Systems Engineer Senior (Secret Clearance)

Reference: 732657BRPosted: 2026-06-18Location: Colorado Springs, COSalary: $89,300 - $157,550Clearance: SecretCompany: Lockheed MartinDescription:WHAT WE'RE DOINGOur team at Lockheed Martin, is dedicated to engineering, developing, and integrating new capabilities for the Missile Defense System that protects the United States and its allies. While we are part of a large organization, we operate within smaller, agile teams in a fast-paced, dynamic environment. Our responsibilities include Sensor/Weapon Integration, Algorithm Development, User Interface Development, Automated Testing, Cyber Security, and enhancing critical missile defense technologies.THE WORKThis position will perform some or all of the following duties, concentrating on early-phase (concept, requirements, and design) activities of the Systems-Engineering Development Lifecycle:1.Lead the development of new system concepts by transforming stakeholder needs, acquired through documentation and solicitation, into easily reviewable technical approaches.2.Perform requirements elicitation and decomposition using behavioral artifacts such as use cases, activity diagrams, and sequence diagrams to convey understanding of the required behaviors and performance of the system under development.3.Lead the development of physical and logical system models capturing the system under development utilizing Model-Based Systems Engineering (MBSE) approaches and tools.4.Lead system interface development, as captured in Interface Control Documents (ICDs) and Interface Design Descriptions (IDDs), by converting system and interface requirements into message-level details sufficient to coordinate interface development.5.Support formal and informal engineering technical reviews.6.Create, review and critique interface documents, system requirements, verification documentation, architectural documentation, and engineering estimates.7.Interface with key stakeholders, including the MDA customer and working-level counterparts, as-required.8.Participate in Agile development planning and execution, including iteration planning and status reporting.Please Note:-This position requires a government security clearance; you must be a U.S. Citizen for consideration. -The role will involve approximately 10% travel to customer sites throughout the U.S.WHY JOIN US• Excellent benefits and amenities.• Ongoing career development and support.• Rewards and recognition for your hard work.• Medical and dental coverage.• 401k retirement savings plan.• Paid time off for work/life balance.• Mentorship opportunitiesBasic Qualifications:•A final secret clearance is required for consideration.•Experience in an integrated team, covering the full Systems Engineering Development Lifecycle.•Experience interacting directly with customers to elicit needs and define requirements.•Hands on work with missile defense, space defense (Space Domain Awareness), or other similar space mission elements.•Proficiency in Model Based Systems Engineering (MBSE) using tools such as Cameo, etc.Desired Skills:- Strong prior experience with use of MSOSA (Cameo) and DOORS.- Demonstrated experience modeling or simulating missile defense applications or similar domains (air combat, air defense, intercept of ballistic targets, intercept of non-ballistic targets, space vehicles, suborbital mechanics, etc.). - Knowledge of ballistic and advanced threat systems (e.g., aero-maneuvering, hypersonic, hyper-glide, countermeasures, etc.). - Modeling and analysis experience in aspects of the missile defense system (e.g., Aegis Weapons Systems, Ground-based Midcourse Defense (GMD), Glide Phase Intercept (GPI), Hypersonic and Ballistic Tracking Space Sensor (HBTSS), Fire Control, C2BMC, MDS sensors (EO/IR/RF), kill vehicles, interceptors, countermeasures, etc.). - Systems engineering experience with large, complex systems.Security Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration.Clearance Level: SecretOther 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: 4x10 hour day, 3 days off per weekPay 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.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.Join us at Lockheed Martin, where your mission is ours. Our customers tackle the hardest missions. Those that demand extraordinary amounts of courage, resilience and precision. They’re dangerous. Critical. Sometimes they even provide an opportunity to change the world and save lives. Those are the missions we care about.As a leading technology innovation company, Lockheed Martin’s vast team works with partners around the world to bring proven performance to our customers’ toughest challenges. Lockheed Martin has employees based in many states throughout the U.S., and Internationally, with business locations in many nations and territories.Experience Level: Experienced ProfessionalBusiness Unit: RMSRelocation Available: PossibleCareer Area: Systems Engineering: Models and SimulationsType: Task Order/IDIQShift: First