Systems Engineer Sr, Level 3

Lockheed Martin
King of Prussia, PA

Description: 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. Were creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security vision. Were erasing boundaries and forming partnerships across industries and around the world. Were advancing spacecraft and the workforce to fuel the next generation. And were 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.

Generating and simulating operational level plans to explore the art of the possible, how we could defend the ultimate high ground in a future space war
Dynamically optimizing both terrestrial and space-based sensors to provide comprehensive space domain awareness
Strategically optimizing the placement and maneuvering of constellations of satellites to satisfy multiple, evolving priorities

Our team leverages industry standard open-source software solutions such as GitLab, Kubernetes, Docker, and Rancher. Our automation-first and everything as code mindset allows our software engineers to focus their time and efforts on what is most important - building cutting edge functionality for our end users.

As an engineer on an Agile Scrum Team, you will have the opportunity to rapidly develop and deploy solutions for a complex space system following core engineering principles, ultimately enabling the delivery of fully functioning mission capability to end users securely and continuously.
Basic Qualifications:
Recent on-program Systems Engineering experience (e.g., requirements development, systems test planning/execution, requirements analysis and verification, integration, etc.)
Demonstrated experience with applying systems engineering principles, concepts, and methods
Demonstrated experience with system integration, verification, and validation
Experience working on large-scale, agile software projects with multiple teams and stakeholders
No clearance needed to start but must be able to obtain and maintain a TS/SCI clearance
Desired Skills:
Develop and implement system test plans, procedures, and protocols
Support the integration, verification, and validation of systems and subsystems
Develop and maintain system architecture, design, and performance requirements in an Agile environment
Perform system analysis, modeling, simulation, and trade studies
Experience with Agile tools, such as JIRA and Confluence
Experience with cloud environments (AWS, Azure, Openstack, GCP, etc.) or traditional IT systems
Excellent communication and interpersonal skills, with the ability to work effectively in a team environment
Strong problem-solving and analytical skills, with attention to detail and ability to think critically
Ability to adapt to changing priorities and deadlines, with a focus on delivering high-quality results
Familiarity with the Space Domain
Active TS/SCI security clearance

#LMSpaceSystemsEng
#SpaceSecurity
Security Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration.
Clearance Level: TS/SCI
Other Important Information You Should Know
Expression of Interest: By applying to this job, you are expressing interest in this position and could be considered for other career opportunities where similar skills and requirements have been identified as a match. Should this match be identified you may be contacted for this and future openings.
Ability to Work Remotely: Onsite Full-time: The work associated with this position will be performed onsite at a designated Lockheed Martin facility.
Work Schedules: Lockheed Martin supports a variety of alternate work schedules that provide additional flexibility to our employees. Schedules range from standard 40 hours over a five day work week while others may be condensed. These condensed schedules provide employees with additional time away from the office and are in addition to our Paid Time off benefits.
Schedule for this Position: 9x80 every other Friday off
Lockheed Martin is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics.
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.
Join us at Lockheed Martin, where your mission is ours. Our customers tackle the hardest missions. Those that demand extraordinary amounts of courage, resilience and precision. Theyre dangerous. Critical. Sometimes they even provide an opportunity to change the world and save lives. Those are the missions we care about.

As a leading technology innovation company, Lockheed Martins vast team works with partners around the world to bring proven performance to our customers toughest challenges. Lockheed Martin has employees based in many states throughout the U.S., and Internationally, with business locations in many nations and territories.
Experience Level: Experienced Professional
Business Unit: SPACE
Relocation Available: Possible
Career Area: Miscellaneous Engineering
Type: Full-Time
Shift: First
Posted 2026-05-15

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