NewISSO/Systems Security Engineer Bowhead / UIC Technical ServicesISSO/Systems Security EngineerDahlgren, VA$130,000–$150,000 / yearKnowledge of system and application security threats and vulnerabilities (e.g., buffer overflow, mobile code, cross-site scripting, Procedural Language/Structured Query Language [PL/SQL] and injections, race conditions, covert channel, replay, return-oriented attacks, malicious code). The ISSO/Systems Security Engineer will be responsible for identifying and mitigating vulnerabilities in security systems, conducting vulnerability scans, and applying system, network, and operating system hardening techniques.
Lead Security Systems Technician Active Security Consulting LLCLead Security Systems TechnicianDulles, VA$35–$48 / hourActive Security designs, develops, implements, and sustains advanced C5ISR and security solutions to enhance defense and mission capabilities, addressing threats across physical, electronic, cyber, and communications security for commercial and U.S. Government clients. Technical Leadership: Perform complex troubleshooting and diagnostics, including advanced programming and system integration tasks, independently and collaboratively resolving complex issues on-site.
NewInformation Security Analyst StefaniniInformation Security AnalystRichmond, VA$57–$62 / hourTemporaryContractorOur presence is in countries like the Americas, Europe, Africa, and Asia, and more than four hundred clients across a broad spectrum of markets, including financial services, manufacturing, telecommunications, chemical services, technology, public sector, and utilities. The Stefanini Group is a global provider of offshore, onshore and near shore outsourcing, IT digital consulting, systems integration, application, and strategic staffing services to Fortune 1000 enterprises around the world.
NewInformation System Security Officer PlanIT GroupInformation System Security OfficerFalls Church, VAConducts assessments of threats and vulnerabilities, determines deviations from acceptable configurations or enterprise or local policy, assesses the level of risk, and develops and/or recommends appropriate mitigation countermeasures in operational and non-operational situations. Task description and/or any specific requirements: • Ability to manage responsibility for security assessments of a variety of applications or domains, to include cloud computing, and to manage several project/initiatives of large size, complexity, and risk.
NewSenior Specialist, Systems Engineering (Orbital Analyst) L3Harris TechnologiesSenior Specialist, Systems Engineering (Orbital Analyst)Dahlgren, VA$106,500–$197,500 / yearThe Analyst will be a member of a dynamic team supporting cutting edge systems for the space industry and will support satellite space situational awareness (SSA) activities, primarily as an Orbital/Operations Analyst as part of National Security program at Dahlgren, VA. In additional, it requires knowledge of analytical prediction and use of analytical tools, such as Freeflyer, STK, and MATLAB to calculate orbit trajectories, maneuvers, and to establish design reference missions.
NewSpecialist, Systems Engineering (Mission Protection) (TS/SCI w Poly) L3Harris TechnologiesSpecialist, Systems Engineering (Mission Protection) (TS/SCI w Poly)Springfield, VA$92,500–$171,500 / yearWith customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security. The ideal candidate will apply operational security (OPSEC), counterintelligence, cyber defense, and threat principles to protect sensitive capabilities to ensure the survivability of U.S. assets in contested environments.
Cameo Model-Based Systems Engineer (MBSE) Bowhead / UIC Technical ServicesCameo Model-Based Systems Engineer (MBSE)Dahlgren, VACameo Model-Based Systems Engineer (MBSE) (DETO-2026-25748): Bowhead seeks new team members in their support to the Navy High Energy Laser Weapon System (HEL‑LWS) program by refining, updating, and managing a comprehensive Cameo Systems Modeler architectureJoin a mission‑driven team at the forefront of shaping the future of directed energy warfare. This high‑impact team is modernizing the HEL‑LWS architecture using cutting‑edge MBSE practices, Atlassian integration, and digital engineering tools that tie requirements, safety, testing, and modeling into one living ecosystem.
JR Mechanical Engineer / Weapon Systems Modeler Bowhead / UIC Technical ServicesJR Mechanical Engineer / Weapon Systems ModelerDahlgren, VAMechanical Engineer / Weapon Systems Modeler (DETO-2026-25747): Bowhead seeks new team members in their support to the Navy’s Weapons Systems Munitions Integration and Hypersonics division. Combine the Target Vulnerability models and weapon characterizations to assess encounters between a weapon and target with the goal of determining the overall probability of kill (Pk) or system effectiveness based upon delivery accuracy.
Information System Security Officer MANTECHInformation System Security OfficerChantilly, VABachelor’s Degree and at least 5 years of experience in Cybersecurity, Information Technology, Computer Science, or other relevant technical field; Experience can be any combination professional experience, internships, lab work or coursework. Strong Analytical and Critical Thinking Skills, Interpersonal and People Skills, Leadership Skills, Listening Skills, Multi-Tasking Ability, Communication Skills, Organizational Skills, Presentation Skills.
Senior Information System Security Officer MANTECHSenior Information System Security OfficerChantilly, VAHold at least one of the following Information Assurance Management (IAM) Level III certifications: Certified Information Systems Security Professional (CISSP), Global Information Security Professional (GISP), Certified Information System Manager (CISM), or the CompTIA Advanced Security Practitioner (CASP) or equivalent certifications. Monitor security controls for FBI ISs to maintain security Authorized to Operate (ATO); Upload all security control evidence to the Governance, Risk, and Compliance (GRC) application to support security control implementation during the monitoring phase.
