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1053 security clearance jobs found

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LMI
Aug 05, 2026
Cybersecurity Information System Security Engineer - Clearance Required
LMI Fort Belvoir, VA
Overview LMI is seeking a skilled Senior Cybersecurity Information Systems Security Engineer (ISSE) to support US Army  Capability Program Executive (CPE) Gound   office  at Ft. Belvoir, Virginia. The ISSE will drive efforts that support software and hardware cybersecurity Risk Management Framework (RMF) Authority to Operate (ATO).     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...
LMI
Jul 30, 2026
FSO / Security Lead w/active Top Secret clearance
LMI Washington, DC
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, homeland, healthcare, and intelligence 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 LMI is  seeking  a driven, results-oriented FSO / Security Lead to own all aspects of personnel,...
Lockheed Martin
May 23, 2026
Senior Network Security Engineer (Top Secret Clearance)
Lockheed Martin Colorado Springs, CO
Description: What We’re Doing At Lockheed Martin, our Command and Control, Battle Management and Communications (C2BMC) National Team (C2NT) is pioneering the development and integration of cutting-edge technologies to advance the Missile Defense System, safeguarding the United States and its allies. Our collaborative and agile organization operates in a fast-paced environment, driving innovation through tasks such as sensor/weapon integration, algorithm development, user interface development, automated testing, cyber security, enterprise/infrastructure services, and enhancing leading-edge missile defense technologies. The Work Designs, plans, and validates secure network communications systems for the C2BMC program. You develop detailed specifications, schematics, and capacity forecasts; select hardware/software; implement firewalls, switches, routers, and security relevant devices; and conduct rigorous testing. You apply DoW RMF/CSRMC/STIG compliance, produce required IA...
LMI
Feb 06, 2026
ISSO - Information System Security Officer - Clearance Required
LMI Colorado Springs, CO
Overview LMI is seeking a highly motivated mid-level Information System Security Officer (ISSO) looking for hands-on experience and opportunity for career growth under direction of the Chief Information Security Officer.   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...
DLH
Aug 14, 2026
DCGS-N Configuration Management Specialist III (Job 1422)
DLH North Charleston, SC
About Us DLH delivers improved health and national security readiness solutions for federal programs through science research and development, systems engineering and integration, and digital transformation. Our experts in public health, performance evaluation, and health operations solve the complex problems faced by civilian and military customers alike by leveraging advanced tools – including digital transformation, artificial intelligence, data analytics, cloud enablement, modeling, and simulation, and more. DLH is dedicated to the idea that “Your Mission is Our Passion” and brings a unique combination of government sector experience, proven methodology, and unwavering commitment to innovation to improve the lives of millions. Overview The DCGS-N Configuration Management Specialist handles production and installation CM processes and activities, supports CM policies and procedures for configuration planning, configuration...
Lockheed Martin
Aug 14, 2026
Systems Engineer Staff
Lockheed Martin King of Prussia, PA
Description: WHAT WE'RE DOING Lockheed Martin is advancing next-generation command and control capabilities to support critical missions through scalable, data-driven systems. You will be joining the Enterprise Mission C2 (EMC2) organization supporting the Tactical Tomahawk Weapons Control System (TTWCS) program in Valley Forge, PA. We are seeking an experienced Systems Engineer with direct experience in modern development practices and technologies to support the TTWCS software modernization effort, working in partnership with external organizations across the TTWCS System Development Activity (SDA). THE WORK As your primary responsibility, you will operate as a systems engineer for TTWCS modernization efforts, playing an active role across all software development activities – from its design and description to hands-on development and testing. This role will help in shaping the next generation of TTWCS software architecture and execution, and ensuring systems...
