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146 security clearance jobs found in Arlington, VA

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Information Technology Arlington, VA security clearance
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LMI
Mar 13, 2026
Cybersecurity Architect - Clearance Required
LMI Arlington, VA, USA
Overview LMI is seeking a Cybersecurity Architect to support LMI’s leading-edge, technology-enabled mission. In this fast-paced and matrixed environment, this position will develop cybersecurity requirements and solutions to ensure LMI’s technology meets all our risk and compliance requirements and will communicate our posture to stakeholders and customers. This position requires a Top Secret/SCI clearance. This position will be mostly on site at the client facility in Arlington, VA with some hybrid remote days at times.   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
Apr 08, 2026
Facilities Project Manager
LMI Washington, DC, USA
Overview LMI seeks an experienced project manager to provide project oversight support to a DHS facilities portfolio management program overseeing large capital construction projects within our client’s facility and infrastructure portfolio.  Join our team of collaborative self-starters focused on delivering practical and efficient solutions to help DHS keep our nation safe while supporting the facilitation of legitimate trade and travel.   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...
LMI
Mar 30, 2026
Mission Success and Training Manager
LMI Washington, DC, 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.     At LMI, we’re developing the next generation of RFID, GPS tagging, and sensor-mesh solutions that enable mission-critical operations for the Department of Defense (DoD). Our mission goes beyond...
LMI
Feb 12, 2026
Technical Program Manager – Clearance Required
LMI Washington, DC, USA
Overview The Technical Program Manager will play a pivotal role in the successful implementation of a GenAI-driven modernization effort for a key U.S. Army client. This position requires a seasoned professional with deep expertise in cloud platforms, Army standards, and agent-based AI systems, along with the ability to coordinate complex development efforts to ensure alignment with Army mission requirements and operational realities. This position requires an active Secret clearance.   The Technical Program Manager will be responsible for guiding the deployment and evolution of LMI’s LIGER® platform, an agentic AI tool, mitigating technical and programmatic risk, and overseeing the work of a deeply technical, multi-disciplinary team. This role serves as a senior Technical SME to the U.S. Army client, bridging hands-on technical execution with senior, non-technical leadership to ensure AI-driven solutions directly support mission outcomes.   The...
LMI
Feb 11, 2026
Forward Deployed Engineer - Clearance Required
LMI Washington, DC, USA
Overview LMI is seeking a skilled Forward Deployed Engineer in the Washington, DC region. Successful Forward Deployed Engineers demonstrate competency in integrating advanced technologies into existing business processes, building new functionality, ensuring successful software deployments, and working closely with customers. This role requires a combination of technical skills, strong communication, and the ability to quickly turn ideas into production caliber code. This role will work as part of the Sales Engineering team and engage directly with customers on-site, in a hybrid format, or remotely, as required by each customer including the potential for occasional short-term travel to customer locations across the United States. 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
Oct 11, 2025
Genesys Technical Specialist
LMI Washington, DC, USA
Overview LMI is seeking a dynamic and strategic Genesys Practice Manager to cultivate, strengthen, and advance our partnership with Genesys and lead go-to-market architecting for LMI’s Call Center as a Service (CCaaS) solutions. This role requires a self-starter who can drive strategic initiatives, manage go-to-market efforts, support business development teams as a platform expert, and enable LMI’s delivery teams to maximize value from the partnership. The ideal candidate blends Genesys technical acumen with business development savvy, and thrives in a mission-driven, collaborative environment.   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
Aug 04, 2025
DevSecOps Engineer (DHS)
LMI Washington, DC, USA
Overview Join our  cutting -edge generative AI ( GenAI ) platform,  LIGER™ , created by its technology studio, LMI  Forge . LIGER™ harnesses the power of advanced technology, data analytics, and the latest in machine learning and natural language processing to provide secure, private, and trustworthy GenAI solutions for government.   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...
LMI
Apr 02, 2026
Full Stack Developer - TS/SCI with Polygraph Required
LMI Washington, DC, USA
Overview LMI is currently seeking a qualified Full Stack Developer in support of our Defense Intelligence client in Washington, D.C. The ideal candidate will bring experience in multiple development technologies and methodologies as well as strong process transformation skills to enhance the team's capabilities. Relevant experience for this role may include any or all the following: software development, cloud engineering, management consulting, implementing software code, and debugging technical issues. Ability to research, test, build, and coordinate integration per government requirements.   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
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
Mar 19, 2026
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...
