Senior Principal Proposal Excellence Strategist LeidosSenior Principal Proposal Excellence StrategistReston, VA$154,050–$278,475 / yearLeidos' Capture Operations & Excellence, Proposal Operations organization leads and supports more than $50 billion in annual proposal submissions and is seeking an extraordinary Senior Principal Proposal Excellence Strategist to serve as one of our most versatile proposal professionals. The ideal candidate possesses extensive experience supporting traditional Federal, FEDSIM, and commercial procurements, thrives in fast-paced environments, and leverages Gen AI responsibly to improve proposal quality, efficiency, collaboration, and innovation.
Principal / Sr. Principal Software Engineer [TS SCI] Northrop Grumman CorpPrincipal / Sr. Principal Software Engineer [TS SCI]Stafford, VA$114,000–$171,000 / yearJBoss and/or Wildfly are highly desired); relational databases (JDBC, SQL, and MySQL); JEE (Java Enterprise Edition) experience (JDBC, JNI, JNDI, JMS, Servlet/JSP, EJB/JPA); Web service experience (e.g., RESTFul Web services). Knowledge of the following: Hycu backup/recovery software or other backup/recovery software; Nutanix virtual environment, or other platforms such as VMWare; Elastic Search Stack (ELK); Web (Brower based) GUI front end development (HTML, JavaScript, CSS, Angular).
Principal / Sr. Principal Cyber Software Engineer Northrop Grumman CorpPrincipal / Sr. Principal Cyber Software EngineerChantilly, VA$125,300–$187,900 / yearNorthrop Grumman Mission Systems is seeking an experienced Principal / Senior Principal Cyber Software Engineer to join our team supporting a program in the Signals Intelligence Mission Solutions (SMS) Department. The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate''s experience, education, skills and current market conditions.
Principal Cyber Systems Admin / Sr. Principal Cyber Systems Admin Northrop Grumman CorpPrincipal Cyber Systems Admin / Sr. Principal Cyber Systems AdminChantilly, VA$103,600–$155,400 / yearWe strive to attract and retain the best employees by providing an inclusive work environment wherein employees are receptive to diverse ideas, perspectives, and talents to help solve our toughest customer challenges: to develop and maintain some of the most technically sophisticated products, programs, and services in the world. The successful candidate will be expected to monitor, maintain, and provide Tier-2 and Tier-3 support of a mission critical network infrastructure, collect data for analysis, perform network upgrades, and be able to produce documentation and diagrams of the work they perform.
Principal Network Engineer / Senior Principal Network Engineer Northrop Grumman CorpPrincipal Network Engineer / Senior Principal Network EngineerChantilly, VA$103,600–$155,400 / yearWe strive to attract and retain the best employees by providing an inclusive work environment wherein employees are receptive to diverse ideas, perspectives, and talents to help solve our toughest customer challenges: to develop and maintain some of the most technically sophisticated products, programs, and services in the world. The successful candidate will be expected to monitor, maintain, and provide Tier-2 and Tier-3 support of a mission critical network infrastructure, collect data for analysis, perform network upgrades, and be able to produce documentation and diagrams of the work they perform.
NewPrincipal/Sr Principal Infrastructure Engineer Northrop Grumman CorpPrincipal/Sr Principal Infrastructure EngineerVA$125,300–$187,900 / yearYou will work alongside infrastructure, software, DevOps, and cybersecurity engineers to operate reliable platforms, modernize engineering workflows, and ensure our systems remain secure, resilient, and maintainable throughout their lifecycle. Experience administering VMware vSphere environments, including vCenter, ESXi hosts, virtual networking, templates, storage integration, high availability, and platform lifecycle management.
Principal/Sr. Principal Systems Administrator Northrop Grumman CorpPrincipal/Sr. Principal Systems AdministratorFairfax, VA$114,000–$171,000 / yearBasic Qualifications: Principal: Bachelor's degree in information technology, Computer Science, or related field with 5 years of IT experience; Master's degree with 3 years of IT experience; Associate degree with 7 years of IT experience; OR a HS Diploma / GED with 9 years of IT experience is required. Maintain smooth operation of multi-user computer systems, including coordination with network, software, and system engineers, PC desktop technicians, project managers, end users, and customer and IT management.
Principal/Sr Principal Systems Engineer (AHT) Northrop Grumman CorpPrincipal/Sr Principal Systems Engineer (AHT)Fairfax, VA$114,000–$171,000 / yearThe above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate''s experience, education, skills and current market conditions. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation''s history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon.
Principal Planner- Countywide Planning PrInce William County GovernmentPrincipal Planner- Countywide PlanningPrince William County, VA$100,000–$108,000 / yearBy submitting this application, I understand the following: 1) Only the information provided on my application is used to determine my qualifications; 2) My resume will not substitute for the education, work experience, and required fields on the Prince William County application; 3) Only responses to Supplemental Questions that can be verified in my submitted education and work experience will be credited and 4) If selected, my employment dates will be verified for the past three (3) years (if applicable), with a required reference from my current or most recent employer. Extensive experience collaborating among multi-disciplined professionals and stakeholders, contributing to high-level policy discussions, and identifying innovative opportunities; Experience with writing, facilitating, negotiating, explaining, planning terms and processes to customers, and working as a team member.
Principal - Healthcare E4HPrincipal - HealthcareChantilly, VABuild and sustain strong client relationships to drive repeat and new business, including conducting regular executive touchpoints, attending board meetings and events for key districts, and attending industry conferences and events. This role will be pivotal in providing leadership to the Southeast region, driving business growth, serving as a trusted client advisor, and establishing MOREgroup as an industry leader within the market.
