Principal Product Engineer BytoaPrincipal Product EngineerColumbia, MarylandYou'll be expected to have strong opinions loosely held, challenge the status quo relentlessly, and help us build products that create meaningful impact in the cybersecurity AI space. Participate actively in leadership team discussions, bringing technical depth and product intuition to debates about direction, project prioritization, and strategic decisions.
Sr Principal Architect - Architecture Practice - Remote National Railroad Passenger CorpSr Principal Architect - Architecture Practice - RemoteWashington, DCRemote$149,400–$193,644 / hourOur 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. Strong expertise in architectural practices: Architectural Decision Records, Build vs Buy analysis, Business Capability Maps, Value-Stream Analysis, Solution Architecture work products, Architecture Governance.
Capture Manager, Principal- Defense And Intel ASRC Federal Holding CompanyCapture Manager, Principal- Defense And IntelReston, VADemonstrated experience leading a cross-matrix team comprised of business development, proposals, pricing, estimating, and other shared services (i.e., Human Resources).High-level presentation skills with ability to communicate complex strategies to both executive leadership and clients. This role involves managing all aspects of the capture process including working closely with business development, proposal operations, technical subject matter experts, estimating, price to win, and pricing teams to create cohesive and competitive capture strategies.
Principal Software Engineer – Cyber Analytics G2 Ops, Inc.Principal Software Engineer – Cyber AnalyticsArlington, VA$145,000–$170,000 / yearThis role provides hands-on technical leadership across the program's software application portfolio, with primary responsibility for leading the development and continued evolution of the SOFIA Cyber Analytics Platform , as well as technical oversight of MONARCH, SMART, and related cybersecurity and digital engineering applications . The Software Engineering Capability Lead works closely with cybersecurity engineers, systems engineers, program leadership, and customer stakeholders to translate mission and technical requirements into executable software solutions supporting Department of Defense customers.
Principal Proposal Subcontract Manager CACI International Inc.Principal Proposal Subcontract ManagerReston, VA$84,900–$178,400 / yearPay 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. The Principal Proposal Subcontract Administrator is responsible for providing pre-award proposal support to large proposal efforts often with large teams of subcontractors.
Principal Product Manager – SAR Data Products Iceye UsPrincipal Product Manager – SAR Data ProductsHerndon, VirginiaThrough that collaboration, this role is responsible for establishing and delivering world class SAR constellation access and SAR data products through an intuitive system that ensures customers can easily interact with the constellation and integrate our data and capabilities into existing workflows and analytics platforms. Some travel may be necessary – the ability to travel by car, plane, train, bus, vessel, or metro, operate a motor vehicle and maintain a valid Driver’s License and/or effectively navigate public transportation is required.
Principal Control Systems Engineer, PAT Systems Blue OriginPrincipal Control Systems Engineer, PAT SystemsWashingtonand/or transports placardable amounts of hazardous materials by ground in any vehicle on a public road while in commerce, may be subject to additional Federal Motor Carrier Safety Regulations including: Driver Qualification Files, Medical Certification (obtained before onboarding), Road Test, Hours of Service, Drug and Alcohol Testing, vehicle inspection requirements, CDL requirements (if applicable) and hazardous materials transportation/shipping training. Required for Certain Job Profiles: Drivers who operate Commercial Motor Vehicles with a Gross Vehicle Weight (GVW), Gross Vehicle Weight Rating (GVWR) or combination of power unit and trailer that meets or exceeds 10,001 lbs.
Principal Technical Program Manager, Data Centers OraclePrincipal Technical Program Manager, Data CentersVA, VAThe successful candidate will coordinate internal teams, colocation providers, utilities, contractors, and technology partners across site due diligence, design, construction, commissioning, white-space fit-out, network deployment, server readiness, and operational handover. We are seeking an experienced End-to-End Data Center Technical Program Manager to lead hyperscale data center capacity-delivery programs from early site selection through customer handover and production go-live.
