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141 senior software engineer level 3 jobs found

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Information Technology United States senior software engineer level 3
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Lockheed Martin
Mar 25, 2026
Senior Software Engineer, Level 3 - Clearance Required
Lockheed Martin Houston, TX, 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 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. Lockheed Martin Space is seeking a full time Software Engineer. In this role, you will...
Lockheed Martin
Mar 24, 2026
Senior Software Engineer – Level 3
Lockheed Martin Fort Worth, TX, USA
Description: The Fusion team is looking for an experienced, process‑driven C++ developer to join our simulation team. In this role you will integrate third‑party models and build detailed simulations for our testing environment, ensuring the Fusion product is delivered efficiently and with the highest quality. The ideal candidate demonstrates excellent problem‑solving abilities, a collaborative mindset, and a proven capacity to work independently. 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 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...
Arrow Electronics
Apr 09, 2026
Quality Engineer
Arrow Electronics Phoenix, AZ, USA
Position: Quality Engineer Job Description: Arrow's Phoenix Integration facility has an exciting opportunity to join the team as a Quality Engineer. In this role you will collaborate across multiple departments to ensure consistent and sustainable quality results. 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 154 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...
Lockheed Martin
Apr 09, 2026
Senior Communications / RF Engineer
Lockheed Martin San Diego, CA, USA
Description: WHAT WE’RE DOING Lockheed Martin’s Rotary and Mission Systems’ External Communications (EXCOMM) team is looking for a proven and experienced technical leader to support the design and development of shipboard communications systems for multiple small ships programs. The EXCOMM team delivers an integrated communications suite consisting of COTS software-defined radios, signal amplifiers, RF distribution/switching, system monitoring, secure digital voice, and data communications switching. As a technical expert on RF and communication systems, you will work with team leads to ensure effective system design, seamless integration, and rigorous testing and verification including troubleshooting efforts. Your technical background and strong leadership skills, will position you as an emerging leader for the team and help shape system design to keep the program on track for success. THE WORK As a senior RF and Communications System Engineer, you will be responsible for...
Lockheed Martin
Apr 09, 2026
ASIC & FPGA Design Engineer Sr / Syracuse, NY
Lockheed Martin Liverpool, NY, USA
Description: What We're Doing At Lockheed Martin, we are passionate about innovation and integrity. We believe that by applying the highest standards of business ethics and forward-thinking, everything is within our capacity – and yours as a Lockheed Martin employee. Lockheed Martin values your skills, training, education, and background! The Work As an FPGA Engineer you will; • Perform complex FPGA firmware architecture and/or custom digital board designs. • Design digital signal processing, messaging, control, and high-speed communications. • Interface and collaborate with program leadership and teammates on a regular basis. • Estimate, break down and plan work for their firmware team. • Take a high DSP algorithm for a radar system and break it into small pieces and coach junior engineers. Who We Are Our team comprises a diverse group of highly motivated and dedicated technical professionals. We foster a collaborative environment that values teamwork and creativity....
Lockheed Martin
Apr 09, 2026
Software Engineer - Level 2
Lockheed Martin Fort Worth, TX, USA
Description: We are Lockheed Martin Lockheed Martin’s products play an important role in the national security of the United States and more than 70 other countries, ensuring peace and stability around the world. Highly trained and specialized personnel and facilities are key to the company’s unrivaled success in the aeronautics industry. Our workforce of more than 25,000 has pre‑eminent expertise in advanced aircraft design and production, modification and support, stealth technology and systems integration. What You Will Be Doing This position is for a Mission Assurance Software Engineer supporting the F-35 Joint Strike Fighter (JSF) and Integrated Fighter Group (IFG) platforms. Opportunities to support other LM Aero platforms may become available as the candidate progresses in this role. The role requires a solid technical foundation, the ability to work in an agile environment under general direction, and a foundation in embedded software development. The candidate...
Lockheed Martin
Apr 09, 2026
Software Engineer - Level 3
Lockheed Martin Fort Worth, TX, USA
Description: We are Lockheed Martin Lockheed Martin’s products play an important role in the national security of the United States and more than 70 other countries, ensuring peace and stability around the world. Highly trained and specialized personnel and facilities are key to the company’s unrivaled success in the aeronautics industry. Our workforce of more than 25,000 has pre‑eminent expertise in advanced aircraft design and production, modification and support, stealth technology and systems integration. What You Will Be Doing This position is for a Mission Assurance Software Engineer Senior supporting the F-35 Joint Strike Fighter (JSF) and Integrated Fighter Group (IFG) platforms. Opportunities to support other LM Aero platforms may become available as the candidate progresses in this role. The role requires excellent technical skills, proven ability to work in an agile environment, and a solid foundation in embedded software development. The candidate...
Lockheed Martin
Apr 09, 2026
Software Engineer - Level 4
Lockheed Martin Fort Worth, TX, USA
Description: We are Lockheed Martin Lockheed Martin’s products play an important role in the national security of the United States and more than 70 other countries, ensuring peace and stability around the world. Highly trained and specialized personnel and facilities are key to the company’s unrivaled success in the aeronautics industry. Our workforce of more than 25,000 has pre‑eminent expertise in advanced aircraft design and production, modification and support, stealth technology and systems integration. What You Will Be Doing This position is for a Mission Assurance Software Engineer Staff supporting the F-35 Joint Strike Fighter (JSF) and Integrated Fighter Group (IFG) platforms. Opportunities to support other LM Aero platforms may become available as the candidate progresses in this role. The role requires advanced technical expertise, proven ability to drive agile development activities, and deep experience in embedded and mission-critical software. The...
