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13 senior security engineer jobs found

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Onsite senior security engineer MD
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SAIC
Oct 21, 2026
Cloud Computing Engineer Sr Principal
SAIC MD
Description SAIC is seeking a Cloud Computing Engineer to serve as a senior DevSecOps engineer supporting mission systems operating in DoD IL5 and higher environments. This role will lead the design, implementation, and sustainment of secure, automated software delivery pipelines and cloud infrastructure for critical national security customers, with a focus on AWS services (including AppStream 2.0) and integration with Keycloak. The Cloud Engineer acts as a technical leader and subject matter expert, partnering with government stakeholders, solution architects, cyber, and development teams to deliver scalable, resilient, and compliant AWS solutions in development, test, and production environments. Key Responsibilities include: serve as the senior DevSecOps/Cloud engineer for AWS-based solutions in IL5+ and classified environments. Define cloud-native architectures, deployment patterns, and CI/CD strategies aligned with customer mission, DoD Cloud Computing SRG, and RMF...
SAIC
Oct 14, 2026
Senior Field Software Test Engineer
SAIC MD
Description SAIC is seeking a Senior Field Software Test Engineer with strong experience performing software acceptance, integration, and regression testing, as well as configuration management. The candidate will take a key role in expanding the scale and accelerate the pace of our research, development, test and evaluation (RDT&E) supporting national security client projects at our facility in Upper Marlboro, MD and at other locations within the continental US. This role offers the opportunity to work with multi-disciplinary teams of engineers, data scientists, and AI scientists and contribute to innovative technology development and experimentation. Responsibilities: Coordinate with software engineering teams to configure, deploy, and test applications and microservices on on-premises infrastructure and on cloud platforms. Develop and maintain configuration documentation and software test plans. Perform and document tests of APIs and microservices,...
QED Systems, LLC
Oct 12, 2026
Senior Systems Engineer, Network Architect
QED Systems, LLC MD
QED Systems, LLC, is currently recruiting a Senior Systems Engineer, Network Architect to join our team at APG, MD to support our customer, Project Manager Intelligence Systems & Analytics (PM IS&A). The ideal candidate will be responsible for designing, analyzing, and optimizing the network infrastructure supporting Army Intelligence systems. This role is responsible for creating comprehensive architectural documentation, diagnosing network performance issues, and engineering robust solutions to ensure uninterrupted, high-speed data flow across the Department of Defense Information Network (DODIN-A) and intelligence networks. Duties: Architecture Documentation: Map, document, and maintain accurate "As-Is" and "To-Be" network architectures for Army Intel systems. Ensure all technical and operational viewpoints strictly comply with the Department of Defense Architecture Framework (DoDAF) and Enterprise Architecture (EA) standards. Bottleneck Identification &...
SAIC
Oct 07, 2026
Cloud Software Engineer
SAIC MD
Description SAIC's is seeking a Cloud Software Engineer with strong development experience to contribute to designing, building, and maintaining modern, cloud-native applications and tools that will expand the scale and accelerate the pace of our research, development, test and evaluation (RDT&E) supporting national security clients. This role offers the opportunity to work with multi-disciplinary teams of engineers, data scientists, and AI scientists and contribute to innovative technology development and experimentation. Hybrid: 3 days onsite / 2 days remote Responsibilities: Collaborate with senior software engineers to develop and deploy cloud-native applications and microservices on the Amazon Web Services (AWS) cloud platform. Maintain well documented, formatted, and version controlled code and participate in code review. Develop custom APIs and microservices, including containerization, where appropriate. Create code to process data stored in...
SAIC
Sep 30, 2026
SDWAN Network Engineer
SAIC MD
Description The SAIC Vanguard 2025 Program currently has an opening for a Senior Network Engineer supporting the Dept. of State (DoS) Diplomatic Technology (DT) Network Operations (NO) division. This position primarily supports operations and maintenance of foreign post network integrations with the DoS Core and other network integrations comprising a large and complex network infrastructure and cloud environments, with engineering and design responsibilities as warranted. This program provides transparent, interconnected systems and security supporting the DoS in successfully carrying out its U.S. foreign policy mission. DT provides enterprise architecture design, engineering, operations and maintenance support services for desktops, servers, networks, firewalls, cloud infrastructure, and enterprise applications across the Department. The SAIC Vanguard 2025 Program provides comprehensive IT support consisting of the Department's servers, network devices, network perimeter...
