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101 senior software systems engineer jobs found

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Security Clearance senior software systems engineer
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General Dynamics Mission Systems, Inc
Apr 13, 2026
Systems Engineer – Entry Level
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Bachelor’s degree in Systems Engineering, or a related Science, Engineering or Mathematics field. Agile experience preferred.   CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Key Responsibilities: Support systems engineering activities for submarine combat system products, including requirements management and documentation Collaborate with multidisciplinary teams including hardware, software, and cyber-security engineers Assist with requirements traceability, design reviews, and technical communication to development teams Participate in agile team activities and help...
General Dynamics Mission Systems, Inc
Apr 13, 2026
CWL Deputy Chief Engineer (Sr Advanced Systems Engineer)
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 8+ years of job-related experience, or a Master's degree plus 6 years of job-related experience. Agile experience preferred.     CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is ontainable within a reasonable time from hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Duties and Responsibilities Coordinates requirements development, hardware/software design, verification, and validation activities Manages technical deliverables and coordinates technical review boards to review decisions with broad program...
General Dynamics Mission Systems, Inc
Apr 13, 2026
Lead Engineer - NGC Core (Sr Principal Systems Engineer)
General Dynamics Mission Systems, Inc Orlando, FL, USA
Basic Qualifications Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 10+ years of job-related experience, or a Master's degree plus 8 years of job-related experience. Agile experience preferred.     CLEARANCE REQUIREMENTS: Department of Defense TS/SCI security clearance is required at time of hire.  Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position ROLE AND POSITION OBJECTIVES:   Required 10+ years of experience in software-intensive program leadership, with demonstrated ability to lead large, multi-discipline technical teams Proven track record of delivering complex software programs on schedule...
Lockheed Martin
Apr 09, 2026
Software Engineer - Senior Level
Lockheed Martin MD, USA
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 analytics, novel...
SAIC
Apr 08, 2026
Systems Engineer SME
SAIC IL
Description SAIC is seeking a Systems Engineer for the Cloud team to support an IT Service Management effort for USTRANSCOM located at Scott Air Force Base (AFB) in Illinois. The USTC Managed Information Technology Services (MITS) contract is intended to provide strategic, technical, and program management guidance and support services to facilitate the operations and modernization of the combatant command's infrastructure, systems, and applications. This support will be provided to the USTC Command, Control, Communications & Cyber Systems Directorate (TCJ6). The successful candidate initiates, supervises, and/or develops requirements from a project's inception to conclusion for complex to extremely complex programs; Provides strategic advice, technical guidance and expertise to program and project staff; Provides detailed analysis, evaluation and recommendations for improvements, optimization development, and/or maintenance efforts for client-specific or mission critical...
SAIC
Apr 08, 2026
Network Engineer Senior
SAIC VA
Description Introduction Make a difference for national security by joining a team of dedicated IT professionals who will sustain, modernize and transform the enterprise IT capabilities for the Defense Counterintelligence and Security Agency (DCSA). The Air Force, Space and Intelligence Business Group (AFSI) of SAIC is seeking a Senior Network Engineer to support a transformational infrastructure program for DCSA. SAIC is proud to be supporting DCSA in safeguarding our nation's information. DCSA is the designated oversight authority on the accreditation of classified facilities, information systems, and the insider threat program. This involves security oversight of more than 10,000 companies and approximately 13,000 facilities involved in classified work throughout the DoD and 31 Federal agencies. Specifically, on the DCSA One IT program, SAIC will provide an enterprise IT solution that delivers highly secured and adaptable IT infrastructure, provides customer...
