4,677 Results for

Senior Science Jobs in Herndon, VA

Leidos logo
New

Springfield, VA
  • $92,300–$166,850

June 16, 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

Bryantown, MD
  • $159,000–$191,000

li>Degree from a 4-year program or equivalent in engineering, engineering technology, or physical sciences, or professional engineer license, and more than 1.5 years as a qualified non-licensed operator or Staff member, Supervisor or Manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility.

  • 1.5 years or more in a position equivalent to Reactor Operator (or Supervisor) at a military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).

  • Leidos logo
    New

    Bethesda, MD
    • $131,300–$237,350

    June 24, 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

    Leidos logo

    Arlington, VA
    • $107,900–$195,050

    May 21, 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

    Leidos logo
    New

    Fulton, MD
    • $107,900–$195,050

    February 4, 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

    Leidos logo
    New

    Washington, DC
    • $107,900–$195,050

    June 3, 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

    Leidos logo
    New

    Washington, DC
    • $180,000–$190,000

    June 24, 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

    Washington, DC

    The disclosed range takes into account the wide range of factors that are considered in making compensation decisions including, but not limited to, geographic location, relevant education, qualifications, certifications, experience, skills, seniority, performance, sales or revenue-based metrics, and business or organizational needs. It delivers end-to-end services and solutions leveraging strengths from strategy and design to engineering, all fueled by its market leading capabilities in AI, generative AI, cloud and data, combined with its deep industry expertise and partner ecosystem.

    Washington, DC
    • Full time

    The Senior ETL Developer is expected to understand data modeling, source-to-target mapping, transformation logic, data quality controls, and the operational impacts of upstream and downstream changes. Develop, enhance, test, and maintain ETL pipelines, data integration workflows, and transformation logic supporting reporting, analytics, and operational processes.•

    Leidos logo
    New

    Burke, VA
    • $131,300–$237,350

    March 2, 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

    Washington, DC
    • Full time

    An Engineer 3 has strong technical skills and background, a knack for learning new technologies, and a blend of good problem-solving and innovation needed to resolve a wide variety of technical production challenges. Develop Power Automate workflows to orchestrate report delivery, data refresh notifications, approval processes, and operational alerts across EDW reporting environments.

    Leidos logo
    New

    Springfield, VA
    • $92,300–$166,850

    April 17, 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

    System One logo

    Washington, DC
    • $50.88–$50.88 / hour

    ul>

  • Lead enterprise anti-virus operations supporting SEC workstations and servers across the agency environment, including centralized policy administration, secure deployment, configuration, signature/DAT and engine updates, and scheduled scanning.
  • Serve as escalation point for complex malware and endpoint security incidents, driving rapid restoration and durable corrective actions.

  • System One logo
    New

    Columbia, MD

    li>Identify and solve complex business problems using advanced numerical techniques, algorithms, and models in statistical modeling, machine learning, operations research, and data mining.

  • Communicate analytical findings effectively to product teams, leadership, and customers, while educating about artificial intelligence, machine learning, and statistical models.

  • Beacon Hill Staffing Group, LLC logo
    New

    Arlington, Virginia
    • $80,000–$100,000 / year
    • Full time

    Learn more about Beacon Hill and our specialty divisions, Beacon Hill Associates, Beacon Hill Financial, Beacon Hill HR, Beacon Hill Legal, Beacon Hill Life Sciences and Beacon Hill Technologies by visiting www.bhsg.com.

    Senior Accountant - Arlington, VA.

    Columbia, MD
    • Full time

    You will tackle a diverse set of challenges, from developing robust API endpoints and modifying complex open-source systems like Trino, to architecting intricate identity federation solutions, managing large-scale data ingest, and streamlining our deployment automation. Enlighten, honored as a Top Workplace from USA Today, is a leader in big data solution development and deployment, with expertise in cloud-based services, software and systems engineering, cyber capabilities, and data science.

    Arlington, VA
    • $177,815–$185,000
    • Full time

    HII's Mission Technologies is seeking a Senior RF Spectrum Policy Engineer to provide direct support to our Government customer, the Department of the Navy Chief Information Office in the area of national and international spectrum regulations, national and international policy, and registration and coordination. ExperienceRF Engineer 2 - 2 years relevant experience with Bachelors in related field; 0 years experience with Masters in related field; or High School Diploma or equivalent and 6 years relevant experience.

    Columbia, MD
    • Full time

    Enlighten, honored as a Top Workplace from USA Today, is a leader in big data solution development and deployment, with expertise in cloud-based services, software and systems engineering, cyber capabilities, and data science. When extending an offer, Enlighten takes a variety of factors into consideration which include, but are not limited to, the role's function, internal equity and a candidate's education or training, work experience, certifications and key skills.

    Columbia, MD
    • Full time

    You will work closely with other talented engineers to create secure, enterprise-grade AI software solutions, including Model Context Protocol (MCP) servers, reusable AI skills, strict safety guardrails, and other AI framework capabilities that meet the complex needs of our clients. Build Model Context Protocol (MCP) servers and a library of reusable "skills" (function calling/tools) that enable AI models to safely interact with our internal databases, microservices, and external APIs.

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