Senior Software Engineer - Top Secret Clearance

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

Job Description:

Job 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. This position is contingent upon the program award expected in early 2026. Within the Victor Portfolio of Space Security, we are seeking a highly skilled, motivated, and experienced Software Engineer to join our dynamic team. This exciting position will fill a critical need in the new and emerging area of protecting space assets. As part of an Agile team, you will have the opportunity to work on a variety of tasks in various areas across the mission and collaborate with the development teams, contractors, customers, and subject matter experts. As a key member of the software development team, you will be part of the entire engineering life-cycle, and apply your Software Engineering background to develop web applications in an open architecture infrastructure. If you are looking for a new position in a fast-paced team environment, where every day brings a new challenge, and want to support a critical space security mission, then this is the place for you. In this position you will • Collaborate with an exceptional team of Software Engineers implementing solutions and developing new features for a command and control application. • Serve as a software developer on an Agile team tasked with developing cutting edge web applications within multiple classification domains • Participate in daily scrums, software sprint/release planning, demos, and retrospectives. • Develop & demonstrate software capabilities to both internal and external partners. 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 • Experienced in software development using programming and scripting languages such as Java, JavaScript, C#, Python, etc. • Experience working in an Agile development environment, including tools such as Jira and Confluence • US citizenship is required to obtain a government security clearance • Active Top Secret clearance with the ability to obtain and maintain SCI clearances Desired skills • Experience in application containerization (e.g. Docker, Kubernetes, Helm, etc.) in a cloud environment (AWS/Azure/Openstack/Openshift) • Experience with frameworks such as .NET Core, Angular, etc. • Experience with GitLab CI/CD - Deployment pipelines, automated build, and/or configuration tools • Experience with databases (PostgreSQL & Redis) • Strong knowledge of modern technology frameworks, cloud platforms (AWS, Azure, GCP), microservices, APIs, DevOps, and data architecture. • Experienced with Horizon software application providing command and control services for satellites, antennas, and ground hardware assets. • Experience with modern engineering practices such as Cross-Functional Agile teams and Capability-based planning • Active TS/SCI security clearance • Bachelor's degree in a related discipline, such as Computer Science, Software Engineering or other engineering disciplines or equivalent experience, with 5 or more years of professional experience; or 3 years of professional experience with a related Master’s degree LMSpaceSoftwareEng SpaceSecurity 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 $93,200 - $164,450. 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 $107,300 - $185,840. 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, Trenton , Senior Software Engineer - Top Secret Clearance, Engineering , King of Prussia, New Jersey