Principal--Data, Analytics & AI Architect Fannie MaePrincipal--Data, Analytics & AI ArchitectReston, VirginiaBroad knowledge across application, integration, data, infrastructure, security, and business architecture domains, with the ability to evaluate architectural trade-offs, technical debt, platform maturity, and build-versus-buy decisions. You will partner with business and technology leaders to guide investment decisions, evaluate architectural trade-offs, and ensure platform capabilities deliver measurable business outcomes.
NewPrincipal All Dulles Area Muslim SocietyPrincipalSterling, VirginiaThe principal is responsible for maintaining an oversight of the week-to-week operations of the program, including decision making and financial transactions according to the budget of the program. • Oversee the week-to-week operation of the Program including scheduling of teachers, scheduling classes for the students, budgeting, and financial management of the program.
Principal Network Technician Siltt LLCPrincipal Network TechnicianLeesburg, VARemoteFull timeFrom delivering world-class modular data center facilities to all-hours, 365-day operational response and disaster recovery, our multi-functional team of experts are force multipliers across the infrastructure landscape. You serve as a "Lead Trainer" and working Subject Matter Expert, deploying to global facilities to oversee rack-and-stack services, perform advanced fiber characterization, and mentor local site technicians.
Principal Windows Systems Administrator - Polygraph Northrop Grumman CorpPrincipal Windows Systems Administrator - PolygraphVA$103,600–$155,400 / yearPreferred Qualifications: The ideal candidate will have a Bachelor''s degree in Information Technology, a Security+ CE, MCSE (or similar Microsoft cert), and 6 years of Windows Server, VMWare, Active Directory, Microsoft Exchange, and Group Policy administration experience within classified environments. Candidates must meet the U.S. Government 8140 baseline certification requirements (8570 equivalent) for a Principal Computer Systems Analyst - IAT Level II (examples: Security+ CE, CCNA-Security, CND, CySA+, RHCSA).
NewPrincipal Classified Cybersecurity Analyst - TS/SCI Northrop Grumman CorpPrincipal Classified Cybersecurity Analyst - TS/SCIVA$114,000–$171,000 / yearCandidates must meet the U.S. Government 8140 requirements (8570 equivalent) for a Principal Classified Cybersecurity Analyst - IAM level I certification or higher (Examples: Security+, CND, Cloud+, CAP or CGRC, CASP+ or CompTIA Security X, GSLC, CISSP-Associate, CISM, CISSP, GSLC, CCISO). Basic Qualifications: Master''s degree with 3 years of relevant technical experience; OR a Bachelor''s degree with 5 years of relevant technical experience; OR an Associate''s degree with 7 years of relevant technical experience; OR a High School Diploma/GED with 9 years of relevant technical experience is required.
Unified Communications Engineer - Principal Amentum Services IncUnified Communications Engineer - PrincipalVAKnowledge in Cisco Unified Communications Manager, Cisco IM & Presence, Cisco Expressway, Cisco Video Teleconferencing Systems, and Cisco Session Border Controller, Cisco Meeting Server, Cisco Contact Center Express, VQ Conference Manager, Cisco Unity Connect, MS SQL Databases, Integrated Room Video Teleconferencing Control Systems, ELK Stack, and NetScout. At least 12 years of telecommunications technical experience installing, administering, and upgrading Cisco Unified Collaboration appliances and troubleshooting converged networks that leverage Cisco UC capabilities to interconnect Cisco, Tandberg, and Polycom endpoints, gateways, and teleconference bridge products.
Principal AI Engineer (Agentic AI) Navy Federal Credit UnionPrincipal AI Engineer (Agentic AI)Vienna, VAThe Principal AI Engineer is a senior, hands-on technical leader responsible for end-to-end delivery of production-grade AI capabilities that span architecture, implementation, deployment, and operational readiness while translating complex technical work into clear, executive-ready narratives. Demonstrated experience conducting threat modeling and implementing security controls for AI systems, including prompt-injection defenses, data-loss prevention, agent authorization, secure tool execution, secrets management, and adversarial testing.
Principal Systems Test Engineer - Flight Controls Electra Aero IncPrincipal Systems Test Engineer - Flight ControlsManassas, VAOur Ultra Short technology unlocks thousands of new operating locations and enables what we call Direct Aviation: quiet, point-to-point regional travel that gets people from where they are to where they want to go, without the congestion of major airports or the noise of conventional aviation. This is a hands-on leadership role - you'll mentor junior engineers, own the architecture of our simulation labs, and build the data management and automated test processes that engineering depends on to move the EL9 toward certification.
Principal Aortic Account Manager Endologix LLCPrincipal Aortic Account ManagerVATerritory Management & Strategic Sales Execution: Develop, manage, and grow trusted relationships with vascular specialists, hospital systems, and key stakeholders by acting transparently, delivering value, and aligning solutions to clinical and economic needs. Strategic & Analytical Capability: Leverages data and business insights to clearly communicate quarterly strategic business plans, territory market share, procedures per physician, and trained physician segments-driving informed decisions that improve outcomes and performance.
Principal Product Manager, Model Training & Fine-Tuning Seekr Technologies IncPrincipal Product Manager, Model Training & Fine-TuningReston, VATrusted by leading enterprises and government agencies, we partner with defense, finance, telecom, and critical infrastructure leaders to enable AI solutions that drive real-world results with unmatched transparency and control. Available across cloud, on-premises, and edge environments, SeekrFlow reduces bias, strengthens data integrity, and simplifies model oversight so organizations can rely on trusted AI decisions in high-stakes settings that impact society's most sensitive and vital systems.