Lockheed Martin
Apr 07, 2026
DevSecOps Engineer, Sr. - Embedded, Grand Prairie, TX
Lockheed Martin Grand Prairie, TX, USA
Description: Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. Lockheed Martin Missiles and Fire Control (MFC) is one of four Lockheed Martin business areas. MFC is a recognized designer, developer and manufacturer of precision engagement aerospace and defense systems for the U.S. and allied militaries. MFC develops, manufactures and supports advanced products for military customers that include the U.S. Army, Navy, Air Force, Marine Corps, NASA and dozens of foreign allies. MFC also offers a wide range of products and services for the global civil nuclear power industry and the military’s green power initiatives. As a Senior Software Engineer at MFC, you will join one of the largest networks of software professionals, implementing cutting edge technologies...
Lockheed Martin
Apr 06, 2026
Radar Systems Engineer - Staff
Lockheed Martin Moorestown, NJ, USA
Description: What We’re Doing Here at Lockheed Martin Rotary and Mission Systems we take on the most demanding challenges in the world. We seek out innovative ideas and creative solutions to seemingly impossible problems facing our customers in the Sensors, Effectors & Mission Systems (SEMS) organization. We collaborate with the best Radar engineers in the business across the Moorestown, NJ and Syracuse, NY sites to invent solutions where they don’t exist yet. If you’re looking for the challenge of a lifetime on a team of the brightest minds in the world, then Rotary Mission Systems and the Sensor Architectures team is the place for you. If you’re looking for life-long learning and a career where the hard work is the fun part, then you’re in the right place. Lockheed Martin. Your Mission is Ours. The Work In your role as a Senior Radar Systems Engineer, you will: • Provide guidance and leadership for radar program execution. • Navigate major program milestones for...
General Dynamics Mission Systems, Inc
Apr 04, 2026
Senior Advanced Software Engineer
General Dynamics Mission Systems, Inc Scottsdale, AZ, USA
Basic Qualifications Requires a Bachelor’s degree in Software Engineering, or a related Science, Engineering or Mathematics field. Also requires 8+ years of job-related experience, or a Master's degree plus 6 years of job-related experience. Agile experience preferred.   CLEARANCE REQUIREMENTS:   Department of Defense   TS/SCI security clearance with Full Scope Polygraph  is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position ROLE AND POSITION OBJECTIVES: As a Systems Network Engineer for Satellite Ground Systems, you’ll be a member of a cross functional team.    We encourage you to apply if you have any of these preferred skills or experiences:...
Lockheed Martin
Apr 03, 2026
Cyber Systems Security Engineer - Level 4
Lockheed Martin Marietta, GA, USA
Description: Lockheed Martin Aeronautics. Be More Than You Can Imagine. At Lockheed Martin Aeronautics, we're taking innovation to the next level. From designing the most advanced air vehicle to designing aircraft that defies gravity, our engineers live on the cutting edge of technology. Never have the opportunities for a technical career been so limitless. The Cyber System Security Engineer candidate is responsible for ensuring that cyber security requirements are properly defined, decomposed, allocated, implemented, and assessed to produce a cyber-resilient security design solution for the target platform (Air System or Weapon System). This includes participating in working groups, design reviews, and formal artifact reviews alongside other Subject Matter Experts (SMEs) within the overall platform; and providing security expertise to ensure that cyber security is considered early in the product development lifecycle. Applicant is expected to conduct a range of cyber risk...
Lockheed Martin
Apr 03, 2026
Integration & Test Engineer
Lockheed Martin Moorestown, NJ, USA
Description: WHAT WE'RE DOING The candidate will perform the unit level test, element integration and test, and support system level testing of COTS or custom computing hardware and real-time embedded signal processing firmware/software applications, including engineering/technical evaluations, equipment functional checks, and troubleshooting, test, and analysis. THE WORK This engineer will work with domain experts and military documentation to develop test software requirements, procedures, code and execute the tests. WHO YOU ARE The candidate must have excellent organizational skills, interpersonal skills and be able to communicate at both programmatic and technical levels with subordinates, peers, senior management levels and the customer. Basic Qualifications: - BS Degree in Electrical Engineering, Computer Engineering, Computer Science, or equivalent Technical Degree - Minimum of 2 year of professional level experience. - Experience in testing systems for...
