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11 security clearance jobs found in Washington, DC

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LMI
Jan 07, 2026
Data Science Intern (USPS) - Summer 2026
LMI Tysons, VA, USA
Overview LMI is seeking a highly motivated Data Science & AI/ML Intern for Summer 202 6 to contribute to impactful projects in data science, software development, and artificial intelligence/machine learning (AI/ML). This internship provides an opportunity to work with cutting-edge technologies, analyze complex datasets, and develop AI-driven solutions that support LMI’s mission to provide innovative solutions for government clients.       This role is dedicated to bolstering our Advanced Analytics & AI practice and supporting our USPS customer.      *This position is currently full-time onsite at the customers Washington DC office.      LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at...
LMI
Mar 03, 2026
Data Analyst - TS/SCI Required
LMI Washington, DC, USA
Overview LMI is seeking a Data Analyst responsible for quality delivery of reporting and analysis as part of a Strategic Workforce Analytics program for a U.S. Federal Government Agency. This position will work in a classified environment to produce analyses and visualization to multiple clients within the department, agency, and federal government. The Data Analyst will collaborate with human resources SMEs, data engineers, and developers to query and structure data, develop metrics and visualizations, and deliver reports.    LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed.   Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the...
LMI
Aug 04, 2025
Data Scientist - TS/SCI with Polygraph Required
LMI Washington, DC, USA
Overview LMI is seeking a Data Scientist to support our Intelligence Community client.   LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed. Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the government, efficiently and effectively. With a focus on agility and collaboration, LMI serves the defense, space, healthcare, and energy sectors—helping agencies navigate complexity and outpace change. Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen missions and drive lasting value.   LMI offers a generous compensation package with excellent benefits that start the first day of employment. Business...
LMI
Dec 08, 2025
Energy Consultant
LMI Washington, DC, USA
Overview LMI seeks an Energy Consultant to provide expertise in energy project development, renewable energy systems, energy efficiency, and GHG (Greenhouse Gas) accounting and reporting. The ideal candidate will support federal facilities throughout their lifecycle by improving and expanding energy efficiencies and capabilities, with a focus on sustainability initiatives. Candidates should be based in the mid-Atlantic region, preferably near the Washington, DC area. This position will be supporting Customs and Border Protection.    LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed.   Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the...
Lockheed Martin
Jan 28, 2026
Cyber Applied Research Scientist (AR) / Onsite: Arlington, VA
Lockheed Martin Arlington, VA, USA
Description: “Exciting Cyber Opportunities Await You!” Are you ready to dive into the thrilling world of cybersecurity? For nearly two decades, the Advanced Concepts Laboratory (ACL) has been at the forefront of innovation, crafting cutting-edge cyber solutions for the Department of Defense (DoD) and Intelligence Community (IC). Our mission: to empower our nation's heroes with game-changing Information Operations (IO) and Computer Network Operations (CNO) technologies that tackle some of the toughest challenges head-on. Cyber is an ever-changing domain, and at ACL, we're the revolutionaries leading the charge. We're a passionate, problem-solving team that thrives on tackling the most complex, enigmatic issues. If you revel in the thrill of finding solutions when the path isn't clear, if the idea of creating groundbreaking operational capabilities excites you, and if you thrive in an open, collaborative environment, we want to hear from you! Our quest for cyber excellence...
LMI
Aug 04, 2025
Data Scientist (SME) - TS/SCI with Polygraph Required
LMI McLean, VA, USA
Overview LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed. Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the government, efficiently and effectively. With a focus on agility and collaboration, LMI serves the defense, space, healthcare, and energy sectors—helping agencies navigate complexity and outpace change. Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen missions and drive lasting value.   Position is on the research staff of a government consulting organization and will be based out of Reston, VA. This position provides verified mathematical and scientific techniques...
Lockheed Martin
Mar 03, 2026
Research Scientist Senior Staff - RF Systems/Algorithms
Lockheed Martin Severn, MD, USA
Description: The Rapid Solutions team with Lockheed Martin Space in Severn, MD, is looking for a research scientist with a background in RF sensors and algorithm development. The Rapid Solutions team is focused on building advanced radar and passive RF payloads, and developing operating concepts and algorithmic strategies for such payloads. This position will focus on advanced algorithms and high-speed implementations thereof for near-real-time applications. Basic Qualifications: • An advanced degree in a STEM field (physics, engineering, mathematics, or computer science) • Low-level simulation of scatter and sensor phenomenology to generate synthetic data for algorithm testing • Algorithm prototyping in python, Matlab, and/or C++ • Working closely with real-time and high-performance software/firmware engineers to port prototypes to flight hardware • High-level simulation of payload performance to support payload design and compliance analysis • Experience with coherent...
General Dynamics Mission Systems, Inc
Feb 12, 2026
Advanced Electrical Engineer
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Requires a Bachelor’s degree in Electrical Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 5+ years of job-related experience, or a Master's degree plus 3 years of job-related experience.  Must have experience with PCB and creating/updating schematics.      CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is preferred at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Key Responsibilities Design and analyze analog and digital electronic circuits including signal conditioning, power distribution, and analog-to-digital conversion Lead the design, analysis, and testing of underwater...
General Dynamics Mission Systems, Inc
Feb 12, 2026
Advanced Electrical Engineer
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Requires a Bachelor’s degree in Electrical Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 5+ years of job-related experience, or a Master's degree plus 3 years of job-related experience.     CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Duties and Responsibilities Develop new and modify existing electronics in the form of PCB designs Analyze and design analog and digital electronic circuits including analog signal conditioning and communication interfaces Integrate, test, troubleshoot, and verify electrical hardware...
LMI
Aug 04, 2025
Senior Data Modeling & Lead Data Scientist - Clearance Required
LMI Tysons, VA, USA
Overview LMI is seeking a seasoned Lead Data Scientist to spearhead the development, testing, and deployment of machine learning (ML) models. These models are crucial for encapsulating extensive discrete event simulation data, aiding a critical supply chain risk program for the Department of Defense.   LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed. Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the government, efficiently and effectively. With a focus on agility and collaboration, LMI serves the defense, space, healthcare, and energy sectors—helping agencies navigate complexity and outpace change. Headquartered in Tysons, Virginia,...
LMI
Aug 04, 2025
Senior Data Modeling Analyst - Clearance Required
LMI Tysons, VA, USA
Overview LMI is seeking a seasoned Data Scientist to support the development, testing, and deployment of machine learning (ML) models. These models are crucial for encapsulating extensive discrete event simulation data, aiding a critical supply chain risk program for the Department of Defense.   LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed. Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the government, efficiently and effectively. With a focus on agility and collaboration, LMI serves the defense, space, healthcare, and energy sectors—helping agencies navigate complexity and outpace change. Headquartered in Tysons, Virginia, LMI is...
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