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334 senior security engineer jobs found

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Information Technology United States senior security engineer
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Onsite  (334)
DLH
Jun 26, 2026
Senior Cyber Security Engineer (Job 1384)
DLH Baltimore, MD
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. With over 2,400 employees dedicated to the idea that “Your Mission is Our Passion,” DLH brings a unique combination of government sector experience, proven methodology, and unwavering commitment to innovation to improve the lives of millions. Overview The Senior Cybersecurity Engineer serves as a technical leader within the National Institute on Aging (NIA) Information System Security Office (ISSO) by designing, implementing, and...
DLH
Jun 18, 2026
Senior Cyber Security Engineer (Job 1356)
DLH Bethesda, MD
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. With over 2,400 employees dedicated to the idea that “Your Mission is Our Passion,” DLH brings a unique combination of government sector experience, proven methodology, and unwavering commitment to innovation to improve the lives of millions. Overview The Senior Cybersecurity Engineer serves as a technical leader within the National Institute on Aging (NIA) Information System Security Office (ISSO) by designing, implementing, and...
Lockheed Martin
Jul 02, 2026
Cyber Security Engineer Senior
Lockheed Martin Colorado Springs, CO
Description: WHAT WE’RE DOING At Lockheed Martin's Rotary and Mission System's Cyber Resiliency organization, we are dedicated to engineering and deploying cutting-edge cyber defense solutions across our corporation. Our focus on cybersecurity is paramount to ensuring mission success for our customers, even in the face of evolving cyber threats. THE WORK As a member of our team, you will be involved in a variety of activities aimed at enhancing the cyber resiliency of the USSF Space Fence System radar. This includes tasks such as: • Hardening operating systems, applications, and network devices • Conducting vulnerability scans • Continuous monitoring of the security posture of the system • Assisting with Government Certification Test and Evaluation (CT&E) and Vulnerability Testing • Implementing security updates and patches • Applying configuration changes to ESS, ACAS, and SolarWinds security tools • Providing support to maintain the Certification and Accreditation...
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...
Lockheed Martin
Apr 28, 2026
Cyber Security Engineer Senior (Represented)
Lockheed Martin Moorestown, NJ
Description: WHAT WE’RE DOING At Lockheed Martin's Rotary and Mission System's Cyber Resiliency organization, we are dedicated to engineering and deploying cutting-edge cyber defense solutions across our corporation. Our focus on cybersecurity is paramount to ensuring mission success for our customers, even in the face of evolving cyber threats. WHO WE ARE Lockheed Martin is driven by innovation, integrity, and a commitment to excellence. We believe in applying the highest standards of business ethics and visionary thinking to everything we do. As part of our team, you will collaborate with a cross functional team of technical professionals including software and systems engineers and radar operators to maintain the cybersecurity posture of the Space Fence Radar System. WHO YOU ARE We are looking for individuals who are passionate about cybersecurity and eager to contribute their skills and expertise to our mission. You should have demonstrable knowledge in...
Arrow Electronics
Jul 07, 2026
Sr. Linux Red Hat Infrastructure Engineer
Arrow Electronics Centennial, CO
Position: Sr. Linux Red Hat Infrastructure Engineer Job Description: Arrow Electronics is a global provider of products, services, and solutions to industrial and commercial users of electronic components and enterprise computing solutions. Arrow Electronics guides innovation forward for over 220,000 leading technology manufacturers and service providers. With 2025 sales of $30.9 billion, Arrow develops technology solutions that improve business and daily life. The company maintains 228 locations worldwide with over 85 countries served. A Fortune 148 company with 21,500 employees worldwide, Arrow brings technology solutions to a breadth of markets, including telecommunications, information systems, transportation, medical, industrial, and consumer electronics. Arrow provides specialized services and expertise across the entire product lifecycle. Arrow does this by connecting customers to the right technology at the right place, time, and price. Arrow provides extraordinary...
Lockheed Martin
Jul 07, 2026
Safety Engineer Stf
Lockheed Martin Liverpool, NY
Description: WHO WE ARE At Lockheed Martin Rotary and Mission Systems, we are driven by innovation and integrity. We believe that by applying the highest standards of business ethics and visionary thinking, everything is within our reach – and yours as a Lockheed Martin employee. Lockheed Martin values your skills, training, and education. Come and experience your future! WHAT WE'RE DOING An Engineer working in the System Safety Engineering group will contribute to a wide variety of projects based on our business needs. The role involves working as an independent contributor alongside team leadership to perform Systems Safety Engineering tasks in support of project objectives. As a System Safety Engineer, you will be part of a team of experienced safety and specialty engineers working on various missile launching system programs. Your primary responsibility will be to contribute to analysis and design support efforts for all aspects of the system safety programs, ensuring that...
Lockheed Martin
Jul 07, 2026
Lead Systems Engineer (Radar Design)
Lockheed Martin Camden, NJ
Description: As a part of the Lockheed Martin community, we take on challenges and find solutions using creativity and collaboration. If you’re looking to be a part of a passionate team solving these complex problems, then Rotary and Mission Systems is the place for you. 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 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...
