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System Engineer Sr - Level 3 - Top Secret Clearance Required Security Clearance

Job in King of Prussia, Montgomery County, Pennsylvania, 19406, USA
Listing for: Lockheed Martin
Full Time position
Listed on 2026-01-23
Job specializations:
  • Engineering
    Systems Engineer, Software Engineer, Aerospace / Aviation / Avionics, Cybersecurity
Job Description & How to Apply Below
Position: System Engineer Sr - Level 3 - Top Secret Clearance Required with Security Clearance
Job Number 713492

Description:

The coolest jobs on this planet... or any other... are with Lockheed Martin Space. At the dawn of a new space age, Lockheed Martin is a pioneer, partner, innovator, and builder. Our amazing people are on a mission to make a difference in the world and every single day we use our skills and experiences to create, design, and build solutions to some of the worlds' hardest engineering problems.

Our culture encourages employees to dream big, perform with excellence, and create incredible products. We provide the resources, inspiration and focus and if you have the passion and courage to dream big, we want to build a better tomorrow with you.
**** This Position is contingent upon program award expected in early 2026.
**** You will be responsible for developing system level artifacts and engaging with customers, mission partners, and other stakeholders to satisfy and fulfill customer directed objectives As a member of the Systems Engineering team you will:

• Perform in an accelerated, collaborative, dynamic small team environment, closely integrated with customers and contractors
• Ensure consistency of requirements and traceability back to customer objectives
• Planning and generating test cases in support of program milestone testing events

• Perform requirements verification to ensure the system is able to meet customer needs

• Ensure consistency of feature acceptance criteria to meet customer objectives Successful Applicants will demonstrate effective communication skills, desire challenges and be willing to engage in frequent internal interactions with peers, teammates, and customers. Selected applicants must meet eligibility requirements for access to classified information, and must maintain the required security throughout the course of employment

Basic Qualifications:

• Experience working with Agile teams leveraging Scrum or Kanban
• Ability to communicate effectively and work in a collaborative environment
• Experience developing Systems Engineering artifacts (e.g. requirements, architecture, procedures, etc.)

• This position requires a Top Secret clearance with investigation date within 5 years clearance prior to start with the ability to obtain and maintain an SCI clearance
Desired

Skills:

• Experience with model-based systems engineering (MBSE) and proficiency with systems engineering toolsets

• Experience with modern engineering practices such as Cross-Functional Agile teams
• Experience with Systems Engineering tools such as JIRA, and Confluence.
• Ability to interact with software developers to ensure mission requirements are satisfied
• Experience with Integration testing, software testing, system testing and independent verification and validation

• Experience with Dev Ops, CI/CD Pipelines, and deploying applications to test environments

• Experience writing, reviewing, tracing, and verifying requirements

• Experience working with external interfaces and generating documentation (e.g. ICDs) to support integration #LMSpace Systems Eng  #Space Security
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…
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