General Dynamics Mission Systems, Inc
Apr 03, 2026
Linux Integration and Test Engineer
General Dynamics Mission Systems, Inc San Antonio, TX, USA
Basic Qualifications Bachelor’s degree in a specialized area; or equivalent is required plus a minimum of 2 years of relevant experience; or Master's degree. CLEARANCE REQUIREMENTS: Department of Defense TS/SCI security clearance is required at time of hire. Must be able to obtain Polygraph. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Job Opportunity: Linux Integration and Test Engineer at General Dynamics Mission Systems Position Overview: Join our team to help create mission-critical systems that keep people safe. As a Linux Integration and Test Engineer, you'll play a crucial role in configuring, troubleshooting, and ensuring the seamless integration of various hardware and software...
Lockheed Martin
Apr 02, 2026
Cyber Systems Security Engineer Staff
Lockheed Martin Fort Worth, TX, USA
Description: You will be the Cyber Systems Security Engineer Staff for the Integrated Fighter Group (IFG) – F‑22 CNI Crypto Team which is responsible for leading the development, integration, and sustainment of cryptographic hardware across the F‑22 platform. What You Will Be Doing As the Cyber Systems Security Engineer Staff you will be responsible for driving the end‑to‑end engineering of the F‑22 CNI Crypto portfolio. You will work closely with CNI, Racks, DHM, CM, DM, NSA, and F‑22 SPO partners to ensure secure, certified solutions that meet mission requirements. Your responsibilities will include: Lead engineering development and integration of the full F‑22 CNI Crypto hardware suite. Provide technical training and SME oversight for existing and planned cryptographic systems. Represent the F‑22 CNI team with Lockheed Martin management, NSA, and customer counterparts. Approve technical inputs for proposals, basis‑of‑estimate (BoE) documents, and...
Lockheed Martin
Apr 02, 2026
F-35 Field Support Engineer, F-35 Program-MCAS Cherry Point, Level 4
Lockheed Martin Havelock, NC, USA
Description: Join the Lockheed Martin Aeronautics company as an Aircraft Field Service Engineer (FSE) on our Aeronautics Field Sustainment (AFS) team! Our team is responsible for supporting the F-35 Program at our Marine Corp Air Station (MCAS) Cherry Point, North Carolina location. What You Will Be Doing As a Nose to Tail (NTT) FSE, the preferred candidate will be a subject Matter Expert (SME) in Avionics/Mission Systems (MS), APG/Vehicle Systems (VS) or Supportable Low Observable (SLO)/Structures. While also being an emerging authority in the other two disciplines that they are not a SME in. The NTT FSE will possess the skill set to accomplish advanced troubleshooting and analysis of MS, VS, or SLO. The candidate will act as part of the Lockheed Martin Aeronautics Field Sustainment (AFS) technical interface to the on-site Customer (both Operations and Maintenance) in resolving issues arising from maintenance and modification activities for all matters dealing with the F-35...
Lockheed Martin
Apr 02, 2026
Network Engineer III (Secret Clearance)
Lockheed Martin Colorado Springs, CO, USA
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 You will support the implementation, maintenance, and troubleshooting of Lockheed Martin’s enterprise network infrastructure for the C2BMC program. Your day‑to‑day duties include configuring and maintaining routers, switches, and firewalls (Cisco, Juniper, Fortinet, Palo Alto), monitoring LAN/WAN performance, and resolving connectivity, latency, and...
