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84 senior systems engineer level 3 jobs found

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Security Clearance senior systems engineer level 3
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Lockheed Martin
Mar 14, 2026
Embedded Systems Security Engineer, Senior - Level 3
Lockheed Martin Orlando, FL
Description: You will be a Cyber Systems Security EMBEDDED Engineer in the Program Protection Organization. Our organization oversees all aspects of Anti-Tamper and embedded Cybersecurity across Missiles and Fire Control. We are chartered with providing the skills and innovative technologies to develop, design, produce and sustain secure products across our Lines of Business. What You Will Be Doing As the Cyber Systems Security Engineer you will be responsible for providing embedded System Security Engineering design and implementation in all aspects of System Security Engineering (SSE) process in development of Department of Defense (DoD) Weapon Systems. Your responsibilities will include: • Assessing and mitigating System Security threats/risks throughout the embedded Weapon System development life cycle. • Validating System Security Engineering requirements decomposition, allocation and analysis for embedded Weapon Systems. • Implementing System Security Engineering...
Lockheed Martin
Jun 09, 2026
Cyber Software Engineer- Early Career
Lockheed Martin Littleton, CO
Description: 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. This is a place for engineers, scientists, and problem-solvers who are ready to engage deeply, think critically, and build with purpose. You will not just launch a career. You will be part of something bigger. This is where the best are built. The Cyber Software Engineer Associate role is an entry‑level position focused towards recent graduates or early career professionals eager to begin applying cybersecurity principles within a fast‑moving cyber engineering environment. In this position you will work under...
Lockheed Martin
Jun 09, 2026
Electro-Optical Engineer Senior Stf - Directed Energy
Lockheed Martin Owego, NY
Description: WHAT WE’RE DOING At Lockheed Martin Rotary and Mission Systems Business Area, our portfolio features more than 1,000 programs, including helicopters, integrated air and missile defense, littoral warfare, undersea warfare, radar, electronic warfare, cyber solutions, C4ISR, and training and logistics systems. The business area supports the U.S. Air Force, U.S. Army, U.S. Coast Guard, U.S. Marine Corps, U.S. Navy and Missile Defense Agency, as well as intelligence, civil, commercial and international military customers. WHO WE ARE Lockheed Martin: An Award-Winning Place to Work THE WORK We are seeking an experienced electro-optical engineer to support the optimization and performance of high energy laser assemblies for full rate manufacturing. The successful candidate will oversee a team of engineers and technicians providing technical expertise and guidance. In this role, you will help guide the standup of optimized fabrication and testing, help validate...
Lockheed Martin
Jun 09, 2026
Cybersecurity Anti-Tamper Senior Engineer
Lockheed Martin Moorestown, NJ
Description: WHAT WE’RE DOING At Lockheed Martin Rotary and Mission Systems, we're on a mission to drive innovation and uphold the highest standards of business ethics. We believe that by pushing the boundaries of visionary thinking, we can achieve exceptional results. As a Lockheed Martin employee, you'll have the opportunity to make a meaningful impact while working in an environment that values integrity and excellence. THE WORK The Cyber Systems Security Engineering team in Moorestown, NJ is seeking a senior Electrical or Computer Engineer to design, develop, and sustain hardware based anti tamper solutions that safeguard critical military technology. You will work closely with cross functional engineers, program managers, and customers to ensure security requirements are met and to evaluate emerging threat vectors. In this role you will: • Develop and implement hardware anti tamper architectures that protect mission critical systems. • Verify system design requirements and...
SAIC
Jun 08, 2026
Radar RF Signals Modeling and Simulation Engineer
SAIC VA
Description SAIC has a funded need for a Radar RF Signals Modeling and Simulation Engineer (Space Systems) to support an expanding Government Intelligence Community (IC) customer within the National Reconnaissance Office (NRO) in Chantilly, VA. This position offers a flexible work schedule , with core collaboration hours from 10:00 a.m. - 3:00 p.m. , allowing you to balance mission demands with personal flexibility while still engaging deeply with a world-class engineering team. Clearance Requirements: Top Secret/SCI with the ability to obtain a Poly. (Note: The current Security Clearance must be held by an IC Customer.) Role Overview As a senior technical contributor, you will analyze and design high--fidelity ground-based radar RF signal models of great importance to the NRO. Your modeling and simulation products will inform spacecraft and sensor design, mission planning, and system-of-systems behavior. Some work will also require modeling and...
