Systems Engineer Sr - Top Secret Clearance Required

Company: Lockheed Martin
Location: King of Prussia
Posted on: April 1, 2026

Job 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. 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 • Develop the verification details for the requirements to ensure that the system is able to meet the requirements and support the execution of these verification activities • Support the successful execution of program Interim Design Reviews • Development of systems engineering documentation such as feature description documents, trade studies, Interface Control Documents. Selected candidate must have an active TS security clearance for consideration. This is a EARLY-MID CAREER (level 3) ROLE where candidates typically require 3 years of professional experience and a BS degree. Our employees play an active role in strengthening the quality of life where we live and work by volunteering more than 850,000 hours annually. Here are some of the benefits you can enjoy: • Medical • Dental • 401k • Paid time off • Work/life balance • Career development • Mentorship opportunities • Rewards & recognition We care about our employees and offer a generous benefits package : 401K, PTO, and work/life balance and more. LI-CS1 Basic Qualifications • Demonstrates an Agile Mindset willing to adapt in a fast paced dynamic environment • Experience working with Agile teams leveraging Scrum or Kanban • Ability to communicate effectively and work in a collaborative environment • Experience developing Operations Procedures and training materials • An active TS Security Clearance is required for consideration with willingness to obtain TS/SCI. Desired skills • Experience with model-based systems engineering (MBSE) and proficiency with SysML and Cameo • Experience with modern engineering practices such as Cross-Functional Agile teams and Capability-based planning • Experience with Systems Engineering tools such as JIRA, and Confluence. • Ability to interact with software developers to ensure mission requirements are satisfied • Ability to understand complex Space mission planning & execution concepts and algorithms necessary to command and control advanced Space Vehicles in multiple orbital regimes. • Domain Experience and Understanding of Command and Control (C2), in one or more of these areas: Mission Management, Planning and Scheduling, Orbital Mechanics, SSA (Space Situational Awareness) LMSpaceSystemsEng SpaceSecurity SpaceNSS 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. * 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. Other Important Information 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 Schedule Information 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. Security Clearance Information This position requires a government security clearance, you must be a US Citizen for consideration. Pay Rate: The annual base salary range for this position in California, Massachusetts, and New York (excluding most major metropolitan areas), Colorado, Hawaii, Illinois, Maryland, Minnesota, New Jersey, Vermont, Washington or Washington DC is $89,300 - $157,550. For states not referenced above, the salary range for this position will reflect the candidate’s final work location. Please note that the salary information is a general guideline only. Lockheed Martin considers factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience, education/ training, key skills as well as market and business considerations when extending an offer. Benefits offered: Medical, Dental, Vision, Life Insurance, Short-Term Disability, Long-Term Disability, 401(k) match, Flexible Spending Accounts, EAP, Education Assistance, Parental Leave, Paid time off, and Holidays. (Washington state applicants only) Non-represented full-time employees: accrue at least 10 hours per month of Paid Time Off (PTO) to be used for incidental absences and other reasons; receive at least 90 hours for holidays. Represented full time employees accrue 6.67 hours of Vacation per month; accrue up to 52 hours of sick leave annually; receive at least 96 hours for holidays. PTO, Vacation, sick leave, and holiday hours are prorated based on start date during the calendar year. This position is incentive plan eligible. Pay Rate: The annual base salary range for this position in most major metropolitan areas in California, Massachusetts, and New York is $102,800 - $178,135. For states not referenced above, the salary range for this position will reflect the candidate’s final work location. Please note that the salary information is a general guideline only. Lockheed Martin considers factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience, education/ training, key skills as well as market and business considerations when extending an offer. Benefits offered: Medical, Dental, Vision, Life Insurance, Short-Term Disability, Long-Term Disability, 401(k) match, Flexible Spending Accounts, EAP, Education Assistance, Parental Leave, Paid time off, and Holidays. This position is incentive plan eligible.

Keywords: Lockheed Martin, Harrisburg , Systems Engineer Sr - Top Secret Clearance Required, Engineering , King of Prussia, Pennsylvania