• Lead/ Principal Nuclear Engineer

    MPR Associates (Alexandria, VA)
    Overview MPR Associates, Inc. (MPR), a thriving multi-discipline, specialty engineering services and consulting firm, is actively seeking capable and motivated Lead/ ... Principal Nuclear Engineers to join our team. If you...base in the fields of power and energy, federal services , and health and life sciences. We work throughout… more
    MPR Associates (06/27/25)
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  • Principal Software Engineer

    ManTech (Reston, VA)
    …position. The ** Principal Software Engineer** will work with Network and Systems Engineers to design, build, monitor, maintain, and upgrade all program networks ... ManTech seeks a motivated, career and customer-oriented ** Principal Software Engineer** to join our team in...limited to:** + Designing, developing, programming, and modifying software, systems , applications, and tools, both existing and new in… more
    ManTech (06/11/25)
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  • Principal Software Engineering Manager…

    Microsoft Corporation (Reston, VA)
    …our production services , and work closely with other engineering teams to ensure services and systems are highly stable, meet performance SLAs, and meet the ... that few companies in the industry are required to support . Leveraging state-of-the-art technologies, you will be instrumental in...closely with other engineering and research teams to ensure services & systems are highly stable and… more
    Microsoft Corporation (07/31/25)
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  • Principal Azure Solution Architect, Cloud…

    Amazon (Arlington, VA)
    …to continuously improve AWS' overall value proposition. In addition to on-demand self- service resources, the CI team provides targeted support for specific ... customer business problems and accelerate the adoption of AWS services . You will understand cloud economics to drive the...insights to train the AWS field and enhance our service offerings. Ideal candidates bring deep, hands-on expertise with… more
    Amazon (07/15/25)
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  • Principal Specialist, Environmental Health…

    RTX Corporation (Sterling, VA)
    …Primary onsite support shall be based at the Sterling, VA Mission Systems location with secondary support provided for the locations in STS (Simulation ... eligible for a security clearance **Security Clearance:** DoD Clearance: Secret Principal Specialist, EH&S Generalist overseeing Environmental, Health, and Safety at… more
    RTX Corporation (08/01/25)
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  • Sr. Principal Applied Scientist, Sponsored…

    Amazon (Arlington, VA)
    Description The Sponsored Products & Brands team is looking for a Sr. Principal Scientist to help our millions of shoppers intuitively navigate our vast inventory by ... product and technical innovations every day! As a Senior Principal Scientist in Sponsored Products, you will have deep...engineers. Finally, you will work with academic partners to support our in-house talent with direct access to cutting… more
    Amazon (06/17/25)
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  • Principal Engineer (PE) Electronics

    Amentum (Springfield, VA)
    **This position is contingent upon contract award** Amentum is seeking a ** Principal Engineer (PE) Electronics** to support an upcoming INSCOM G-4 Global ... Intelligence Logistics and Engineering (GILE) Support contract. These services will ...microwave (MW) radio frequency (RF) receiving, transmitting, and distribution systems . + Work on electronic equipment including but not… more
    Amentum (06/27/25)
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  • Principal Product Manager Tech, Tech…

    Amazon (Arlington, VA)
    …aspects related to IT Asset Management and Business Operations. We are seeking a Principal Product Manager, Asset Management to be a product lead for the corporate ... asset management systems . You will conceptualize and lead new, large product...full Product lifecycle management from conception to delivery and support . You will define a data-driven product vision, develop… more
    Amazon (05/23/25)
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  • Principal Java Developer

    Leidos (Reston, VA)
    **Description** **Leidos** has a new and exciting opportunity for a ** Principal ** **Java Developer** in our **National Security Sector's (NSS) Cyber & Analytics ... Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support , Parental Paid Leave, and much more. **Join us and make a… more
    Leidos (08/01/25)
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  • Principal Cyber Security Engineer

    ManTech (Chantilly, VA)
    …deployment support to migrate, deploy, enhance, and maintain C2C services + Managing and maintaining C2C appliances, applications, servers, and supporting ... MANTECH seeks a motivated and customer-focused ** Principal Cyber Security Engineer** to join our team in **Chantilly, VA** . In this role, you will help design,… more
    ManTech (07/31/25)
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