Lockheed Martin
Jun 04, 2026
Aircraft Field Support Engineer Staff, F-35 (Komatsu, Japan) - Level 4
Lockheed Martin Fort Worth, TX
Description: Join the Lockheed Martin Aeronautics Company as an Aircraft Field Service Engineer (FSE) on our Aeronautics Field Sustainment team! This position will support the JASDAF Base Komatsu, in Japan! As a Nose to Tail (NTT) FSE, the preferred candidate will be a subject Matter Expert(SME) in APG/Vehicle Systems (VS). It is desired the individual also be an emerging authority in Supportable Low Observable (SLO)/Structures and Avionics/Mission Systems (MS), with the skill set to accomplish troubleshooting and analysis of VS, MS, or SLO. The candidate will act as part of the Lockheed Martin Aeronautics Field Sustainment Team's 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 aircraft. What You Will Be Doing Responsibilities include: •Accomplish troubleshooting and analysis of difficulties experienced in the field. • Attend debriefings,...
Lockheed Martin
Jun 04, 2026
Dev Sec Ops Engineer TS/SCI
Lockheed Martin King of Prussia, PA
Description: What We’re Doing: At Lockheed Martin, we believe that by applying the highest standards of business ethics and forward-thinking, everything is within our reach – and yours as a Lockheed Martin employee. We value your unique skills and expertise, and we aim to give back continuously by offering a wide variety of benefits and amenities to help our employees live flexible, balanced, and fulfilling lives at, and outside of, work. Who you are: The RMS division is seeking an experienced Systems/Project Engineer to manage and oversee the program’s cyber related activities across multiple authorization boundaries. In this role, the selected candidate will ensure that compliance standards applied to information systems are achieved consistently while maintaining schedule. The Work: • Communicate routinely with the Security Controls Assessor (SCA) to gather feedback and exchange information related to program performance as it pertains to Risk Management Framework (RMF)...
Lockheed Martin
Jun 04, 2026
Systems Engineer Stf - Clearance Required
Lockheed Martin Colorado Springs, CO
Description: WHAT WE'RE DOING Lockheed Martin is on the front line of global security, operating, maintaining, and sustaining an Integrated Air and Missile Defense system for a key U.S. international defense partner. In this mission‑critical role we assure 24/7 system readiness, enabling our ally to protect its airspace, safeguard lives, and maintain regional stability. THE WORK As a Network Engineer on this program you will: • Deploy, configure, and maintain routers, switches, firewalls, and network gear in deployable communication kits. • Monitor LAN/WAN performance, troubleshoot connectivity, latency, and packet‑loss issues, and provide on‑call support for critical events. • Implement core networking technologies (VLANs, OSPF, BGP, GRE tunnels, multicast) and contribute to design reviews, upgrades, and project deployments. • Work closely with other engineers to craft network architectures and execute field installations, which may include travel to remote sites and...
Lockheed Martin
Jun 02, 2026
Sustainment Engineer Sr.
Lockheed Martin Orlando, FL
Description: You will be the Senior Sustainment Engineer supporting the development, qualification, and lifecycle sustainment of specialized shipping and storage containers and support equipment. Our team is responsible for ensuring mission-critical hardware can be safely transported, stored, operated, maintained, and supported throughout the product lifecycle. What You Will Be Doing As the Senior Sustainment Engineer, you will manage the development and qualification of specialized shipping and storage containers and support equipment. You’ll work closely with engineering teams, suppliers, program stakeholders, and customers to ensure support equipment solutions meet technical, operational, environmental, maintainability, and contractual requirements. Your responsibilities will include: • Managing the development and qualification of specialized shipping and storage containers and support equipment. • Developing, revising, and executing detailed requirements documents,...
Lockheed Martin
Jun 02, 2026
Sustainment Engineer Sr.
Lockheed Martin Orlando, FL
Description: You will be the Senior Sustainment Engineer supporting life cycle cost estimating, affordability analysis, and sustainment strategy development. Our team is responsible for ensuring systems remain affordable, supportable, and operationally effective throughout their entire lifecycle by developing logistics solutions, evaluating sustainment costs, and identifying opportunities to improve long-term support outcomes. What You Will Be Doing As the Senior Sustainment Engineer, you will serve as the sustainment, life cycle cost, operations and support, and affordability engineer responsible for supporting the development and execution of sustainment and logistics support strategies. You’ll play a critical role in evaluating the affordability and effectiveness of system support solutions from development through fielding, operations, maintenance, and long-term depot sustainment. Your responsibilities will include: • Performing logistics analysis, including level of repair...
Lockheed Martin
May 29, 2026
Embedded Senior Software Engineer / Embedded / C++ / Orlando, FL
Lockheed Martin Orlando, FL
Description: This is a multi-hire position for a variety of highly embedded and sensor driven programs. These programs are notable programs such as JASSM, LRASM, EOTS and many more classified programs that are in need of engineers with experience writing drivers, working in hardware abstraction layer architectures and are familiar with microservice style architectures. We want you, if you enjoy writing command and control code for sensors and doing hardware software integration in classified labs. This position is responsible for all phases of the software development lifecycle including requirements analysis, design, code and unit test, and hardware/software integration and verification. The individual will develop embedded software in C++ and embedded operating system in an Agile environment using JIRA, Git and Confluence. The individual will need to apply appropriate standards, processes, procedures and tools throughout the development lifecycle. Lockheed Martin is a...
