NewSenior RF and Antennas System Engineer CACI International IncSenior RF and Antennas System EngineerFairfax, VA$98,500–$206,800 / yearThis role focuses on phased array antennas, reflector antenna systems, beamforming architectures, and RF subsystem integration across the full engineering lifecycle-from concept development and requirements definition through prototype development, test, and transition to fielded systems. Pay 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.
NewRF and Antennas Systems Engineer CACI International IncRF and Antennas Systems EngineerSterling, VA$94,400–$198,200 / yearThis role focuses on phased array antennas, reflector antenna systems, beamforming architectures, and RF subsystem integration across the engineering lifecycle-from concept development and requirements definition through prototype development, test, and transition to fielded systems. Pay 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.
Engineering Assistant ABM IndustriesEngineering AssistantWashington, DCThe Engineering Assistant will work directly with the Assistant Director of Building Engineering and will support the day-to-day operations of building systems and maintenance. The Engineering Assistant will also assist with routine testing, installations, repairs, collaborate with contractors, and assist with other facilities duties as needed.
Sr. Communications Engineer Systems Planning and AnalysisSr. Communications EngineerWashington, DC, Washington, DC$135,000–$175,000 / yearFull timeLeverage specialized tools including Cambium LINKPlanner for point-to-point and point-to-multipoint microwave/wireless link design, path profiling, performance prediction, and “what-if” scenario modeling; and Spectrum Center’s Spectrum-E for spectrum management, e-licensing support, technical analysis (coverage plots, best server analysis, interference studies), and coordination workflows. Engage with internal stakeholders (e.g., DHS components like CBP, TSA, and NTIA/FCC spectrum offices) and external partners (e.g., contractors, interagency groups, commercial carriers) to resolve technical challenges, ensure system interoperability, coordinate spectrum access, and support frequency allocation requests for mission-critical border operations.
Cyber Security Engineer II Redhorse CorporationCyber Security Engineer IIWoodbridge, VAEducational Requirement: Bachelor’s degree in Computer Science, Computer Engineering, Software Engineering, Electrical Engineering, Computer Security, or Network Engineering. We’re looking for thoughtful, skilled professionals who thrive as trusted partners building technology-agnostic solutions and want to apply their talents supporting customers with difficult and important mission sets.
Senior CNO Software Engineer Redhorse CorporationSenior CNO Software EngineerQuantico, VAWe’re looking for thoughtful, skilled professionals who thrive as trusted partners building technology-agnostic solutions and want to apply their talents supporting customers with difficult and important mission sets. In this role, you will be at the forefront of advanced Computer Network Operations (CNO), designing and sustaining mission-critical software that directly impacts national security.
Exercise Execution Systems Engineer LV8D Solutions LLCExercise Execution Systems EngineerChantilly, VirginiaLV8D Solutions is an elite Systems Engineering and Technical Advisory (SETA) company that delivers advanced systems engineering, integration, acquisition, mission operations, network communications, and cybersecurity support to our defense and intelligence customers. LV8D Solutions is seeking an Exercise Execution Systems Engineer to lead the development of exercise concepts, test objectives, execution plans, and performance assessments while collaborating across the Department of War (DoW), Intelligence Community (IC), and international partner organizations.
Ground Systems Engineer Systems Planning and AnalysisGround Systems EngineerChantilly, Virginia$150,000–$195,000 / yearFull timeSPA provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work. SPA provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide both paid and unpaid time away from work.
Senior ICS/SCADA & Industrial Controls Engineer LeidosSenior ICS/SCADA & Industrial Controls EngineerReston, Virginia$131,300–$237,350 / yearBachelor's degree in a STEM field (Electrical Engineering, Mechanical Engineering, or related discipline) with relevant professional certifications and 12+ years of experience, or a Master's degree with 10+ years of relevant experience. This role focuses on understanding commercial and heavy industrial facilities, as well as the interoperability of systems managed through Industrial Control Systems (ICS) and Building Management Systems (BMS).
Senior Software Engineer (SEG3) Decision TechnologiesSenior Software Engineer (SEG3)WashingtonCompensation at Decision Technologies, Inc. is determined by various factors, including but not limited to location, the individual’s particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. Travel should be infrequent but include occasional trips to support government efforts at East and West Coast naval centric areas like Norfolk, VA and San Diego, CA.
Mid-Level Software Engineer Decision TechnologiesMid-Level Software EngineerWashingtonCompensation at Decision Technologies, Inc. is determined by various factors, including but not limited to location, the individual’s particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. Travel should be infrequent but include occasion trips to support government efforts at East and West Coast naval centric areas like Norfolk, VA and San Diego, CA.
