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229 senior software engineer level 3 jobs found

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Lockheed Martin
Mar 17, 2026
Software Engineer Senior - Level 3
Lockheed Martin Fort Worth, TX, USA
Description: You will be the Senior Software Engineer for the team which is responsible for the development and delivery of software models with the ability to make independent and solid decisions during the software development process. What You Will Be Doing As the Senior Software Engineer you will be responsible for leading the design, development, and delivery of high‑quality software solutions in a lab environment. You will mentor junior engineers, drive architectural decisions, and collaborate closely with cross‑functional teams to ship reliable, scalable, and high‑performing products. Your responsibilities will include: Lead design and development of software solutions. Mentor junior engineers and foster technical growth. Drive architectural decisions and enforce best practices. Collaborate with cross‑functional teams to ensure reliability and scalability. Oversee delivery, testing, and performance optimization of products. What’s In It...
Lockheed Martin
Feb 19, 2026
Senior Software Systems Engineer - Level 3
Lockheed Martin King of Prussia, PA, USA
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 re-imagining 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. The Software Systems Engineer will use Model-Based Systems Engineering (MBSE)...
Lockheed Martin
Mar 20, 2026
Lead Electrical Power Engineer (Lead MBR Eng. Staff)
Lockheed Martin Moorestown, NJ, USA
Description: What We're Doing Lockheed Martin is shaping the future of defense through cutting edge radar and missile defense technologies, and we want you to help write the next chapter. As the premier developer of active electronically scanned array (AESA) radars and integrated air and missile defense solutions for the U.S. military, our allies, and more than 45 nations worldwide, we deliver world class situational awareness, early warning, and kill assessment capabilities in the most demanding environments. Join a global team of 35 000 engineers, software developers, and cyber experts who turn complex challenges into reliable, next generation systems that keep warfighters ahead of emerging threats. Your talent will power everything from space domain awareness to ground based radar testbeds, ensuring the safety of today’s forces and the security of tomorrow’s world. The Work Successful can will: The Level 4 Power Systems Engineer is a senior technical contributor...
Lockheed Martin
Mar 20, 2026
System Engineer, Safety Sr - Level 3
Lockheed Martin Fort Worth, TX, USA
Description: You will be the System Safety Engineer for the System Safety Engineering Team which is responsible for ensuring the safety and mission success of the F‑22 aircraft. What You Will Be Doing As the System Safety Engineer you will be responsible for leading safety analyses and supporting the System Safety Program Plan throughout the aircraft development lifecycle. Your responsibilities will include: Conduct Functional Hazard Analysis, Fault Tree Analysis, Preliminary Hazard Analysis, System Safety Analysis, and Software Hazard Analysis. Develop, maintain, and execute the System Safety Program Plan. Perform quantitative and qualitative risk assessments and trade studies to optimize design choices and recommend controls. Coordinate system safety activities with design teams, suppliers, internal management, and external customers. Provide technical guidance on hazard mitigation and collaborate with adjacent disciplines to support program...
Lockheed Martin
Mar 20, 2026
Systems Engineer Stf
Lockheed Martin Andover, MA, USA
Description: You will be the Systems Engineer for the PAC 3 program at Lockheed Martin Missiles & Fire Control in Chelmsford/Andover, MA. Our team designs, develops and sustains precision engagement missile systems for the U.S. and allied forces, and we are expanding to meet increasing mission demands.. What You Will Be Doing As the Systems Engineer, you will provide technical guidance and day to day leadership for the PAC 3 systems engineering workforce. You will shape requirements, architecture and verification strategies, mentor junior engineers and ensure that all subsystems integrate smoothly into a fully functional missile solution. Your responsibilities will include: • Defining and managing system level requirements, traceability matrices and baseline documentation. • Leading functional and physical architecture development, performing trade studies and recommending optimal design solutions. • Guiding verification and validation planning, including test readiness...