Sr. Principal Threat Intelligence Engineer- Remote or Hybrid in MN or DC UnitedHealth Group IncSr. Principal Threat Intelligence Engineer- Remote or Hybrid in MN or DCWashington, DCRemote$134,600–$230,800 / yearThe Senior Principal Threat Intelligence Engineer is expected to conceptualize, guide, and execute the delivery of technical intelligence solutions to CTI, SOC, Threat Detection, and Threat Hunting teams that accelerate the processing and dissemination of intelligence, increase speed of detection, and enable rapid response. The role focuses on ingesting, normalizing, and enriching threat intelligence information, integrating Threat Intelligence Platforms (TIPs) and intelligence sources with security tooling (e.g., SIEM, SOAR, EDR), and deploying automated intelligence-enabled detection and response workflows.
Principal Data Architect ASRC Federal Holding CompanyPrincipal Data ArchitectWashington, DCThe Data Architect will serve as the lead authority for designing, implementing, and maintaining enterprise data architecture under the ICE Law Enforcement Systems and Analysis (LESA) Data Quality Improvement Support Services contract, ensuring that data structures, models, and governance frameworks strengthen the accuracy, accessibility, and operational usability of mission‑critical systems such as the Enforcement Integrated Database (EID), the EAGLE application, and the Alien Removal Module (EARM). Demonstrated experience in applying advanced statistical techniques, machine learning, and AI to real-world datasets; proficient with modern data analytics toolsets (SQL, Python, R, Databricks, etc.); strong communication skills, with the ability to explain technical concepts clearly.
Principal Account Manager - Navy and Marine Corps Aviation Honeywell AerospacePrincipal Account Manager - Navy and Marine Corps AviationWashington, DCWe are currently seeking a dynamic and experienced Principal Account Manager to lead strategic customer engagements in the Naval Aviation sector, specifically supporting U.S. Navy, Marine Corps, Coast Guard, and OEM clients. Honeywell Aerospace products and services are found on aircraft across commercial aviation, defense and space - from engines and cockpit electronics to cabin systems, mechanical components and connectivity solutions.
Principal Engineer – TeraWave RF and Optical Systems Blue OriginPrincipal Engineer – TeraWave RF and Optical SystemsWashingtonand/or transports placardable amounts of hazardous materials by ground in any vehicle on a public road while in commerce, may be subject to additional Federal Motor Carrier Safety Regulations including: Driver Qualification Files, Medical Certification (obtained before onboarding), Road Test, Hours of Service, Drug and Alcohol Testing, vehicle inspection requirements, CDL requirements (if applicable) and hazardous materials transportation/shipping training. Direct the architecture of high-fidelity HITL frameworks that replicate orbital dynamics — delay/Doppler profiles, azimuth/elevation tracking, handovers, and real-time kinematics — using CATR/anechoic ranges, channel emulators, GNSS simulators, hexapods/positioners, and precision RF and optical reference instrumentation.
Principal Space Vehicle System Design Lead Blue Origin Enterprises LPPrincipal Space Vehicle System Design LeadReston, VA$169,624–$237,473.25 / yearYour effectiveness stems from four integrated competency areas: (1) Technical Expertise - deep domain knowledge in space vehicle systems engineering, electronics, embedded software, controls algorithms, sensors, actuators, power systems, and data networks, combined with systems-level thinking that anticipates downstream impacts of design decisions; (2) Technical Leadership - sound judgment that balances innovation with reliability, fluency in design reviews, failure analysis acumen, and confident decision-making under uncertainty; (3) People & Team Dynamics - mentorship mindset, cross-functional influence, composure under pressure, and a collaborative style that fosters innovation and resilience; and (4) Strategic Vision & Organizational Impact - tying technical decisions to mission success and business goals, identifying organizational gaps before they escalate, and communicating a compelling technical vision across all levels. As a Principal Systems Engineer on a hardworking team of talented specialists, technicians, and engineers, you will function as the Space Vehicle System Design Lead for a unique customer mission within the Blue Ring Systems Engineering, Integration & Test organization, working closely with other system, software, hardware and integration & test engineers to develop the optimal space vehicle system solution for unique Blue Ring Spacecraft missions and customer needs.