LMI
Mar 19, 2026
Technical Program Manager - Polygraph Clearance Required
LMI McLean, VA, USA
Overview Join our cutting-edge generative AI (GenAI) platform,  LIGER™ , created by its technology studio, LMI  Forge . LIGER™ harnesses the power of advanced technology, data analytics, and the latest in machine learning and natural language processing to provide secure, private, and trustworthy GenAI solutions for government.   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
Mar 19, 2026
Data Scientist - TS/SCI with Polygraph Required
LMI McLean, VA, USA
Overview LMI is seeking a Data Scientist  to support a U.S. Federal Government Agency working with classified media. This position will work with a team of developers, architects, and data scientists to build new capabilities for our client, bringing innovative ideas to challenging and complex problems. The Data Scientist will query and structure data, apply algorithms to develop machine learning models, develop metrics and data visualizations, and deploy visualization products to web-based environments. The Data Scientist will have a strong background in technology, the ability to structure data for reporting, and a strategic view for how to present analytic results to customers. This position will be responsible for presenting and explaining complex results to users. Join our team of collaborative self-starters focused on delivering practical and efficient solutions in support of our client's incredibly important mission.     LMI...
LMI
Apr 10, 2026
Software Development Intern (FIU Students)
LMI Tysons, 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. Responsibilities Analyzing complex processes from an enterprise perspective.    Assessing operations, identifying opportunities for enhancement, and developing...
LMI
Apr 01, 2026
Platform Engineer - Clearance Required
LMI Tysons, VA, USA
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
Apr 01, 2026
Cloud Engineer
LMI Tysons, VA, USA
Overview LMI is seeking a Cloud Engineer to support our LIGER platform to meet specific customer needs.   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 Responsible for evaluating...
LMI
Mar 20, 2026
Service Desk Technician
LMI Tysons, VA, USA
Overview This position provides frontline technical support to corporate staff and customers by diagnosing and resolving computer hardware and software problems. The candidate will work closely with technical, professional, and service teams to manage escalations, coordinate repairs, deliver user training, and ensure high-quality support services. Responsibilities Maintain, analyze, image, troubleshoot, and repair LMI computer systems, including hardware, software, peripherals, and end-user devices. Assist users via remote access and phone support. Conduct initial troubleshooting during the first user contact to isolate problems until resolution. Troubleshoot and resolve technical issues using Service Desk tools, ensuring timely, effective, and well documented resolution. Provide support for account creation, maintenance and removal, as well as troubleshoot standard desktop and corporate applications. Troubleshoot and...
LMI
Mar 20, 2026
Mission Engineering Manager - Clearance Required
LMI Tysons, VA, USA
Overview We’re building the next generation of RFID, GPS tagging, and sensor-mesh solutions that power mission-critical operations across the DoD. Our products move data, but more importantly, they move missions. As our Mission Engineering Manager, you’ll define the architecture, guide the accreditation path, and lead the engineers that make it real. You’ll be the technical backbone of our delivery—ensuring every system is secure, compliant, and ready to perform where it matters most.     This position requires a Secret clearance.     Hybrid (U.S.-Based) | Some Travel Required | Primary work location in Washington,DC; Norfolk, VA; or Mechanicsburg, PA     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....
LMI
Mar 19, 2026
Full-Stack Developer-TS/SCI/Polygraph
LMI Tysons, VA, USA
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 active Top Secret with Polygraph clearance. You must be a U.S. citizen. We are seeking a Full Stack Developer to support mission-focused application development within a secure cloud and on-premise environment. The selected candidate will contribute across the full software development lifecycle, including application design, UI development, backend services, and large-scale data processing workflows . This role requires experience building scalable applications that integrate cloud services, data platforms, and analytics tools to support operational and analytical systems. Responsibilities...
LMI
Mar 19, 2026
Intelligence Program Manager
LMI Tysons, VA, USA
Overview LMI is seeking a skilled Program Manager to support LMI’s Intelligence Programs account. The Portfolio Manager will lead multiple project delivery teams, drive program schedules, manage project financials, and ensure high quality delivery of LMI contracts.   A successful Program Manager will be highly skilled in project management, agile methodologies, communication, project planning, and financial management, as well as detail-oriented, able to hold teammates accountable to quality expectations and timelines, and responsive to evolving client needs. A background in digital transformation is highly desired. The Program Manager must demonstrate competency in leadership, strategic thinking, relationship management, multitasking, schedule management, and delivery excellence. The Program Manager must thrive in an environment working with internal and external stakeholders across various disciplines and can conduct technical and business-level...
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