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120 security clearance jobs found in Fort Belvoir, VA

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Security Clearance Fort Belvoir, VA security clearance
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LMI
Jun 07, 2026
Policy and Security Cooperation Advisor - Clearance Required
LMI Arlington, VA
Overview LMI is seeking a skilled Policy and Security Cooperation (SC) Advisor at a customer site in the Washington, DC area. A successful candidate will demonstrate competency in project execution, leadership critical thinking, and relationship management, while upholding the highest standard of ethical behavior.   This position requires you to be at the Pentagon 3-4 days a week.   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...
LMI
Jun 25, 2026
Lead Technical Advisor - Clearance Required
LMI Fort Belvoir, VA
Overview The Lead Technical Advisor will play a pivotal role in the successful implementation of a modernization effort for a key US Army client. This position requires a seasoned professional with a deep understanding of cloud technologies, Army standards, and the ability to coordinate development efforts to ensure alignment with Army requirements and capabilities. The Lead Technical Advisor will   be required   to connect deep technical implementations with high-level, non-technical leadership to connect solutions to mission requirements while moving fast,   building   and deploying while communicating, driving consensus,   team building   and owning an end-to-end solution process with our 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...
Lockheed Martin
Jun 02, 2026
Satellite Mission Engr Staff
Lockheed Martin Fort Belvoir, VA
Description: WHO WE ARE Lockheed Martin is a global leader in aerospace, defense, and technology solutions, dedicated to pushing the boundaries of innovation and shaping the future of the industry. With a rich legacy of excellence and a commitment to delivering advanced capabilities to our customers, we are proud to be at the forefront of cutting-edge technology and engineering. LM SPACE: WHAT WE'RE DOING Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. And we’re reimagining how space can connect us, ensuring security and prosperity. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on...
Lockheed Martin
Jun 02, 2026
Product Quality Engineer/ Automation Specialist (Clearance Rq'd)
Lockheed Martin Fort Belvoir, VA
Description: WHO WE ARE Lockheed Martin is a global leader in aerospace, defense, and technology solutions, dedicated to pushing the boundaries of innovation and shaping the future of the industry. With a rich legacy of excellence and a commitment to delivering advanced capabilities to our customers, we are proud to be at the forefront of cutting-edge technology and engineering. LM SPACE: WHAT WE'RE DOING Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. And we’re reimagining how space can connect us, ensuring security and prosperity. THE WORK Lockheed Martin is seeking a talented level 3 Product Quality Engineer with a TS/SCI w/ Poly clearance to work from our Fort Belvoir, VA location . Lockheed Martin is seeking an Engineer for the Product...
LMI
Jun 09, 2026
Data Scientist (Vantage) - Clearance Required
LMI Arlington, VA
Overview LMI is seeking a Data Scientist to   assist  with Army data model , pipeline, and visualization  development .  Th is  Data Scientist will create  data model s  working from mock visualizations and raw data inputs ; leverage python,  PySpark , Foundry, and code repositories to develop an ar chitecture plan ;  extract, transform, and load data into Vantage; and  use  Vantage  workshops  to develop visualizations. Active Secret clearance required .   Location: Hybrid; at least 3 days on client site in Crystal City VA or Aberdeen MD. Open to Remote   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...
LMI
May 14, 2026
Data Engineer (Vantage) - Clearance Required
LMI Arlington, VA
Overview LMI is seeking a Data Engineer to build the pipelines that power Army leadership decisions. You will transform raw data from authoritative Army sources into structured, actionable "Objects" within the Vantage (Palantir Foundry) environment.   Focus: Scaling data pipelines and ontology management within the Army Vantage/Advana ecosystem.   Active Secret clearance required .   Location: Hybrid; at least 3 days on client site in Crystal City VA or Aberdeen MD   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...
LMI
Jul 06, 2026
Event Planner - Clearance Required
LMI Arlington, VA
Overview LMI is seeking a skilled Event Planner at a client location in the National Capital Region. A successful Event Planner will demonstrate competency in project execution, leadership critical thinking, relationship management, and business growth while upholding the highest standard of ethical behavior.   A minimum of 3 days is required on client site in Arlington, VA.   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 civilian sectors—helping...