Lockheed Martin
Apr 09, 2026
Software Engineer - Level 5
Lockheed Martin Fort Worth, TX, USA
Description: We are Lockheed Martin Lockheed Martin’s products play an important role in the national security of the United States and more than 70 other countries, ensuring peace and stability around the world. Highly trained and specialized personnel and facilities are key to the company’s unrivaled success in the aeronautics industry. Our workforce of more than 25,000 has pre‑eminent expertise in advanced aircraft design and production, modification and support, stealth technology and systems integration. What You Will Be Doing This position is for a Mission Assurance Software Engineer Senior-Staff supporting the F-35 Joint Strike Fighter (JSF) and Integrated Fighter Group (IFG) platforms. Opportunities to support other LM Aero platforms may become available as the candidate progresses in this role. The role require expert-level technical mastery, a proven ability to define and steer agile development strategy, and visionary experience in embedded and...
Lockheed Martin
Apr 09, 2026
F-22 IMIS Portfolio Integrator-Level 6
Lockheed Martin Fort Worth, TX, USA
Description: We are Lockheed Martin You will be the Software Engineer Principal for the IMIS Software Integration team which is responsible for delivering mission critical software solutions for the F 22 program. What You Will Be Doing As the Software Engineer Principal you will be responsible for shaping the end to end software delivery lifecycle and serving as the central liaison between engineering, program management, and customers. Your responsibilities will include: • Portfolio Integrator will tend to be outward facing (to Business Manager, PMO, Customer) • Main interface to Program Management Office for future and current contract tasks • Main interface to the F-22 LOB Chief Engineer's Office • Coordinate and negotiate planned and final delivery content with Air System customers • Provide primary interface point for delivery and issue discussions • Works with first and second line functional leaders to identify program team staffing needs • Collaborate...
Lockheed Martin
Apr 08, 2026
Systems Engineer Senior - Level 3
Lockheed Martin Fort Worth, TX, USA
Description: What You Will Be Doing: As a Senior Systems Engineer on the F-35 Sustainment Supply Operations and Logistics (SO&L) team, you will play a pivotal role in ensuring the efficiency and readiness of the F-35 supply network. This high-visibility position involves analyzing, decomposing, and aggregating program information to establish clear Prime Requirements in collaboration with customers. You will leverage your expertise in systems engineering to optimize supply operations, covering areas such as OEM capability, PBL performance, component depot operations, modeling, reliability and maintainability, provisioning, fleet performance, and depot flow plans. Key Responsibilities - Manage and maintain system requirements, including functional, performance, and interface specifications. - Lead interactions with internal and external customers, including meetings and presentations, ensuring alignment and satisfaction. - Collaborate with cross-functional teams to support...
Lockheed Martin
Apr 08, 2026
Human Machine Interface Engineer - Skunk Works
Lockheed Martin Fort Worth, TX, USA
Description: The Human Systems Engineering team is seeking a dynamic Human Machine Interaction Engineer to support Lockheed Martin Skunkworks efforts with the design and development of the Multi-Domain Control Station (MDCX) – Mission Management Software. The candidate will design, develop and integrate operator interfaces with system architectures, including complex systems and system design activities. Specific activities may include the following: -Develops systems and system element architecture, design, and software interface definitions. -Assists with the development and communication of the system architecture requirements for operator interfaces. --Integrates operator interfaces with Universal Command and Control Interface (UCI) message sets and architectures. -Presents HMI design concepts (in the form of figures, drawings, or simulations) to the customer for evaluation. --Conveys customer intent and operational impact to system architects and designers to inform...
U. S. National Security Agency
Apr 08, 2026
NSA Technical Hiring Effort FY2026 - Mid to Experienced 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...
Lockheed Martin
Apr 07, 2026
Systems Safety Engineer
Lockheed Martin Liverpool, NY, USA
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
Apr 07, 2026
Applications Engineer - Level 2
Lockheed Martin Fort Worth, TX, USA
Description: You will be the Applications Engineer - Level 2 for the Manufacturing Technology team which is responsible for planning, developing, and integrating advanced manufacturing technologies. What You Will Be Doing As the Applications Engineer - Level 2 you will be responsible for delivering technical solutions that improve production operations and support the next generation of Manufacturing Systems. Your responsibilities will include: Investigate production‑system capabilities and evaluate software tools that can enhance fabrication and assembly processes. Design new production processes, coordinate digital‑transformation solutions with IT architects, and present requirements to core process owners. Lead technical project‑management activities for major initiatives, ensuring timely delivery and stakeholder alignment. Develop, document, train, and deploy Production Operations Business Processes using Siemens Xcelerator and Dassault 3DX tool...
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 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
Software Quality Engineer (Level 3)
Lockheed Martin Orlando, FL, USA
Description: What You Will Be Doing At Lockheed Martin, 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. This requisition is for a Software (SW) Quality Engineer supporting the F-35 line of business for the Lockheed Martin (LM) Aeronautics company in Orlando, FL. This position reports directly to the F-35 Autonomic Logistics Information System / Operational Data Integrated Network (ALIS/ODIN) Senior Quality Manager. The individual must be able to work with only general supervision, be comfortable communicating to all levels of leadership (both internal & external) and have developed SW Quality Engineering skills. This position may require occasional business travel. Responsibilities include (but not limited to): • Facilitate/assist in the...
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...
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