Software Engineer Sr. - (TS/SCI)

Reference: 729912BRPosted: 2026-05-28Location: King of Prussia, PennsylvaniaClearance: TS/SCICompany: Lockheed MartinDescription: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.  Within LM Space, the Fishhooks Program is looking for a highly motivated individual to join the program area as a Software Engineer Senior to support the development team. 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, customers, and subject matter experts. If you are looking for a challenging, collaborative, fast paced environment then this is the position for you. Note: This position requires a government security clearance, US citizenship is a requirement for consideration. In this position you will:  • Collaborate with an exceptional team of Software Engineers implementing solutions and developing new features for an RPO mission planning, scheduling, and command and control application.  • Serve as a software developer on an Agile team tasked with developing cutting edge web applications within multiple classification domains to serve an emerging area of protecting USG space assets.  • Participate in daily scrums, software sprint/release planning, demos, and retrospectives.  • Design, develop & demonstrate software capabilities to both internal and external partners.  • Work on a mission that you can be proud of, knowing that you are making a lasting difference in the world and in the Space domain.Basic Qualifications:• Bachelor's degree in a related discipline, such as Computer Science, Software Engineering or other engineering disciplines or equivalent experience  • Experience in software development using programming or scripting languages such as C#, JavaScript, Java, or Python  • Software design, problem solving, and troubleshooting skills  • This position requires an Active DOD Security Clearance to begin employment, at a minimum level of: Top Secret with active SCI  • Experience working in an Agile development environment, using tools such as Jira and ConfluenceDesired Skills:• Full development lifecycle experience  • Experience with the frameworks .NET Core and Angular  • Experience working as a member of an Agile Scrum or Kanban team  • Experience with databases (PostgreSQL & Redis)  • Experience with GitLab CI/CD - Deployment pipelines, automated build, and/or configuration tools  • Experience will cloud native development (Docker, Kubernetes, Helm)  • Familiarity with Mission Planning software applications for satellites, antennas, and ground hardware assets  • Familiarity with proximity operations, & satellite mission planning  • Experience with LM’s Conductor or Compass products   • Experience with DevSecOps  • Experience with Git, JIRA, Confluence  • Ability to communicate effectively and work in a collaborative environment  • Familiarity with the Space Domain   • Knowledge of Orbital dynamics  • Experience producing quality documentation  • Ability to obtain/maintain a TS/SCI clearance; US citizenship is required (no clearance is required to start; unclassified work is available until the clearance is obtained)   Applicants selected will be subject to a government security investigation and must meet eligibility requirements for access to classified information, and must maintain the required security throughout the course of employment#LMSpaceSoftwareEng#SpaceSecurity#SpaceNSSSecurity Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration.Clearance Level: TS/SCIOther Important Information You Should KnowExpression 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 offLockheed 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.Experience Level: Experienced ProfessionalBusiness Unit: SPACERelocation Available: PossibleCareer Area: Software EngineeringType: Full-TimeShift: First