Lockheed Martin
Aug 13, 2026
Integration and Test Leader
Lockheed Martin Offutt Air Force Base, NE
Description: WHAT WE'RE DOING By bringing together people that use their passion for purposeful innovation, at Lockheed Martin we keep people safe and solve the world's most complex challenges. Our people are some of the greatest minds in the industry and truly make Lockheed Martin a great place to work. With our employees as our priority, we provide diverse career opportunities designed to propel development and boost agility. Our flexible schedules, competitive pay, and comprehensive benefits enable our employees to live a healthy, fulfilling life at and outside of work. At Lockheed Martin, we place an emphasis on empowering our employees by fostering innovation, integrity, and exemplifying the epitome of corporate responsibility. Your Mission is Ours. THE WORK Lockheed Martin has been embedded with the USSTRATCOM Nuclear Mission for 30+ years and has a track record of bringing innovative mission software solutions to this domain. Lockheed Martin Rotary & Mission...
Lockheed Martin
Aug 13, 2026
Software Engineer Sr.
Lockheed Martin Littleton, CO
Description: WHO WE ARE At C2 Ground, we are a diverse group of programs unified in our mission to support various customers and capabilities within the Command and Control Domain. As a "Family of Programs" we deliver a wide range of hardware and software solutions that provide mission-critical capabilities to our customers. Our software products focus on key areas such as Tasking, Processing, Exploitation, and Dissemination (TPED), Communications, and Mission Planning Applications, while our hardware products include customizable and transportable mobile ground shelters and mission equipment designed to thrive in diverse environments and climates. WHAT WE'RE DOING On C2 Ground, we harness advanced technologies to deliver and maintain mission-relevant capabilities for our customers. We utilize a range of innovative tools and methodologies, including the Scaled Agile Framework (SAFe), Atlassian Tool Suite, and DevSecOps, to ensure consistent value delivery, effective...
LMI
Aug 13, 2026
Management Analyst/Mission Support Specialist
LMI Washington, DC
Overview LMI is seeking multiple Management Analysts/Mission Support Specialists to support a federal program management office in Washington, DC. 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 high-performing team, you will augment our vital work to provide “eyes and ears” technology to protect our nation. Some travel may be required to stations on the southwest and other borders.   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
Aug 12, 2026
DevSecOps Eng, Staff / Top Secret / Onsite - GA
Lockheed Martin Marietta, GA
Description: We are looking for a passionate and experienced DevSecOps Engineering Lead to join our Classified IT Operations team in Marietta, GA. As a key contributor within our Enterprise Business Digital Transformation organization—aligned to the Aeronautics Business Area—you will help shape and accelerate our DevSecOps transformation, driving innovation in the development and maturity of secure, mission-critical classified environments. The ideal candidate is a proactive problem-solver with deep expertise in DevSecOps methodologies, strong familiarity with Agile practices, and a proven ability to deliver results under pressure. You should thrive in fast-paced environments, communicate with clarity across technical and non-technical audiences, and lead by example in cultivating a high-performance culture. In this role, you will be responsible for designing, integrating, implementing, and supporting cutting edge IT solutions. Your leadership across infrastructure,...
U. S. National Security Agency
Aug 12, 2026
Senior Technical Leader/ Chief, Program Protection, Security, and Intelligence (DC)
U. S. National Security Agency Fort Meade, MD
Responsibilities: The Chief for Program Protection, Security and Intelligence is responsible for the development of concepts, policies, security and intelligence programs to support the specialized mission of the TF through the oversight and direction of group efforts. As the senior policy advisor to the Director and expert on interagency coordination processes and procedures, the incumbent will oversee, guide and direct major policy development and coordination projects. Leads a security team supporting NS/EP programs with responsibility to develop, establish guidance, and implement programs in support of operations for the organization's Operations Security, Specialized Sensitive Support, Intelligence, Counterintelligence (Cl), and Enhanced Operational Support Programs enabling security protection of classified facilities and information at various locations. Advises senior executives and staff on new developments and advances in techniques in the specialty area of Operational...