Lockheed Martin
Mar 20, 2026
Software Engineering Staff - Level 4
Lockheed Martin Fort Worth, TX, USA
Description: We are Lockheed Martin Lockheed Martin is seeking a highly experienced Software Engineer to design, develop, and implement a modern software framework for the F-35 Ground Systems Mission Planning Environment (MPE) project. The MPE is a critical component of the F-35 program, enabling all ground-based operations and playing a vital role in the successful execution of missions and overall operation of the aircraft. As a Senior member of the F-35 Ground Systems MPE Software team, the successful candidate will be responsible for guiding a team of Software Engineers in the design and development of a new contract aimed at modernizing the Mission Planning product and tools. This Senior role requires a deep understanding of software architecture, technical vision, and the ability to drive the successful implementation of this complex project. Who You Are The successful candidate will assume a technical senior software role, responsible for leading the software...
Lockheed Martin
Mar 20, 2026
Engineering Project Manager Principal - Level 6
Lockheed Martin Marietta, GA, USA
Description: We are Lockheed Martin We are seeking a highly experienced Principal Project Engineer to lead and manage C130 new development and modernization efforts. You will function as part of the AMMM Project Engineering team responsible for delivering complex system development products and solutions. What You Will Be Doing As a Principal Project Engineer Manager your responsibilities will include: • Be the technical leader solving new development opportunities or modernized solutions of an integrated and complex system/technical development from concept, through design, implementation, test, manufacturing/deployment and sustainment. • Ensure alignment with Engineering and Technology strategy, business development, program architect, technical feasibility. • Drive planning, technical performance measures, trade studies, risk evaluations, across all Engineering Teams to meet contract cost, schedule, and technical requirements. Lead and manage engineering teams to...
Lockheed Martin
Mar 20, 2026
Project Engineer - Level 3
Lockheed Martin Fort Worth, TX, USA
Description: You will be the Project Engineer for the System Integration and Test team which is responsible for developing and delivering advanced system solutions that push the boundaries of aerospace technology. What You Will Be Doing As the Project Engineer you will be responsible for orchestrating project activities across multiple initiatives, translating technical concepts into actionable plans, and ensuring alignment with cost and schedule targets. Your responsibilities will include: Identifying and organizing work for each project. Building and maintaining integrated project schedules. Providing data to leadership to support cost and schedule management. Crafting strategies to effectively use both internal and external tools for workflow management. Collaborating with technical teams to create roadmaps and long‑range strategies. What’s In It For You We are committed to supporting your work‑life balance and overall well‑being,...
WR Systems, Ltd.
Mar 19, 2026
Mechanical Engineer, Senior
WR Systems, Ltd. VA
Clearance Requirement: Active Secret Clearance is required to start Travel Requirements: 5-10% Location: Dam Neck - Virginia Beach, VA SUMMARY: WR has a potential opportunity for a Mechanical Engineer, Senior in support of our NAVSEA P&EDM contract. The candidate will be responsible for the design and documentation of mechanical and electromechanical components and systems, as well as supporting fabrication and integration efforts. Position responsibilities will include, but are not limited to the following: Documenting and designing mechanical and electromechanical components and systems. Developing complete drawing packages (Level-3 drawings, block diagrams, Bills of Materials [BOM], manufacturing, assembly, modeling, renderings, and installation) using Autodesk Inventor 3D. Independently analyzing specifications and performance requirements to ensure designs are manufacturable with existing methods. Determining the feasibility of new or...
WR Systems, Ltd.
Mar 19, 2026
Systems Engineer, Basic
WR Systems, Ltd. VA
Clearance Requirement: Active Secret Clearance is required to start Travel Requirements: 5% Location: Norfolk, VA SUMMARY: WR has a potential opportunity for a Systems Engineer, Basic to design and develop systems-level solutions and provide systems support as directed. Position responsibilities will include, but are not limited to the following: Serve as full-time VTL code author for the SABER-NAV project Attend SABER-NAV IPT meetings, working groups, and weekly synchronization meetings Support the development of VTL scripts for Interface Design Document (IDD) and related documentation Assist with the development and updates of the Systems Requirement Traceability Matrix (SRTM) Demonstrate capabilities and update the SABER-NAV model as needed Work under the direct technical supervision of senior personnel Collaborate with engineering staff to evaluate interface requirements between hardware, software, operations, and performance...
