Principal Scientist Galois, Inc.Principal ScientistArlington, VAWith clients including NASA, DARPA, AWS, and the DoW, we leverage our cutting-edge research to deliver high assurance solutions and tools that enhance security, reliability, and operational efficiency across sectors including aerospace & defense, healthcare, semiconductors, and fintech. Who We Are: From building digital engineering tools that make space exploration safer to verifying cryptographic libraries that protect some of the world’s most valuable data, Galois develops technology to guarantee the trustworthiness of systems where failure is unacceptable.
Senior Principal, ML/AI XometrySenior Principal, ML/AINorth Bethesda, MDPlay a leadership role in identifying areas of opportunity — e.g., using ML/AI to unlock new revenue streams (e.g., rapid quoting for new manufacturing modalities, generative design for customers), reduce cost (e.g., automated quality inspection), or optimize efficiency (e.g., 3D-geometry classification, defect detection, generating manufacturing ready models). Stay ahead of industry developments in ML, AI, generative AI, 2D/3D modeling and manufacturing tech; translate insights into the improvement of internal best practices, tooling, frameworks, model governance, data pipelines, and operationalization.
Principal Data Scientist - Gen AI XometryPrincipal Data Scientist - Gen AINorth Bethesda, MD$200,000–$230,000 / yearIn this role, you will serve as a technical leader, owning a 12 month technical roadmap, driving large-scale cross-functional ML and AI initiatives, and setting the long-term scientific direction for AI-driven solutions that enhance Xometry's service offerings. Generative AI Development: Develop and deploy generative AI models and large language models (LLMs) for multimodal document processing, focusing on extracting structured data from technical drawings, purchasing orders, and other complex documents.
Principal Product Manager, Charlotte AI Platform (Hybrid) CrowdStrikePrincipal Product Manager, Charlotte AI Platform (Hybrid)Arlington, VA$175,000–$250,000 / yearDrive Cross-Functional Delivery: Work closely with multiple internal stakeholders-including engineering, data science, and business units-to deeply understand their use cases and translate them into actionable product features. We base all employment decisions--including recruitment, selection, training, compensation, benefits, discipline, promotions, transfers, lay-offs, return from lay-off, terminations and social/recreational programs--on valid job requirements.
Project Management Principal (Architecture) HDR, Inc.Project Management Principal (Architecture)Arlington, VAOur eight Employee Network Groups (Asian Pacific, Black, Hispanic/Latino(a), LGBTQ, People with Disabilities, Veterans, Women, Young Professionals) help create a sense of belonging and foster a supportive environment where everyone is empowered to engage and contribute. Provide expert guidance and leadership to project managers, teams, and cross-functional stakeholders throughout the project lifecycle, including planning, execution, and closure.
Principal Software Engineer XometryPrincipal Software EngineerNorth Bethesda, MDYou will bring deep expertise and technical leadership to help us build fast, reliable, and intuitive solutions that empower our partners – enabling them to more easily manage jobs, streamline operations, and maximize their growth potential within our manufacturing marketplace. Xometry’s digital marketplace gives manufacturers the critical resources they need to grow their business while also making it easy for buyers at Fortune 1000 companies to tap into global manufacturing capacity.
Principal Value Advisor, Value Management Office AtlassianPrincipal Value Advisor, Value Management OfficeWashington DC, Washington, DC$228,000–$297,667 / yearExtensive experience in value management and proven track record of leading complex, cross-functional engagements across a broad range of customer industries. Responsibilities: The Value Management Office exists to infuse all interactions and engagements towards the fulfillment of the customers’ strategic business needs with joint ownership of their long term success .
Principal Product Manager - Threat Detection Engine And Content (Hybrid) CrowdStrikePrincipal Product Manager - Threat Detection Engine And Content (Hybrid)Arlington, VA$160,000–$250,000 / yearAbout the Role: The Product Management team is seeking an experienced Principal Product Manager who is technical, collaborative, and truly excited about building great security products. Collaborate closely with CrowdStrike's Malware Research Center, Data Science, and Engineering teams to understand threat and attack trends and proactively deliver cutting-edge defenses.
Senior Principal Product Manager, Atlassian Government Cloud AtlassianSenior Principal Product Manager, Atlassian Government CloudWashington DC, Washington, DC$228,600–$298,450 / yearAs the Senior Principal Product Manager for Atlassian Government Cloud — Restricted Environments , you will own the product vision, strategy, and delivery of Atlassian’s forthcoming cloud offerings built to support the mission needs of the U.S. Intelligence Community, Department of Defense, and their mission partners. You will also play an important role across the broader Atlassian Government Cloud organization by sharing domain expertise, mentoring other product managers, and helping raise the team’s collective capability in regulated and restricted cloud delivery.