Principal AI & Machine Learning Engineer - U.S. Based Hybrid Opportunity Common AppPrincipal AI & Machine Learning Engineer - U.S. Based Hybrid OpportunityArlington, VA$144,160–$162,180 / yearThe Principal Artificial Intelligence (AI) & Machine Learning (ML) Engineer is the technical leader responsible for embedding artificial intelligence into enterprise workflows and analytic processes to drive measurable gains in productivity, insight generation, and decision support within the Data Analytics & Research (DAR) division. Reporting to the Senior Director, Analytics Engineering, the Principal AI/ML Engineer partners closely with Data Engineering, Data Governance, and cross-functional business stakeholders to ensure that AI solutions are scalable, secure, compliant, and aligned with enterprise data strategy.
Principal Quality Engineer Thales Defense & SecurityPrincipal Quality EngineerGermantown, MD$121,230–$154,905 / yearWith over 1,000 employees, TDSI and its four subsidiaries (Advanced Acoustic Concepts, Digital Receiver Technology, Tampa Microwave, and Trusted Cyber Technologies), supports U.S. Joint Services, special operations forces and multi-national partners with a variety of communication, visualization, signal intelligence/electronic warfare, and sensor/sonar capabilities. Supports Program Quality Assurance activities for production programs to include First Article Inspections (FAI), Material Review Board (MRB), Change Control Board (CCB), Failure Review Board (FRB), and Work Product review and approval.
Principal Software Engineer- Hybrid Envision Innovative SolutionsPrincipal Software Engineer- HybridColumbia, MDBuilds and deploys multiple applications across diverse tech stacks, including containerized React UIs, Java and Go microservices, custom REST security services, and data stores such as MongoDB and an OpenSearch cluster. Since 2008, we have supported critical national security programs by building high-performing engineering teams and developing innovative enterprise solutions.
NewPrincipal Scientist, Flow Cytometry Precision for MedicinePrincipal Scientist, Flow CytometryFrederick, MDKey components will be focused on, design and development of innovative qualified and validated immunophenotyping (including high content flow cytometry assays up to 31 markers, receptor occupancy assays, tetramer/dextramer assays as well as immunophenotyping flow based assays), and antigen specific (ELISpot/Fluorospot) or other custom cell based assays. Act as internal expert on technical advances and industry trends to anticipate and act as a thought leader to management on all matters of major importance, initiate and/or recommend appropriate courses of action and identify those matters requiring policy interpretation or revision.
Senior Principal Mission Engineer (Scenarios) Trusted Space, LLCSenior Principal Mission Engineer (Scenarios)Chantilly, VA$170,000–$200,000 / yearMaster’s Degree in Math, Science or Engineering with 15+ Years of demonstrated system engineering and integration experience with space, ground, operations and sustainment segments of DoW or NRO programs with a proven delivery record, or a bachelor’s degree in Math, Science or Engineering with 17+ years of demonstrated experience. Trusted Space is the premier provider of trusted autonomy and battlespace management software solutions enabling machine speed sensing, sense making, decision making, and acting for critical space and intelligence missions.
Senior Principal Mission Engineer (ERD) Trusted Space, LLCSenior Principal Mission Engineer (ERD)Chantilly, VA$170,000–$200,000 / yearMaster’s Degree in Math, Science or Engineering with 15+ Years of demonstrated system engineering and integration experience with space, ground, operations and sustainment segments of DoD or NRO programs with a proven delivery record, or a bachelor’s degree in Math, Science or Engineering with 17+ Years of demonstrated experience. Candidate will assess integrated component program designs (Space Vehicles and Ground Systems) and develop verification and validation approaches against the Enterprise Requirements Document (ERD).Develop a Requirements Verification Trace Matrix (RVTM) for the Enterprise Requirements Document (ERD).
NewPrincipal Motor Control Avionics Engineer – Lunar Permanence Blue OriginPrincipal Motor Control Avionics Engineer – Lunar PermanenceWashingtonand/or transports placardable amounts of hazardous materials by ground in any vehicle on a public road while in commerce, may be subject to additional Federal Motor Carrier Safety Regulations including: Driver Qualification Files, Medical Certification (obtained before onboarding), Road Test, Hours of Service, Drug and Alcohol Testing, vehicle inspection requirements, CDL requirements (if applicable) and hazardous materials transportation/shipping training. Required for Certain Job Profiles: Drivers who operate Commercial Motor Vehicles with a Gross Vehicle Weight (GVW), Gross Vehicle Weight Rating (GVWR) or combination of power unit and trailer that meets or exceeds 10,001 lbs.