Lockheed Martin
Mar 19, 2026
Software Engineer – Platform Performance & Data Analytics
Lockheed Martin Fort Worth, TX, USA
Description: We are Lockheed Martin Lockheed Martin is seeking a motivated and capable Software Engineer to support the design, development, and delivery of advanced analytics solutions for platform performance metrics. This is a hands-on technical role where you will contribute across the solution lifecycle — from requirements analysis and implementation through integration, testing, and deployment. A successful candidate will possess a solid foundational understanding of software engineering concepts and will apply that knowledge to solve a variety of technical problems. They will work under general supervision, receiving direction on assignments while exercising increasing independence as they build proficiency. Their work will be reviewed regularly to support professional growth and quality assurance. The selected candidate will work as an active contributor within a cross-functional engineering organization, engaging in technical discussions and implementation tasks...
Lockheed Martin
Mar 19, 2026
Software Engineer Sr - Level 3
Lockheed Martin Fort Worth, TX, USA
Description: We are Lockheed Martin You will join the ADP Mission Systems DSO team as a Senior Software Engineer. In this role you will: What You Will Be Doing -Apply modern techniques to design and implement CI/CD pipelines. -Implement Infrastructure‑as‑Code (IaC) practices for reliable, repeatable deployments. -Lead key initiatives across the team. -Deploy, manage, and operate containerized applications within a Kubernetes environment. What’s In It For You: From onsite to remote, we offer flexible work schedules to comprehensive benefits investing in your future and security, Learn more about Lockheed Martin’s comprehensive benefits package here. Do you want to be part of a company culture that empowers employees to think big, lead with a growth mindset, and make the impossible a reality? We provide the resources and give you the flexibility to enable inspiration and focus -if you have the passion and courage to dream big, work hard, and have fun doing what you...
Lockheed Martin
Mar 18, 2026
Senior Software Engineer – Platform Performance & Data Analytics
Lockheed Martin Fort Worth, TX, USA
Description: We are Lockheed Martin Lockheed Martin is seeking a highly skilled and experienced Senior Software Engineer to support the design, development, and delivery of advanced analytics solutions for platform performance metrics. This is a hands-on technical role requiring demonstrated expertise across the full solution lifecycle from concept development and architecture definition through integration, deployment, and performance validation. A successful candidate will possess a comprehensive understanding of concepts within the field and related disciplines and will apply this knowledge to develop practical solutions to a range of complex problems. They will work under general direction, participating in determining assignment objectives and working independently to achieve goals. Their work will be reviewed at critical points, and they will exert some influence on the overall objectives and long-range goals of the organization. The selected candidate will serve as a...
Lockheed Martin
Mar 18, 2026
Lead Electrical Power Engineer
Lockheed Martin Moorestown, NJ, USA
Description: What We're Doing Lockheed Martin is shaping the future of defense through cutting edge radar and missile defense technologies, and we want you to help write the next chapter. As the premier developer of active electronically scanned array (AESA) radars and integrated air and missile defense solutions for the U.S. military, our allies, and more than 45 nations worldwide, we deliver world class situational awareness, early warning, and kill assessment capabilities in the most demanding environments. Join a global team of 35 000 engineers, software developers, and cyber experts who turn complex challenges into reliable, next generation systems that keep warfighters ahead of emerging threats. Your talent will power everything from space domain awareness to ground based radar testbeds, ensuring the safety of today’s forces and the security of tomorrow’s world. The Work Successful can will: The Level 4 Power Systems Engineer is a senior technical contributor...
