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Job Title


Flight Software Systems Engineer Sr


Company : Lockheed Martin


Location : Littleton, CO


Created : 2026-04-13


Job Type : Full Time


Job Description

**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 re/-imagining 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 on program award expected early Q2 2026 This position is for a Software Systems Engineer supporting the Space Software Product Line Mobile User Objective System Service Life Extension /(MUOS SLE/) Flight Software Team/. This role will support the entire flight software development lifecycle /(design, integration, test/) for the Bus and Payload Flight Software domains/. Responsibilities could include working in a collaborative environment interacting with peers, other SSPL FSW, SmartSat team members, and occasional customer interactions/. This includes supporting the development of Specifications and Interface Control Documents, test scenarios to test new capability or verify defect fix, and participating in system testing activities with other organizations/. This role requires close collaboration across different IPTs on the program and with vendors to develop, test, and verify the flight software in a dynamic, agile environment with hardware in the loop/. **Basic Qualifications:** Knowledge of Software/Systems Engineering concepts and processes Demonstrated ability to communicate clearly and effectively both verbally and in writing is required/. **Desired Skills:** JIRA / Agile Methodology Experience performing Software testing or SW/HW integration activities Experience with Spacecraft Bus or Payload Flight Software /#LMSpaceSoftwareEng **Security Clearance Statement:** This position requires a government security clearance, you must be a US Citizen for consideration/. **Clearance Level:** Top Secret **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 **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/. **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/. **Experience Level:** Experienced Professional **Business Unit:** SPACE **Relocation Available:** Possible **Career Area:** Software Engineering **Type:** Full/-Time **Shift:** First