Junior Software Engineer (SEG1) Decision TechnologiesJunior Software Engineer (SEG1)WashingtonCompensation at Decision Technologies, Inc. is determined by various factors, including but not limited to location, the individual’s particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. Travel should be infrequent but include occasional trips to support government efforts at East and West Coast naval centric areas like Norfolk, VA and San Diego, CA.
Software Engineer - TS/SCI Required - R135 Expedition TechnologySoftware Engineer - TS/SCI Required - R135Herndon, VirginiaAt Expedition Technology (EXP), we’re looking for a Software Engineer with a DevOps mindset to help us design and implement services that support verification, validation, testing, and evaluation workflows for the DoD and Intel communities. DevOps experience is a bonus, especially if you’ve worked with containerized deployments and CI/CD pipelines, but your primary focus will be building the services that run in our mission environments.
ICS/SCADA & Critical Infrastructure Engineer - TS/SCI Poly LeidosICS/SCADA & Critical Infrastructure Engineer - TS/SCI PolyReston, VirginiaThis role focuses on understanding commercial and heavy industrial facilities, as well as the interoperability of systems managed through Industrial Control Systems (ICS) and Building Management Systems (BMS). August 13, 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.
CBRN Systems Engineer Chenega Security International, LLCCBRN Systems EngineerArlington, VirginiaOverview: The CBRN Systems Engineer provides technical expertise and operational support for Chemical, Biological, Radiological, and Nuclear (CBRN) and/or Counter-Unmanned Aircraft Systems (C-UAS) detection technologies. The ideal candidate brings deep experience with advanced sensor technologies, strong analytical skills, and the ability to collaborate effectively across government and industry teams.
Lead Hardware Engineer - Onsite position Curtiss-WrightLead Hardware Engineer - Onsite positionAshburn, VirginiaThis role involves leading the design and development of complex electrical boards , including single board computers (SBC), FPGA, switch, and input/output cards in 3U and 6U VPX form factors, as well as custom form-factor systems incorporating software, firmware, and hardware security elements. The ideal candidate brings extensive expertise in electronic components, integrated circuitry, mechanical systems, and DSP systems, with a proven ability to provide technical leadership and deliver complex hardware solutions through design, testing, qualification, and production phases.
NewPrincipal Systems Engineer (API Gateway) - TS/SCI w CI Poly Modern Government SolutionsPrincipal Systems Engineer (API Gateway) - TS/SCI w CI PolySterling, VAFull timeBachelor's degree in Systems Engineering, Computer Science, Computer Engineering, Software Engineering, Information Technology, Electrical Engineering, Mathematics, Physics, or a related field.16+ years of experience designing, integrating, and supporting enterprise systems, cloud architectures, and API-driven solutions within complex mission environments.5+ years of experience implementing and administering API gateway technologies in cloud-based architectures; Experience designing secure APIs and enterprise integration solutions utilizing REST, GraphQL, event-driven architectures, message queues, streaming platforms, or ETL pipelines. TITLE: Principal Systems Engineer (API Gateway)LOCATION: Sterling, VA (Relocation assistance considered)CLEARANCE REQUIRED: Active TS/SCI with CI PolyEMPLOYMENT TYPE: Full-time, Onsite POSITION SUMMARYModern Government Solutions (MGS) is seeking a Principal Systems Engineer to architect, integrate, and secure mission-critical API ecosystems supporting next-generation national security capabilities.
NewMicroelectronics Engineer Booz Allen Hamilton Inc.Microelectronics EngineerQuantico, VA$69,300–$158,000 / yearOnsite: 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. Bachelor's degree and 3+ years of experience in hardware engineering, Master's degree and 1+ years of experience in hardware engineering, OR 10+ years of experience in hardware engineering in lieu of a degree.
Principal Systems Engineer-Defense Curtiss-WrightPrincipal Systems Engineer-DefenseAshburn, VirginiaAs a leading Modular Open Systems Approach (MOSA) solutions supplier for battlefield platforms and communication systems , we are uniquely positioned to benefit from the DoD's commitment to maintaining technological superiority on the battlefield. Curtiss-Wright's Defense Solution division is a trusted, proven leader, delivering superior products and services that meet the defense and aerospace industries' toughest challenges with best-in-class value.
Principal Systems Engineer - Defense Curtiss-WrightPrincipal Systems Engineer - DefenseAshburn, VirginiaAs a leading Modular Open Systems Approach (MOSA) solutions supplier for battlefield platforms and communication systems , we are uniquely positioned to benefit from the DoD's commitment to maintaining technological superiority on the battlefield. Curtiss-Wright's Defense Solution division is a trusted, proven leader, delivering superior products and services that meet the defense and aerospace industries' toughest challenges with best-in-class value.