Lockheed Martin
Jul 07, 2026
Cyber Defense Incident Responder Senior - Clearance Required
Lockheed Martin MD
Description: WHO WE ARE Lockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step up to one of today’s most daunting challenges: the use of advanced electronics to undermine our way of life. As a cyber security professional at Lockheed Martin, you’ll protect the networks that our citizens and the world depend upon each minute: Financial assets. Healthcare information. Critical infrastructure. Hazardous materials. The uninterrupted flow of energy that keeps modern life moving. Here, you’ll work with cybersecurity experts on the forefront of threat protection and proactive prevention. In this fast-paced, real-world environment, you’ll draw on all your education and experience as well as the resources of Lockheed Martin to keep the threats at bay. THE WORK The scope of this effort encompasses tasks that provide USCYBERCOM with the sustained ability to fulfill its mission to direct, synchronize, and coordinate cyberspace planning and operations to...
Lockheed Martin
Jul 07, 2026
Cyber Operations Planner Senior - Clearance Required
Lockheed Martin MD
Description: WHO WE ARE Lockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step up to one of today’s most daunting challenges: the use of advanced electronics to undermine our way of life. As a cyber security professional at Lockheed Martin, you’ll protect the networks that our citizens and the world depend upon each minute: Financial assets. Healthcare information. Critical infrastructure. Hazardous materials. The uninterrupted flow of energy that keeps modern life moving. Here, you’ll work with cybersecurity experts on the forefront of threat protection and proactive prevention. In this fast-paced, real-world environment, you’ll draw on all your education and experience as well as the resources of Lockheed Martin to keep the threats at bay. THE WORK The scope of this effort encompasses tasks that provide USCYBERCOM with the sustained ability to fulfill its mission to direct, synchronize, and coordinate cyberspace planning and operations to...
Lockheed Martin
Jul 07, 2026
Cyber Operations Planner SME - Clearance Required
Lockheed Martin MD
Description: WHO WE ARE Lockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step up to one of today’s most daunting challenges: the use of advanced electronics to undermine our way of life. As a cyber security professional at Lockheed Martin, you’ll protect the networks that our citizens and the world depend upon each minute: Financial assets. Healthcare information. Critical infrastructure. Hazardous materials. The uninterrupted flow of energy that keeps modern life moving. Here, you’ll work with cybersecurity experts on the forefront of threat protection and proactive prevention. In this fast-paced, real-world environment, you’ll draw on all your education and experience as well as the resources of Lockheed Martin to keep the threats at bay. THE WORK The scope of this effort encompasses tasks that provide USCYBERCOM with the sustained ability to fulfill its mission to direct, synchronize, and coordinate cyberspace planning and operations to...
Lockheed Martin
Jul 07, 2026
Cyber Policy and Strategy Planner Junior - Clearance Required
Lockheed Martin MD
Description: WHO WE ARE Lockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step up to one of today’s most daunting challenges: the use of advanced electronics to undermine our way of life. As a cyber security professional at Lockheed Martin, you’ll protect the networks that our citizens and the world depend upon each minute: Financial assets. Healthcare information. Critical infrastructure. Hazardous materials. The uninterrupted flow of energy that keeps modern life moving. Here, you’ll work with cybersecurity experts on the forefront of threat protection and proactive prevention. In this fast-paced, real-world environment, you’ll draw on all your education and experience as well as the resources of Lockheed Martin to keep the threats at bay. THE WORK The scope of this effort encompasses tasks that provide USCYBERCOM with the sustained ability to fulfill its mission to direct, synchronize, and coordinate cyberspace planning and operations to...
Lockheed Martin
Jul 07, 2026
Cyber Policy and Strategy Planner Journeyman - Clearance Required
Lockheed Martin MD
Description: WHO WE ARE Lockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step up to one of today’s most daunting challenges: the use of advanced electronics to undermine our way of life. As a cyber security professional at Lockheed Martin, you’ll protect the networks that our citizens and the world depend upon each minute: Financial assets. Healthcare information. Critical infrastructure. Hazardous materials. The uninterrupted flow of energy that keeps modern life moving. Here, you’ll work with cybersecurity experts on the forefront of threat protection and proactive prevention. In this fast-paced, real-world environment, you’ll draw on all your education and experience as well as the resources of Lockheed Martin to keep the threats at bay. THE WORK The scope of this effort encompasses tasks that provide USCYBERCOM with the sustained ability to fulfill its mission to direct, synchronize, and coordinate cyberspace planning and operations to...
Lockheed Martin
Jul 07, 2026
Cyber Policy and Strategy Planner Senior - Clearance Required
Lockheed Martin MD
Description: WHO WE ARE Lockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step up to one of today’s most daunting challenges: the use of advanced electronics to undermine our way of life. As a cyber security professional at Lockheed Martin, you’ll protect the networks that our citizens and the world depend upon each minute: Financial assets. Healthcare information. Critical infrastructure. Hazardous materials. The uninterrupted flow of energy that keeps modern life moving. Here, you’ll work with cybersecurity experts on the forefront of threat protection and proactive prevention. In this fast-paced, real-world environment, you’ll draw on all your education and experience as well as the resources of Lockheed Martin to keep the threats at bay. THE WORK The scope of this effort encompasses tasks that provide USCYBERCOM with the sustained ability to fulfill its mission to direct, synchronize, and coordinate cyberspace planning and operations to...