NewSpecialist, Systems Engineer - Integrated Protection Strategy Analyst L3Harris TechnologiesSpecialist, Systems Engineer - Integrated Protection Strategy AnalystSpringfield, VA$92,500–$171,500 / yearResponsibilities include monitoring mission systems and operational hazards, supporting conjunction and collision avoidance analysis, assessing threats to mission systems, supporting spectrum protection and interference mitigation activities, contributing to anomaly response, and helping develop procedures, checklists, training materials, and decision-support products. The position also supports the policy and governance aspects of integrated protection efforts by helping translate customer guidance, mission directives, operational policies, and enterprise protection frameworks into executable plans, procedures, concepts, and operational response options.
NewSpecialist, EO/IR Systems Engineer (Top Secret Clearance) L3Harris TechnologiesSpecialist, EO/IR Systems Engineer (Top Secret Clearance)Herndon, VA$92,500–$171,500 / yearWith customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security. The candidate will need to work independently to resolve a wide range of engineering problems, requiring collaboration with all required disciplines (mechanical, optical, electrical, software, etc.).
NewSensor Systems Engineering and Technical Support (SSETS) Landing Page Bowhead / UIC Technical ServicesSensor Systems Engineering and Technical Support (SSETS) Landing PageDahlgren, VASensor Systems Engineering and Technical Support (SSETS) Landing Page (SSETS-2026-24773): Bowhead is seeking to network with individuals to join our team for newly awarded contract effort to provide engineering and technical support services to support NSWCDD at the warfare center, test facilities,Contractor facilities, and in the field. Bachelor’s degree from a school of engineering with at least one curriculum accredited by the Accreditation Board for Engineering and Technology (ABET) as a professional engineering curriculum in one of the following fields: Mechanical Engineering, Electrical Engineering, Computer Engineer, Electronics Engineering.
Systems Engineer (MBSE) Bowhead / UIC Technical ServicesSystems Engineer (MBSE)Dahlgren, VASYSTEMS ENGINEER (MBSE) (E30-2026-24878): Bowhead seeks a DoD SECRET cleared Systems Engineer with Model-Based Systems Engineering experience to join our team supporting the Naval Surface Warfare Center Dahlgren Division (NSWCDD) on the MK 160 Gun Computer System and Naval Fires Control Systems. Bowhead considers factors such as (but not limited to) scope and responsibilities of the position, candidate’s work experience, education/training, key skills, internal peer equity, as well as, market and business considerations when extending an offer.
Model-Based Systems Engineer (MBSE) Bowhead / UIC Technical ServicesModel-Based Systems Engineer (MBSE)Dahlgren, VAModel-Based Systems Engineer (MBSE) (E30-2026-25745): Bowhead seeks a DoD SECRET cleared Model-Based Systems Engineer (MBSE) to join our team supporting the Naval Surface Warfare Center Dahlgren Division. Bowhead considers factors such as (but not limited to) scope and responsibilities of the position, candidate’s work experience, education/training, key skills, internal peer equity, as well as, market and business considerations when extending an offer.
NewGround Systems Engineer II/Senior - Fluids Rocket LabGround Systems Engineer II/Senior - FluidsWattsville, VATo conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR), Rocket Lab Employees must be a U.S. citizen, lawful U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum, or be eligible to obtain the required authorizations from the U.S. Department of State and/or the U.S. Department of Commerce, as applicable. Our Space Systems business designs and builds our extensive line of satellites, payloads, and their components, including spacecraft that have been selected to support NASA missions to the Moon and Mars and components used on the James Webb Space Telescope.
NewNaval System Security Engineer AmentumNaval System Security EngineerDahlgren, VABachelor of Science (BS) degree from an accredited college or university in an engineering, scientific, or technical discipline, or four (4) years of a demonstrated knowledge base and subject matter expertise relevant to specific technical disciplines of the SOW, including the qualifications below; or U.S. Naval operational experience at the E-7 level or higher. Job Description Amentum is seeking a highly motivated and experienced Naval System Security Engineer with a background in Navy surface major weapons, combat, and/or fire control systems to assist our customer with systems, technical, and security engineering methodologies and services.
NewSystems Engineer, Linux and AI VisaSystems Engineer, Linux and AIAshburn, VA$88,000–$136,900 / yearAs an Associate Systems Engineer, you’ll join a global team that plans, implements, and supports secure, resilient endpoints and platforms—partnering closely with vendors and global support groups to deliver nimble, client‑centric solutions. Deploy models as APIs or services, integrate with existing applications, implement and tune orchestration around tools and plugins (MCP‑style connectors, function‑calling schemas, vector DBs), including prompt design, safety/guardrails, and evaluation of agent behavior.
IT Manager, Cyber Security Services Hampton Roads TransitIT Manager, Cyber Security ServicesNorfolk, VA$109,058–$141,775 / yearFull timeThe Manager of Cyber Security Services (CSS) will be hands-on and responsible for management of HRT’s information security and compliance related activities including the following: Utilizing a risk-based approach to manage information security related aspects of HRT’s operations. Providing technical support for computer networks, including firewalls, operating systems and applications, patch management, and data security best practices.
Senior NLCC Communication Systems Engineer Johns Hopkins Applied Physics Laboratory (APL)Senior NLCC Communication Systems EngineerArlington, VA$105,000–$290,000 / yearProvide technical expertise, analysis, and systems engineering support for the NLCC to include the Senior Leadership Command, Control and Communications System (SLC3S) in technical interchange meetings, technical and policy development working groups, and program reviews. 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.