SAIC
Apr 01, 2026
NASA Mission System Security Risk Assessment Engineer
SAIC WV
Description Description: SAIC is seeking a Senior System Security Engineer (SSE) with extensive space mission and systems domain knowledge to join the NASA Independent Verification and Validation (IV&V) Mission Protection Services (MPS) team and support Mission System Security Risk Assessments (MSSRA) efforts. The Senior SSE will lead system-level security analyses and assessments used to evaluate mission risks across complex spacecraft architectures and operational environments. In this role, the Senior SSE will work closely with the customer and peers to oversee activities analyzing spacecraft architectures, interfaces, and operational behaviors to identify and roll up mission-level vulnerabilities and security risks that arise from system interactions, timing dependencies, and integrated mission environments. The position also supports planning, coordination, and analysis activities across multiple mission protection domains, skills, and efforts. The Senior...
SAIC
Apr 01, 2026
NASA System Security Vulnerability Engineer
SAIC WV
Description Description: SAIC is seeking a Senior System Security Engineer (SSE) to join the NASA Independent Verification and Validation (IV&V) Mission Protection Services (MPS) team and support simulation-based cybersecurity analysis of spacecraft computer systems and mission environments. The Senior SSE will guide the development and execution of models and simulations used to identify and analyze hardware and software vulnerabilities across integrated space system architectures. The Senior SSE experience with spacecraft software and hardware will be utilized to identify and prioritize potentially vulnerable components. Working alongside a Junior Computer Engineer / Software Developer and a senior Computer/Software Engineer, the Senior SSE will identify and investigate hardware and software system components, interfaces, interactions, attack surfaces, and vulnerabilities through modeling, simulation development, and test case execution. This role will also provide...
SAIC
Apr 01, 2026
Senior Data Engineer
SAIC CA
Description SAIC is seeking a Senior Data Engineer with an Active TS/SCI clearance in support of NAVWAR's Naval Operational Architecture (NOA) program . The Senior Data Engineer will to support a transformational, Navy-led network-centric initiative that converges existing systems, automating the correlation of multiple ISR data streams, dramatically reducing the "sensor-to-shooter" timeline. This is a recently awarded contract, funded for five years. Work is performed ON-SITE and we are looking to hire in either one of the following locations listed below and you must be local to one of them: San Diego, CA Charleston, SC Monterey, CA Washington Liason Office and Pentagon Fort Carson, CO Colorado Springs, CO Denver, CO There will be up to 15% of travel required for this role. Please view our program page for more information and to view all open positions available: company website JOB DUTIES: Collaborate with cross-functional teams to...
SAIC
Apr 01, 2026
Senior Virtual Desktop Engineer
SAIC VA
Description Introduction Make a difference for national security by joining a team of dedicated IT professionals who will sustain, modernize and transform the enterprise IT capabilities of the Defense Counterintelligence and Security Agency (DCSA). The Air Force Space and Intel Business Group of SAIC is seeking a Senior Virtual Desktop Engineer to support a transformational infrastructure program for DCSA. SAIC is proud to be supporting DCSA in safeguarding our nation's information. DCSA is the designated oversight authority on the accreditation of classified facilities, information systems, and the insider threat program. This involves security oversight of more than 10,000 companies and approximately 13,000 facilities involved in classified work throughout the DoD and 31 Federal agencies. Specifically, on the DCSA One IT program, SAIC will provide an enterprise IT solution that delivers highly secured and adaptable IT infrastructure, provides customer support, and...
SAIC
Apr 01, 2026
Senior Field Engineer
SAIC AL
Description SAIC is seeking a Senior Field Service Engineer to support S3I at Redstone Arsenal in Huntsville, AL . The candidate must have military logistics, military hardware maintenance, and military system experience. The Senior Field Service Engineer will provide on-site logistics and hardware services and technical support to S3I as part of a project team focusing on the engineering, development, and integration of software and hardware for PAE Fires on multiple system platforms. Duties: Shall work with teammates on logistics, hardware, and software to create Fires capabilities for multiple DoD and other Government agencies Shall be required to travel and participate in various events and demonstrations Qualifications Education: Bachelor's degree from an accredited college/university in engineering, science, or related field and fourteen (14) years related experience; Additional six (6) years' experience can be considered in lieu of...
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