourExperience supporting large federal programs, FedRAMP/cloud security, SIEM, Title 13 data, or large remote workforces is a plus. This role will focus heavily on Authority to Operate (ATO), System Security Plans (SSPs), continuous monitoring, and federal cybersecurity compliance.
Senior Program Analyst ARCTICOM LLCSenior Program AnalystQuantico, VAFacilitate assessments of Cruise Missile Defense Systems (CMDS), Counter -Unmanned Aircraft Systems (C-UAS), Counter-Rocket, Artillery, Mortar (C-RAM), Maneuver Short Range Air Defense (MSHORAD) and Air Defense missile-related-acquisition programs to support organizational planning and development within PM GBAD. Arcticom, LLC provides network and systems administration, enterprise architecture and resource planning, certification and accreditation, software design, programming, maintenance of telecommunications and land mobile radio equipment and systems, help desk support and IT transformation services among other services.
Senior Information Systems Security Officer (Sr. ISSO) - TS/SCI with Poly required EmtakSenior Information Systems Security Officer (Sr. ISSO) - TS/SCI with Poly requiredAnnapolis Junction, MarylandDoD 8570/8140 compliance with IAM Level II or IAT Level III , such as CISSP/Associate, CASP+/SecurityX, or another applicable DoD-approved certification. The ideal candidate will have a strong background in RMF, security documentation, authorization activities, continuous monitoring, and security compliance , along with the ability to work independently with technical teams and government stakeholders.
Sr. Security Engineer CoStar Group IncSr. Security EngineerArlington, VAWe are seeking a Senior Security Engineer with experience in Network, SaaS, and AI Security to help evolve and safeguard CoStar's enterprise security posture across network infrastructure, cloud services, SaaS platforms, and emerging AI systems. Assess security risks associated with AI platforms, copilots, and agent-based systems, including model access controls, prompt/data leakage risks, and tool/plugin abuse.
Senior Security Consultant Kratos DefenseSenior Security ConsultantHerndon, VARemoteAs a Security Consultant for Kratos Commercial Cybersecurity Services division, working in a remote setting,you will be supporting teams of professionals working to evaluate and secure a wide-range of environments within some of the most advanced, leading-edge organizations in the world. Kratos is valued for our ability to design and deliver leading edge, resilient solutions for aerospace communication, control, awareness and mission success across a continuum of offeringsfrom commercial to tailored custom solutions and integrated programs.
Sr Mgr Digital Technology - Physical Security Systems National Railroad Passenger CorpSr Mgr Digital Technology - Physical Security SystemsWashington, DC$149,400–$193,644 / hourThe Sr Manager works on multiple projects as a technical delivery team owner, and sometimes as a project leader while managing matrixed resources, responsible for systems analysis, design development, integration enhancement, maintenance, and support. Our values of 'Do the Right Thing, Excel Together and Put Customers First' are at the heart of what matters most to us, and our Core Capabilities, 'Building Trust, Accountability, Effective Communication, Customer Focus, and Proactive Safety & Security' are what every employee needs to know and do to be most impactful at Amtrak.
Senior Identity Security Engineer (Arlington, VA or San Diego, CA) CoStar Group IncSenior Identity Security Engineer (Arlington, VA or San Diego, CA)Arlington, VA$133,000–$203,000 / yearIdeal candidates will have a thorough understanding of adversary in the middle attacks, social engineering attacks, and offensive privilege escalation techniques, and have experience implementing or operating controls to prevent such attacks. Research, prototype, and operationalize AI-assisted tooling and agentic workflows to improve team efficiency, including automating repetitive analysis and building internal tools that surface identity risk.
NewSenior Director Dev TechnologySenior DirectorReston, VA (Hybrid)$135,000–$200,000 / yearThe Senior Director will establish consistent portfolio governance, monitor performance across programs, strengthen customer relationships, develop leaders, address cross-program risks, and ensure that teams have the resources and organizational support needed to succeed. As a Washington Post Top Workplace award winner for the past THIRTEEN years in a row, the Top Workplaces USA for the past five years, and a recipient of the Companies As Responsive Employers (CARE) Award for the past six years, Dev Technology employees enjoy: .
Senior Intelligence Briefer PeratonSenior Intelligence BrieferFort Belvoir, Virginia$104,000–$166,000 / yearFull timeIn this role, you will serve as a trusted advisor and communicator, delivering high-impact intelligence assessments to senior government officials, flag officers, and Senior Executive Service (SES) personnel. Responsibilities: Peraton is seeking a highly experienced Senior Intelligence Briefer to support the National Reconnaissance Office (NRO) and broader Department of Defense (DoD) intelligence community.