Lockheed Martin
Jul 07, 2026
Systems Engineer Senior - Clearance Required
Lockheed Martin MD
Description: Who We Are: Lockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step up to one of today’s most daunting challenges: the use of advanced electronics to undermine our way of life. As a cyber security professional at Lockheed Martin, you’ll protect the networks that our citizens and the world depend upon each minute: Financial assets. Healthcare information. Critical infrastructure. Hazardous materials. The uninterrupted flow of energy that keeps modern life moving. Here, you’ll work with cybersecurity experts on the forefront of threat protection and proactive prevention. In this fast-paced, real-world environment, you’ll draw on all your education and experience as well as the resources of Lockheed Martin to keep the threats at bay. THE WORK The scope of this effort encompasses tasks that provide USCYBERCOM with the sustained ability to fulfill its mission to direct, synchronize, and coordinate cyberspace planning and operations to...
Lockheed Martin
Jul 07, 2026
Systems Engineer Rapid Advanced Payload Test
Lockheed Martin Huntsville, AL
Description: 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. 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 resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. RAPT-2 Rapid Advanced Payload Test #2 The coolest job on this planet….or any...
Lockheed Martin
Jul 06, 2026
Software Engineer, Senior / Fayetteville, NC
Lockheed Martin NC
Description: Lockheed Martin’s SOF GLSS Team, the leading provider of a wide range of tailored logistics, maintenance and sustainment services is seeking a Software Engineer to join the SOF GLSS team in Fayetteville, NC. The candidate will perform classified duties supporting multiple Special Operations groups. What You Will Be Doing As the Software Engineer your responsibilities will include but are not limited to: • Plans, conducts, and coordinates MS SQL development activities. Designs, develops, documents, database architecture for new and existing software applications. • Applies the appropriate standards, processes, procedures, and tools throughout the development life cycle. • Applies knowledge of computer hardware and software, subject matter to be designed in business/mission applications, information processing techniques used. • Corrects program errors, prepares operating instructions, compiles documentation of program development, and analyzes system...
Lockheed Martin
Jul 03, 2026
Systems Engineer Sr - Integration & Test F35 - Level 3
Lockheed Martin Fort Worth, TX
Description: You will be the Systems Engineer Sr - Integration & Test F35 for the F-35 Test Operations which is responsible for responsible for System Integration and Testing for the F-35. This includes creating detailed test plans that include the scope of testing, different testing environments, lab infrastructure, schedules, and resource allocation. That stems from collaboration with software teams, architecture teams, design teams, and system test teams all working together to ensure F-35 modernization, sustainment, and development. What You Will Be Doing As the Systems Engineer Sr - Integration & Test F35 you will be responsible for coordinating test planning and execution across multiple domain teams to ensure successful system integration and testing of the F-35. Your responsibilities will include: Develop and maintain detailed test plans covering scope, environments, lab infrastructure, schedules, and resources. Coordinate with software,...
Lockheed Martin
Jul 03, 2026
Data Modernization System Engineer - Clearance Required
Lockheed Martin MD
Description: This position is participating in our External Referral Program . If you know somebody who may be a fit, click here to submit a referral. If your referral is hired, you'll receive a payment! code-extrefer Data Modernization System Engineer - Clearance Required WHAT WE'RE DOING • Join Lockheed Martin Rotary and Mission Systems, Cyber & Intelligence, where we foster innovation and integrity. • As a Data Modernization System Engineer, you'll be empowered to create "new realities" and pioneer solutions that break boundaries. • Benefit from the support of a global technology leader that values innovative thinking and provides the resources to turn ideas into reality. • Build on our proud legacy of achievement and contribute to shaping the future of aerospace, defense, and security solutions. THE WORK TKO provides systems engineering, software development, data science and cloud development and engineering services to the Cyber Infrastructure Solutions...
Lockheed Martin
Jul 03, 2026
Software Engineer with Poly SR SWE0
Lockheed Martin MD
Description: THE WORK This role fosters collaboration with senior engineers for the development of advanced data analytics solutions and agile development projects in support of a high-visibility mission. WHO WE ARE At Lockheed Martin, we're a leading aerospace and defense company that's shaping the future of cyber and intelligence. We're committed to innovating at the Edge: Harnessing the latest advancements in cyber, artificial intelligence, and machine learning to stay ahead of emerging threats and opportunities. WHO YOU ARE Experience as a Software Engineer with knowledge assisting in the design, development, testing, and debugging of software solutions, with a focus on Linux operating systems. Familiarity with programming languages such as Java. WHY JOIN US Providing ongoing training, mentorship, and development opportunities to help our cyber and intelligence professionals stay at the forefront of their field and achieve their career goals. Competitive and...
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