SAIC
Sep 30, 2026
Systems Integration Lead Senior Systems Engineer
SAIC MD
Description SAIC is seeking an experienced and highly skilled Integration Lead to join our team supporting unique complex IT and SIGINT solutions. In this leadership role, you will serve as the primary requirements and the systems, applications, and architectures designed to meet them. You will lead a cross-functional integration and engineering team, drive integration and migration planning, and serve as the ultimate advocate for client mission success. This position may require on-site support at customer locations and will directly support ISR and C4ISR programs. Work Environment This is a senior, integration-based leadership role that requires onsite leadership at SAIC and customer sites on Aberdeen Proving Grounds, MD. The Integration Lead will operate at the intersection of technical execution and strategic client engagement, working collaboratively and directly with the SAIC Chief engineer. This is an ideal opportunity for a seasoned professional who thrives in...
Lockheed Martin
Aug 18, 2026
Software Engineer with Poly SR SWE0
Lockheed Martin MD
Standard Job Description THE WORK This junior 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...
Lockheed Martin
Aug 18, 2026
Data Modernization System Engineer - Clearance Required
Lockheed Martin MD
Standard Job Description 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 customer. The services enable the Data Transformation, Malware Analysis, and Cyber Threat Intelligence processing and sharing capabilities for the customer, fulfilling mission objectives and offering actionable information to detect and mitigate cyber...
Lockheed Martin
Aug 18, 2026
Windows & Linux Systems Administrator Staff
Lockheed Martin MD
Standard Job Description WHAT WE'RE DOING: Lockheed Martin, Cyber & Intelligence invites you to step up to one of today’s most daunting challenges: the evolving threat of cyber warfare. As a cyber security professional at Lockheed Martin, you’ll protect the networks that our citizens and the world depend upon each minute. 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 GG System Administrator is a senior level role that blends enterprise system administration (Linux & Windows) with full cycle network engineering, including design, deployment, and support of Arista as well as other vendor platforms. The incumbent will drive automation, security, and DevOps best practices while delivering resilient, high performance infrastructure...
Lockheed Martin
Aug 18, 2026
Cyber RF Software Engineer, Senior
Lockheed Martin MD
Standard Job Description WHAT WE'RE DOING 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. WHO WE ARE We're revolutionizing the world of cyber with our cutting-edge program! As a key player on our team, you'll have the opportunity to contribute to the entire lifecycle...
Lockheed Martin
Aug 18, 2026
Cyber RF Software Engineer Staff
Lockheed Martin MD
Standard Job Description WHAT WE'RE DOING 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. WHO WE ARE We're revolutionizing the world of cyber with our cutting-edge program! As a key player on our team, you'll have the opportunity to contribute to the entire lifecycle of our...
Lockheed Martin
Aug 18, 2026
Software Engineer
Lockheed Martin MD
Standard Job Description WHAT WE'RE DOING 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 As a Software Engineer - Senior Level you will be responsible for: • Developing, maintaining, and enhancing complex and diverse software systems (e.g., processing-intensive...
SAIC
Oct 07, 2026
Engineering Technician III
SAIC MD
Description SAIC is seeking an Engineering Technician to support NAVAIR PMA-209 Tactical Communications (TACCOM) / ARC-210 Radio with legacy and state-of-the-art Mobile User Objective System (MUOS) Satellite Communications engineering activities. Supports systems engineers with acquisition/procurement package development. Tasking includes conducting systems test plans and developing system test reports. The candidate will provide integration support for the ARC-210 radios on airborne platforms. Work will be performed client-site at NAS Patuxent River and in the SAIC office in California, MD. Job Duties: -Provide systems engineering and integration support to both the Secure Communications integration and the TACCOM development teams. -Represent the PMA209 TACCOM team at various meetings/events where the candidate must have excellent communication & organizational skills in addition to an ability work well with others in a demanding environment. -Support the secure...
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