LMI
Jul 02, 2026
Business Process Analyst (DBO Front Office) - Clearance Required
LMI Arlington, VA
Overview LMI seeks a Business Process Analyst (Executive Administrative Assistant) to support our federal customer in Arlington, Virginia. LMI is a consultancy dedicated to improving the business of government, drawing from deep expertise in advanced analytics, digital services, logistics, and management advisory services.   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....
LMI
Jun 22, 2026
Senior Research Specialist (DBO HR) - clearance required
LMI Arlington, VA
Overview LMI is seeking a Senior Research Specialist to support our team within the Office of the Under Secretary of Defense, Acquisition and Sustainment (OUSD(A&S)).  This role supports the A&S human resources staff in the Directorate for Business Operations by advising senior level authorities with military staffing, performance appraisals, awards, and professional development to comply with regulatory mandates. Communication with the organization’s senior-level staff and collaboration with a broad range of personnel is also required. The position will be located at the Pentagon. This position requires an Active Secret clearance.   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...
LMI
Jul 02, 2026
Product Manager, Supply Chain Risk Management - Clearance Required
LMI Tysons, VA
Overview LMI is seeking a Product Manager to lead strategy, execution, stakeholder alignment, and user success activities for an enterprise Supply Chain Risk Management platform that supports supply chain visibility, analytics, and decision support across complex organizations. This role is responsible for translating mission and user needs into product direction, managing priorities across data, development, and analytic workstreams, and ensuring the platform delivers scalable capabilities that support both enterprise objectives and customer-specific use cases. The ideal candidate brings deep experience delivering mission software through balanced agile teams in government or defense environments, with the technical judgment to guide modern platform development from concept through production deployment.   LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and...
LMI
Jul 02, 2026
DevSecOps/SRE Engineer
LMI Tysons, VA
Overview LMI is seeking a skilled DevSecOps/SRE Engineer  at our headquarters office in Tysons, VA.   As a  DevSecOps/SRE Engineer at LMI, you will be at the forefront of modernizing and maintaining secure, resilient, and efficient systems for federal clients. You will play a vital role in designing and managing robust CI/CD pipelines, automating operations through Infrastructure as Code (IaC), managing containerized workloads, and ensuring compliance with federal security frameworks. Additionally, your expertise in monitoring, alerting, and incident response will contribute to maintaining reliable application environments that meet critical Service Level Objectives (SLOs). Applicants will need to obtain and maintain a Public Trust Clearance   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...
LMI
Jul 02, 2026
Database Developer
LMI Tysons, VA
Overview LMI is seeking a skilled Database Developer  at our headquarters office in Tysons, VA. As Database Developer at LMI, you will play a critical role in supporting federal systems through advanced database development and administration tasks. You’ll work collaboratively within Agile teams to implement and maintain resilient database systems aligned with federal compliance standards. From designing logical schemas to optimizing cloud databases, you’ll bring expertise across the database lifecycle to manage data security, performance, and scalability for mission-critical applications. Applicants will need to obtain and maintain a Public Trust Clearance.   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...
LMI
Jul 01, 2026
Senior Data Scientist (Clearance Required)
LMI Tysons, VA
Overview LMI is seeking a Senior Data Scientist to build and deploy machine learning capabilities for a U.S. Army customer. You will move models from concept to production on LMI platforms, working alongside engineers, operators, and mission users to support Army analysis and decision-making. You will be responsible for the full scope of the work, from data preparation through models deployed and used in the customer’s environment. This is a hybrid position based in Washington, DC, with regular time on client site and occasional travel to LMI HQ in Tysons, VA. This position requires an active Secret clearance, for which you must be a U.S. citizen. 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...
LMI
Jun 04, 2026
Information Systems Security Officer (ISSO) - Navy
LMI Tysons, VA
Overview LMI, a consultancy dedicated to enhancing government transformation and readiness, is seeking a highly skilled Information Systems Security Officer (ISSO) to support the Naval Autonomous Data Collection System (NADACS) portfolio. This pivotal role ensures that NADACS systems operate within approved cybersecurity frameworks while fostering mission success through compliance, system integrity, and strong stakeholder collaboration. This is a unique opportunity to drive cybersecurity excellence in a critical Navy logistics program. As an ISSO in the NADACS portfolio, you'll play a pivotal role in securing systems that enhance asset tracking and fleet readiness on a global scale. Join LMI in a mission-focused role where innovation meets impact.    This position requires an active Secret clearance . Preference for location in Norfolk, VA, Mechanicsburg, PA or Tysons, VA.    LMI is a new breed of digital solutions provider dedicated to...