Principal Systems Engineer Power3 SolutionsPrincipal Systems EngineerLaurel, MarylandThe Level 3 System Engineer (SE) shall possess the following capabilities: Manage system requirements and derived requirements to ensure the delivery of production systems that are compatible with the defined system architecture(s) ± Department of Defense Architecture Framework (DoDAF), Service-oriented Architecture (SOA), etc. Establish a process to formally and proactively control and manage changes to requirements, consider impacts prior to commitment to change, gain stakeholder buy-in, eliminate ambiguity, ensure traceability to source requirements, and track and settle open actions.
Principal Architect - Active Top Secret required GD Information TechnologyPrincipal Architect - Active Top Secret requiredWashingtonTo ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave.
Principal FPGA Engineer Rocket Lab USAPrincipal FPGA EngineerChantilly, 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.
Education And Science Principal HDR, Inc.Education And Science PrincipalArlington, VAOur eight Employee Network Groups (Asian Pacific, Black, Hispanic/Latino(a), LGBTQ, People with Disabilities, Veterans, Women, Young Professionals) help create a sense of belonging and foster a supportive environment where everyone is empowered to engage and contribute. At HDR, our employee-owners are fully engaged in creating a welcoming environment where each of us is valued and respected, a place where everyone is empowered to bring their authentic selves and novel ideas to work every day.
Principal .NET Developer Bright Vision TechnologiesPrincipal .NET DeveloperSterling, VARemote$120,000–$170,000 / yearThis role spans the full engineering lifecycle — requirements analysis, architectural design, hands-on implementation, code review, deployment, and post-release support — with particular emphasis on building scalable APIs, responsive front-end applications, and cloud-integrated services. NET Developer Location: 100% Remote (United States) Position Type: Full-time, Direct W2 Salary Range: $120,000–$170,000 Annually Experience: 6+ years Sponsorship: U.S.
Principal Backend Developer Bright Vision TechnologiesPrincipal Backend DeveloperSterling, VARemote$120,000–$170,000 / yearThe ideal candidate combines deep distributed systems expertise with strong platform-engineering instincts, values internal developer experience as a first-class concern, and has a track record of leading multi-quarter platform initiatives that meaningfully raise the engineering bar for the organizations they support. This role focuses on building backend platform capabilities — request routing, traffic management, data fan-out, caching layers, asynchronous job execution, and durable event processing — that must handle very high traffic volumes with predictable latency and minimal operational toil.
Principal, Services Business Development-Co-Brand MasterCardPrincipal, Services Business Development-Co-BrandArlington, VA$221,000–$349,000 / yearAll activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must: Abide by Mastercard's security policies and practices; Ensure the confidentiality and integrity of the information being accessed; Report any suspected information security violation or breach, and. This role is an individual contributor who will directly influence a Services team supporting an assign set of co-brand accounts and partner daily with the Account Management teams, issuer team, and client stakeholders.
Principal Product Manager - Threat Detection Content (Hybrid) CrowdStrikePrincipal Product Manager - Threat Detection Content (Hybrid)Arlington, VA$160,000–$250,000 / yearIn this role, you will bring your in-depth knowledge of the Threat Detection market (including Endpoint, Cloud, and other core pillars) to help guide the evolution of CrowdStrike's visibility, detection, and prevention technologies. About the Role: The Product Management team is seeking an experienced Principal Product Manager who is technical, collaborative, and truly excited about building great security products.
Principal Software Development Engineer MasterCardPrincipal Software Development EngineerArlington, VA$195,000–$323,000 / yearAll activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must: Abide by Mastercard's security policies and practices; Ensure the confidentiality and integrity of the information being accessed; Report any suspected information security violation or breach, and. Proven ability to sell solutions, persuade cross-functional group, garner support for solutions and bring group to a consensus and strong ability in collection and formulation of data, development of Metrics and dashboard reporting.
Principal Transportation Planner ICFPrincipal Transportation PlannerArlington, Virginia$98,614–$167,644 / yearPay Range - There are multiple factors that are considered in determining final pay for a position, including, but not limited to, relevant work experience, skills, certifications and competencies that align to the specified role, geographic location, education and certifications as well as contract provisions regarding labor categories that are specific to the position. We specialize in developing multimodal transportation plans; conducting needs assessments; analyzing transportation system performance data; evaluating the impacts of infrastructure projects, programs, and government policies; developing technical assistance resources; and documenting best practices related to integrated planning, transportation operations, and the environment.
Design Principal Little CareersDesign PrincipalMc Lean, VirginiaPartnering with a transdisciplinary team, you’ll listen intently, ask insightful questions, surface and frame the real challenges, generate and test ideas, and guide teams toward solutions that measurably advance your clients’ strategic and operational goals. A renowned design firm seeking a Design Principal who will continually elevate the quality of our work in the DC (Tysons Corner) office through positive leadership, a collaborative work style, and deep design expertise.