System Engineer Sr - Level 3

Senior Systems Engineer – F‑35 Test Operations & Planning

You will be the Senior Systems Engineer for the F‑35 Test Operations team. Our team drives system integration and testing across the F‑35 program, delivering detailed test plans, managing test environments, lab infrastructure, schedules, and resources. By collaborating with software, architecture, design, and test groups, we ensure the aircraft's modernization, sustainment, and development are validated and field-ready.

As the Senior Systems Engineer, you will be responsible for:

• Developing and maintaining detailed test plans that define scope, environments, lab setups, schedules, and resource allocation for F‑35 testing.
• Coordinating test execution across hardware-in-the-loop, software-in-the-loop, and mixed-reality labs, ensuring alignment with program milestones.
• Partnering with cross-functional teams (software, architecture, design, and system test) to integrate requirements and resolve technical challenges.
• Tracking and reporting test metrics while identifying opportunities for process improvement to support F‑35 modernization, sustainment, and new-development efforts.

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 love then we want to build a better tomorrow with you.

This position is in Fort Worth, TX. Discover Fort Worth.

You will need to be a US Citizen, and currently possess and be able to maintain a US DoD SECRET clearance, to support this government contract, as well as successfully pass a drug and background check, in order to meet eligibility requirements for access to classified information.

Basic Qualifications:

• Bachelor of Science in a STEM discipline (engineering preferred).
• Project Engineering Experience and/or Systems Engineering.
• Active Secret clearance or higher.

Desired Skills:

• Experience with Integration and Test.
• Experience in developing and executing technical plans.
• Systems Engineering development and integration experience.
• Experience with requirement development that includes the scope of testing and the different testing environments.
• Experience in Mission Systems capabilities within aircraft platform(s).
• Experienced working with multiple LM Aero F‑35 engineering teams, such as System Design, Software, SWIT, or Integrated System Evaluation.
• Must be US citizen with ability to obtain Program Access Clearances.
• F‑35 Program Clearances.

The application window will close in 90 days; applicants are encouraged to apply within 5 - 30 days of the requisition posting date in order to receive optimal consideration.

At Lockheed Martin, we use our passion for purposeful innovation to help 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 diverse career opportunities designed to propel, develop, 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. We place an emphasis on empowering our employees by fostering an inclusive environment built upon integrity and corporate responsibility.

If this sounds like a culture you connect with, you're invited to apply for this role. Or, if you are unsure whether your experience aligns with the requirements of this position, we encourage you to search on Lockheed Martin Jobs, and apply for roles that align with your qualifications.