LMI
Apr 01, 2026
Platform Engineer - Clearance Required
LMI Tysons, VA
Overview   LMI, a trusted government contractor with decades of experience delivering cutting-edge solutions, is seeking a driven and innovative Platform Engineer to support the deployment and maintenance of IronSled, a DevSecOps product tailored for government-authorized environments. IronSled accelerates software development and deployment in highly regulated environments by meeting stringent federal security requirements. The product streamlines accreditation processes for secure infrastructure within authorized government networks on cloud or on-premise systems. This position requires and active Secret clearance. This position can be performed remotely or hybrid (with occasional on-site work in government-authorized environments).    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...
LMI
Mar 04, 2026
Full-Stack Developer with Agentic AI
LMI Tysons, VA
Overview LMI is seeking a Full-Stack Developer with proficiency in Agentic AI to join the Chief Technology Office development team. This position requires an individual who thrives in dynamic environments, rapidly delivering results while maintaining flexibility to adapt to shifting priorities. This position requires the ability to obtain a Secret clearance; active Secret clearance preferred. You must be a U.S. citizen. 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,...
Odyssey Systems Consulting Group
Jul 02, 2026
Full time
Principal Security Assistant
Odyssey Systems Consulting Group Washington, DC
Position Summary Odyssey Systems has an exciting opportunity for a Principal Security Assistant providing support to the Command, Control, Communications, and Battle Management Division (C3BM).   Command, Control, Communications, and Battle Management (C3BM) has been tasked with delivering an integrated Department of the Air Force (DAF) Battle Network providing resilient decision advantage and enabling the USAF, USSF, Joint, and Coalition Force to win against the pacing challenge. C3BM supports execution in many different focus areas. C3BM’s main efforts are Architecture and Systems Engineering (ASE), Operational Response Team (ORT), and multiple mission integration teams such as Air, Maritime and multiple acquisitions consisting of both the Advanced Battle Management System (ABMS) and Space.   The Security Assistant will provide support to perform administrative security functions under the direction of the activity security...
LMI
Jun 24, 2026
Data Governance Analyst - TS/SCI with Polygraph Required
LMI Washington, DC
Overview LMI seeks a Data Governance Analyst who will work on-site at the client organization located at Bolling AFB in Washington, DC.   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. Responsibilities Serve as a...
LMI
Jun 30, 2026
Senior Acquisition Specialist
LMI Washington, DC
Overview LMI seeks a Senior Acquisition Specialist to support a Customs and Border Protection program. The Senior Acquisition Specialist will provide leadership and oversight across acquisition support for a large, complex CBP program supporting mission-critical activities. The Team Lead leads a team of contractor acquisition and program management professionals, ensuring high-quality delivery of acquisition products and services, driving innovation and process improvements, and collaborating closely with program managers, contracting officials, and other stakeholders. This role requires a strong customer-service mindset, deep acquisition expertise, and proactive engagement capabilities. This role requires on-site presence in Washington, DC 1-2 days per week   Join our team of collaborative self-starters focused on delivering practical and efficient solutions to help our client keep U.S. borders safe and facilitate travel and trade. As part of our...
LMI
Jun 11, 2026
Contract Support Specialist, DHS CBP
LMI Washington, DC
Overview LMI seeks Contract Support Specialist to support U.S. Customs and Border Protection (CBP) programs in the National Capital Region. Join our team of collaborative self-starters focused on delivering practical and efficient solutions to help our client keep U.S. borders safe and facilitate travel and trade. The Contract Support Specialist serves as the Government's advisor and Subject Matter Expert for contracting activities and will directly support the Government Contracting Officer Representative (COR). As part of our high-performing team, you will augment our vital work to provide “eyes and ears” technology to protect our nation. The Contract Support Specialist will provide dedicated acquisition and contract administration support to the COR at U.S. CBP.   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...
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