NewSenior AI Value Stream Engineer Macpower Digital Assets Edge Private LimitedSenior AI Value Stream EngineerLinthicum Heights, MD$53.17–$72.60 / hourIntegrate Scaled Agile Framework (SAFe) environments with active Machine Learning pipelines to ensure experimentation phases transition smoothly into production delivery phases. Position Overview: Our client is seeking an experienced Senior AI Value Stream Engineer to act as the primary orchestrator for a public sector artificial intelligence transformation initiative.
Sr Information Systems Security Engineer (ISSE), Advisor TS/SCI w/poly Peraton IncSr Information Systems Security Engineer (ISSE), Advisor TS/SCI w/polyVA$146,000–$234,000 / yearServe as a principal technical advisor on cybersecurity, bringing subject-matter expertise to risk analysis, incident response, system remediation, and audit support efforts. As the world's leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies.
Sr Information Systems Security Engineer (ISSE) SCA, Advisor TS/SCI w/poly Peraton IncSr Information Systems Security Engineer (ISSE) SCA, Advisor TS/SCI w/polyWashington, DC$146,000–$234,000 / yearServe as a principal technical advisor on cybersecurity, bringing subject-matter expertise to risk analysis, incident response, system remediation, and audit support efforts. As the world's leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies.
Senior Software Engineer, Emerging On-prem AI Infrastructure, Security GoogleSenior Software Engineer, Emerging On-prem AI Infrastructure, SecurityReston, VAWe're looking for engineers who bring fresh ideas from all areas, including information retrieval, distributed computing, large-scale system design, networking and data storage, security, artificial intelligence, natural language processing, UI design and mobile; the list goes on and is growing every day. As a software engineer, you will work on a specific project critical to Google’s needs with opportunities to switch teams and projects as you and our fast-paced business grow and evolve.
Senior Security Architect Evolver IncSenior Security ArchitectWashington, DCThe Senior Security Architect will lead the development of secure solutions, provide technical guidance on security design, and collaborate with stakeholders to integrate advanced security controls across complex environments. The Senior Security Architect is responsible for designing, implementing, and maintaining enterprise-level cybersecurity architectures that protect federal systems and data.
Sr Information Security Engineer Exostar LLCSr Information Security EngineerHerndon, VAPart timeThis role is ideal for candidates that have a skillset focused on engineering credibility, architectural judgment, and the ability to operate confidently with technical teams, auditors, customers, and leadership. Exostar’s cloud-based platforms create exclusive communities within the Aerospace and Defense, Life Sciences, and other highly regulated industries where members securely collaborate, share information, and operate compliantly.
Senior Space ISR Staff Officer AvaloreSenior Space ISR Staff OfficerArlington, VirginiaProvide strategic guidance to DoW customer to support interaction with Congress, including assisting in the drafting of testimony, drafting of responses to congressionally directed actions, and drafting appeals to related Congressional budget marks. Manage electronic file management on multiple systems (NIPR, SIPR, JWICs) to ensure proper file management according to NARA rules and regulations for file retention and management.
NewInformation Systems Security Officer (ISSO) 2 Amentum Services IncInformation Systems Security Officer (ISSO) 2Hanover, MD$160,000–$210,000 / yearAs appropriate, each employee is responsible for completing all training requirements and fulfilling all self-aid/buddy aid responsibilities, participating in emergency response tasks and serving on safety committees and teams. Experience in at least two of the following areas is required: knowledge of current security tools, hardware/software security implementation; communication protocols; or encryption tools and techniques.
Senior Information System Security Engineer ManTechSenior Information System Security EngineerWashington, DCHold at least one of the following certifications: Certified Information Systems Security Professional (CISSP) (or Associate), CompTIA Advanced Security Practitioner (CASP) CE, Certified Secure Software Lifecycle Professional (CSSLP), CISSP- Information System Security Engineering Professional (ISSEP), Certified Information Security Manager (CISM), or CISSP- Information System Security Architecture Professional (ISSAP). + Knowledge of federal cybersecurity directives and frameworks, including CISA Emergency Directives (EDs), Binding Operational Directives (BODs), and DOJ Vulnerability Patch Requirements (VPRs).
Information Systems Security Engineer (ISSE) SME/Cloud based, Senior Advisor TS/SCI w/poly Peraton IncInformation Systems Security Engineer (ISSE) SME/Cloud based, Senior Advisor TS/SCI w/polyWashington, DC$176,000–$282,000 / yearBenefits: Peraton offers enhanced benefits to employees supporting this critical National Security program, which include heavily subsidized employee benefits coverage for you and your dependents, 25 days of PTO accrued annually up to a generous PTO cap, and eligibility to participate in an attractive bonus plan. Location: National Capital Region (NCR): In this role, you will: Lead, mentor, and supervise a team of contractor security professionals responsible for the end-to-end implementation of the RMF lifecycle for FBI IT systems.