Lockheed Martin
Mar 18, 2026
Senior Staff Project Engineer - Secret Clearance Required
Lockheed Martin Littleton, CO, USA
Description: Who We Are: Come join the Signals Reconnaissance Program within RMS to craft and develop outstanding solutions! The Signals Reconnaissance family of programs supports the C4ISR Line of Business (Command, Control, Communications, and Computers Intelligence, Surveillance and Reconnaissance) as well as Independent Research and Development (IRAD) efforts. These systems demand development of advanced software solutions as well as Performs technical planning, system integration, verification and validation, cost and risk, and supportability and effectiveness analyses for total systems, and information technology related responsibilities including design, development, and analysis of computer systems or programs based on and related to user or system design specifications; applying systems analysis techniques and procedures, including consulting with users to determine hardware, software, or system functional specifications. Analyses are performed at all levels of total...
Lockheed Martin
Mar 18, 2026
Manufacturing Engineer Sr / Orlando, FL
Lockheed Martin Orlando, FL, USA
Description: Job Description Join our team as a Senior Manufacturing Engineer for the Machining Operations Center/Manufacturing Engineering Team. Our team is responsible for creating and improving manufacturing strategies for ultraprecision CNC machined. Our team plays a crucial role in developing and implementing solutions for technical and organizational challenges. What You Will Be Doing As a Senior Manufacturing Engineer your focus will be on driving solutions, your responsibilities will include: Deliver verbal and written status reports, highlighting project milestones and progress. Communicate project risks, solutions, and schedule impacts to stakeholders. Prioritize tasks to ensure the team is progressing in the right direction. Represent the team in programmatic reviews and status meetings. Assist in the development of proposals. Create/update work instructions, mfg. sketches, and other shop floor documentation to support production...
General Dynamics Mission Systems, Inc
Mar 18, 2026
Advanced Software Engineer
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Requires a Bachelor’s degree in Software Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 5+ years of job-related experience, or a Master's degree plus 3 years of job-related experience. 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: Provide senior technical expertise and guidance for SLCM-N software architecture and development Contribute to architectural standards, technical roadmaps, and design decisions for networking protocols, socket programming, and distributed...
General Dynamics Mission Systems, Inc
Mar 18, 2026
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 5+ years of job-related experience, or a Master's degree plus 3 years of job-related experience. 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: Provide senior technical expertise and guidance for systems engineering activities across payload systems programs Lead requirements management, architecture development, and technical solutions that balance customer needs with program...
U. S. National Security Agency
Mar 18, 2026
Engineer/Developer - Software, Hardware, Research (Capabilities Development Specialist) - Mid to Expert Level (Maryland)
U. S. National Security Agency Fort Meade, MD, USA
Responsibilities: Are you driven by a passion to work at the cutting edge of technology? Do you dream to make the impossible possible? The National Security Agency is seeking highly motivated Computer Science and Computer/Electrical Engineering professionals to drive its mission to develop new capabilities, design new approaches, help solve complex problems, and research new solutions to propel our mission. As a Capabilities Development Specialist (CDS), your job will be to develop custom high-priority offensive and defensive capabilities targeting the hardest-to-reach adversarial networks in the world. In defense of our Nation, we conduct innovative research and produce hardware and software tools unlike anything in the world. By joining our team, you will apply and grow your expertise to create new ways to get critical information to our national decision makers. Whether it is in software, hardware, or cutting-edge research, if you are up for a challenge, have unbridled...
SAIC
Mar 18, 2026
Software Engineer
SAIC VA
Description SAIC has an immediate need for a Mid to Senior Full Stack Software Engineer with expertise in Java, C#, React and NiFi to support the Department of Defense (DoD) with the Defense Readiness Reporting System (DRRS) Sustainment system. The ideal candidate should possess deep technical acumen, thrive in a collaborative environment, and have the ability to deliver robust, scalable, and innovative solutions. While proficiency in all the listed technologies is ideal, we are also open to candidates who are highly skilled in some with a willingness to learn others. As a Software Engineer, you will play a key role in designing, developing, and maintaining enterprise-level applications. You will work closely with cross-functional teams to deliver high-quality software solutions aligned with organizational goals and user needs. NOTE: This position will be 100% remote. Key Responsibilities: Design, develop, and maintain reliable, scalable, and secure applications...
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