> Markdown version of [/jobs/ext/2959993-model-based-systems-engineer-staff-secret-clearance](https://www.wearedevelopers.com/jobs/ext/2959993-model-based-systems-engineer-staff-secret-clearance). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Model Based Systems Engineer Staff (Secret Clearance) - **Company:** Lockheed Martin - **Location:** Huntsville, AL, United States - **Salary:** $131,100.0 - $243,500.0 - **Contract:** Permanent contract - **Skills:** Activity Diagram, Agile Methodology, Systems Engineering, Network Interface Controllers, Design of User Interfaces, Software Requirements Analysis, Verification and Validation (Software), Systems Integration, SC Clearance - **Published:** September 17, 2026 - **Apply:** https://www.jobmonkeyjobs.com/career/28025550/Model-Based-Systems-Engineer-Staff-Secret-Clearance-Alabama-Huntsville-1301 ## About the Role * A final secret clearance is required for consideration. * Experience in an integrated team, covering the full Systems Engineering Development Lifecycle. * Proven 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. ## Description This 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: * Lead the development of new system concepts by transforming stakeholder needs, acquired through documentation and solicitation, into easily reviewable technical approaches. * 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. * Lead the development of physical and logical system models capturing the system under development utilizing Model-Based Systems Engineering (MBSE) approaches and tools. * 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. * Support formal and informal engineering technical reviews. * Create, review and critique interface documents, system requirements, verification documentation, architectural documentation, and engineering estimates. * Interface with key stakeholders, including the MDA customer and working-level counterparts, as-required. * Participate in Agile development planning and execution, including iteration planning and status reporting., Performs technical planning, system integration, verification and validation, cost and risk, and supportability and effectiveness analyses for total systems. Analyses are performed at all levels of total system product to include: concept, design, fabrication, test, installation, operation, maintenance and disposal. Ensures the logical and systematic conversion of customer or product requirements into total systems solutions that acknowledge technical, schedule, and cost constraints. Performs functional analysis, timeline analysis, detail trade studies, requirements allocation and interface definition studies to translate customer requirements into hardware and software specifications. 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