SAIC
Aug 12, 2026
IT Specialist
SAIC FL
Description SAIC has an immediate opening for an IT Specialist to support the USSOCOM SITEC 3 Enterprise Operations and Maintenance (EOM) contract. The USSOCOM mission is to provide fully capable Special Operations Forces (SOF) to defend the United States and its interests and synchronize planning for global operations against terrorist networks. You will support the USSOCOM mission as we partner with SOF military and civilian members to provide world-class IT services and support that connect over 70,000 users around the world in the areas of software development/maintenance, network services, security, end-user computing, and test and evaluation. This position is based on-site at MacDill AFB Florida. Duties include but are not limited to: Providing incident response using multiple software applications, including Remedy. Providing installation, tuning, testing, operating, monitoring, upgrading, patching, break/fix, defense, and management of WAN and LAN routing and...
SAIC
Aug 12, 2026
Cybersecurity Specialist
SAIC FL
Description SAIC is hiring a Cybersecurity Specialist located in Pensacola, FL . This position will be supporting Training & Education Management Systems for Naval Education and Training Command (NETC). The role will support our Programs of Record; Corporate Enterprise Training Activity Resource Systems (CeTARS) for both schoolhouse & corporate, Navy & Joint MyEducation (MyED), Naval Education and Training Future Officer and Citizenship User System (NETFOCUS), Navy Inspector General Hotline Tracking System (NIGHTS), Navy Enlisted Advancement System (NEAS), Authoring Instructional Materials (AIM), and Learning Assessment System (LAS). As a Cybersecurity Specialist, you'll be responsible for maintaining systems' Authority to Operate by ensuring compliance and security posture, coordinating secure access for all systems and subsystems, and integrating robust security measures into the DevSecOps software development lifecycle to safeguard organizational assets....
SAIC
Aug 12, 2026
SW Engineer Associate
SAIC FL
Description SAIC is hiring a Software Developer located in Pensacola, FL . This position will be supporting Training & Education Management Systems for Naval Education and Training Command (NETC). The role will support our Programs of Record; Corporate Enterprise Training Activity Resource Systems (CeTARS) for both schoolhouse & corporate, Navy & Joint MyEducation (MyED), Naval Education and Training Future Officer and Citizenship User System (NETFOCUS), Navy Inspector General Hotline Tracking System (NIGHTS), Navy Enlisted Advancement System (NEAS), Authoring Instructional Materials (AIM), and Learning Assessment System (LAS). The Software Developer will require: High-quality software engineering advisory services, software systems planning, integration, and architecture support. Comprehensive support, maintenance, and enhancement of software using a technology stack that includes AWS technologies, PL/SQL, Java, Visual Studio/C#, JavaScript, Oracle...
SAIC
Aug 12, 2026
Software Engineer Associate
SAIC FL
Description SAIC is hiring a Software Developer located in Pensacola, FL . This position will be supporting Training & Education Management Systems for Naval Education and Training Command (NETC). The role will support our Programs of Record; Corporate Enterprise Training Activity Resource Systems (CeTARS) for both schoolhouse & corporate, Navy & Joint MyEducation (MyED), Naval Education and Training Future Officer and Citizenship User System (NETFOCUS), Navy Inspector General Hotline Tracking System (NIGHTS), Navy Enlisted Advancement System (NEAS), Authoring Instructional Materials (AIM), and Learning Assessment System (LAS). The Software Developer will require: High-quality software engineering advisory services, software systems planning, integration, and architecture support. Comprehensive support, maintenance, and enhancement of software using a technology stack that includes AWS technologies, PL/SQL, Java, Visual Studio/C#, JavaScript, Oracle...