Lockheed Martin
May 29, 2026
Electro-Optical Sr Engineer -Orlando
Lockheed Martin Orlando, FL
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. At Lockheed Martin, we apply our passion for purposeful innovation to keep people safe and solve the world's most complex challenges. We are seeking an Electro-Optical (EO) Engineer who is passionate about EO and can apply technical skills to develop optimized solutions for complex challenges. What You Will Be Doing Your skill set should include physics-based modeling, FLIR characterizations, image processing and/or algorithm development. The EO Engineer must understand the sensitivities associated with the various parts of the imaging chain to quickly and effectively perform system design trades. Must be willing to increase technical depth and breadth in EO as a path towards becoming a...
Lockheed Martin
May 29, 2026
UI / Mission Planning Software Engineer, Senior / C++ - Orlando, FL
Lockheed Martin Orlando, FL
Description: You will be a Senior Software Engineer on our team at Lockheed Martin. 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. What You Will Be Doing The role will require and focus on building...
Lockheed Martin
May 29, 2026
Network Engineer Staff (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 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...
Lockheed Martin
May 28, 2026
EOTS Software Engineer - Senior / Embedded / C++ - Orlando, FL
Lockheed Martin Orlando, FL
Description: You will be a Senior Software Engineer on our EOTS team at Lockheed Martin. The Electro-Optical Targeting System (EOTS) is the world’s first sensor that combines forward-looking infrared (FLIR) and infrared search and track (IRST) functionality. 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...
Lockheed Martin
May 23, 2026
1LMX DevSecOps, Senior / C++ - Orlando, FL
Lockheed Martin Orlando, FL
Description: Lockheed Martin’s Software Factory, a leader in DevSecOps-driven software engineering serving the aerospace and defense sectors. The Lockheed Martin Software Factory delivers customized solutions to meet the needs of our diverse customers — from commercial to classified — in order to scale across multiple programs. Embedding (Development, Security and Operations) DevSecOps in every step of our software development keeps our clients at the cutting edge of cybersecurity. Secure coding is a fundamental principle behind our DevOps philosophy to make sure the best cyber security practices are considered at every step of development. We are focused on architecting software for frequent delivery. Modular open systems architecture has been key to our systems for many years, and we are using new technologies such as container orchestration with Kubernetes to drive modularity through containerized microservice architecture all the way into the deployed system. Not only does...
Lockheed Martin
May 23, 2026
Systems Engineer
Lockheed Martin King of Prussia, PA
Description: WHAT WE'RE DOING Want to work with cutting-edge technologies in a fun, fast-paced, and dynamic environment? Are you a problem solver that takes on challenges that others think are impossible? If you answered yes to these questions, then we invite you to join Lockheed Martin Rotary and Missions Systems (RMS) as a Systems Engineer! Lockheed Martin is a global leader in aerospace, defense, and technology solutions. You will be joining Lockheed Martin Rotary and Mission Systems supporting the Tactical Tomahawk Weapons Control System (TTWCS) program in Valley Forge, PA. THE WORK We are in search of an experienced Systems Engineer to join our team. As an Engineering Professional on the TTWCS program, you will perform system engineering efforts leading change packages to the existing software system, performing requirements development, interface design, system architecture, and aid in the design and development of future systems. The work location will be in...
Lockheed Martin
May 23, 2026
JASSM Mission Planning Software Engineer, Senior / C++ - Orlando, FL
Lockheed Martin Orlando, FL
Description: You will be a Mission Planning Senior Software Engineer on our team at Lockheed Martin. 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. What You Will Be Doing The role will require and focus...
Lockheed Martin
May 23, 2026
DevSecOps Engineer, Senior (Active TS/SCI)
Lockheed Martin King of Prussia, PA
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. Are you a Senior DevSecOps Engineer for something different? In this role you will: +...
Lockheed Martin
May 15, 2026
Physics Modeling Systems Engineer, Sr
Lockheed Martin Mount Laurel Township, NJ
Description: What We're Doing 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. The Work We are seeking an experienced Senior Systems Engineer to support multiple Rotary and Mission Systems (RMS) programs and participate in all phases of the systems engineering process (system design, requirements development, modeling and simulation and test). The engineer will leverage RMS systems engineering processes and procedures while performing their respective engineering and verification activities. In this important role, you will collaborate in an Agile environment with other engineering disciplines and program personnel. A desire to learn and adopt emerging technologies and tools will be key to success in this role. The core responsibilities of this role will be: •...
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