SAIC
Aug 12, 2026
Sr. Information Systems Security Officer
SAIC MD
Description Varen, an SAIC company is seeking an experienced Sr. Information Systems Security Officer to join our team. This position is located in Suitland, Maryland and requires a TS/SCI with polygraph. Key Responsibilities: Support the creation and continuous maintenance of the IT Systems Accreditation Documentation Packages (SSP, SCTM, CONOPs, A&A, Test Plan, SOP's. User Guides etc). Provide IA security on-site support for all formal IT systems and A&A testing. Ensure all on-site contract IT systems personnel are trained on all IA procedures and requirements for each of the IT systems. Provide IA Security qualified personnel resources to support the continued accreditation and security operation of the information system under the RMF Continuous Monitoring Plan. Review all hardware and software changes proposed and/or being implemented for appropriate security operation, providing configuration management support as it relates to the security...
SAIC
Aug 12, 2026
Program Manager- Special Operations
SAIC FL
Description SAIC is seeking a highly qualified TS/SCI Cleared Program Manager (PM) to provide management, direction, administration, and leadership for the execution of a critical Task Order (TO) supporting the SOF Enterprise Digital Talent Program (SEDTP). This position plays a vital role in ensuring the successful deployment and execution of services across the SOCOM Enterprise, with a focus on quality assurance, personnel management, and compliance with contractual requirements. Work is performed on site in: Tampa, FL. The ideal candidate is a proven leader with a comprehensive understanding of the Special Operations Forces (SOF) Enterprise, a corporate team player, and an expert in managing personnel across diverse commands and overseas locations. The Program Manager will be responsible for: Providing overall management, leadership, and direction for the execution of the Task Order. Implementing quality assurance measures to meet performance metrics as outlined in...
SAIC
Aug 12, 2026
Cyber Defense Analyst
SAIC MD
Description SAIC is seeking a candidate to fill a Cyber Defense Analyst position on a joint Contractor-Government Cyber Protection Team with our customer at Ft. Meade, MD . Job Duties: Configuration, management, and optimization of intrusion detection systems for both host and network Integrate and manage network sensors Conduct threat analysis utilizing various sources to identify threats Configuration, management and optimization of intrusion detection systems Configuration and design of deployable network kits that include switches, routers, taps, hypervisors and network storage devices to ensure seamless integration and optimal performance Malware triage Cyber threat emulation to assess defensive posture and capabilities while in a controlled environment Threat hunting to identify advanced persistent threats Technical writing in support of findings and providing security recommendations in order to secure networks Qualifications...
SAIC
Aug 12, 2026
Cyber Defense Analyst
SAIC MD
Description SAIC is seeking a candidate to fill a Cyber Defense Analyst position on a joint Contractor-Government Cyber Protection Team with our customer at Ft. Meade, MD . Job Duties: Configuration, management, and optimization of intrusion detection systems for both host and network Integrate and manage network sensors Conduct threat analysis utilizing various sources to identify threats Configuration, management and optimization of intrusion detection systems Configuration and design of deployable network kits that include switches, routers, taps, hypervisors and network storage devices to ensure seamless integration and optimal performance Malware triage Cyber threat emulation to assess defensive posture and capabilities while in a controlled environment Threat hunting to identify advanced persistent threats Technical writing in support of findings and providing security recommendations in order to secure networks Qualifications...
SAIC
Aug 12, 2026
Cyber Defense Analyst
SAIC MD
Description SAIC is seeking a candidate to fill a Cyber Defense Analyst position on a joint Contractor-Government Cyber Protection Team with our customer at Ft. Meade, MD . Job Duties: Configuration, management, and optimization of intrusion detection systems for both host and network Integrate and manage network sensors Conduct threat analysis utilizing various sources to identify threats Configuration, management and optimization of intrusion detection systems Configuration and design of deployable network kits that include switches, routers, taps, hypervisors and network storage devices to ensure seamless integration and optimal performance Malware triage Cyber threat emulation to assess defensive posture and capabilities while in a controlled environment Threat hunting to identify advanced persistent threats Technical writing in support of findings and providing security recommendations in order to secure networks Qualifications...
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