> Markdown version of [/jobs/ext/3596646-systems-engineer-sr-staff-clearance-required](https://www.wearedevelopers.com/jobs/ext/3596646-systems-engineer-sr-staff-clearance-required). 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). --- # Systems Engineer Sr Staff - Clearance Required - **Company:** Lockheed Martin - **Location:** Huntsville, AL, United States - **Experience:** Expert - **Salary:** $129,000.0 - $239,600.0 - **Contract:** Permanent contract - **Skills:** Systems Engineering, Architectural Patterns, Cloud Computing, Orbital Mechanics, SC Clearance - **Published:** October 6, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9220893/systems-engineer-sr-staff-clearance-required ## About the Role * Experienced in systems engineering, particularly in requirements generation, concept development, analysis, and simulation * Skilled in leading technical teams and providing oversight in a complex engineering environment * Proficient in interfacing with technical stakeholders and managing technical documentation and baselines * Adept at preparing and delivering technical briefings and engineering products * Strong project management skills with experience in monitoring tasks, schedules, scope, and costs, * The Responsible Systems Engineer must have 8 years of experience demonstrating a strong technical background in systems engineering, architecture development, functional decomposition, and allocation of requirements (performance, functional and interface definition) with system-modelling tools. * Strong prior experience with use of MSOSA (Cameo) and DOORS and demonstrated knowledge in any of the MDA domain areas, including 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), IAMD (Integrated Air and Missile Defense) Battle Command System (IBCS), Space-Based Interceptor (SBI), Next-Generation Interceptor (NGI), Overhead Persistent Infrared (OPIR) systems, Cruise Missile Defense, Air Defense. * Ability to think critically and capture concepts in papers, presentations, and discussions. * Strong communication/presentation skills to communicate concepts and technical approach to customer. Must be capable of working independently, within a small team environment, and work in close coordination with the customer. * Bachelor's Degree in an engineering classification, mathematics or physics is required. Masters or PhD is preferred. * A Secret Clearance is required for consideration. Must be a US Citizen. Desired Skills * 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, sub-orbital mechanics, etc.). * Knowledge of ballistic and advanced threat systems (i.e., 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), Air Defense (RIG-360, EX-BAR, Air Base Air Defense System (ABADS), Cloud Based Command and Control (CBC2), IAMD Battle Command System (IBCS)) . * Systems engineering experience with large, complex systems. ## Description The System Engineering & Integration Team (SE&IT) is seeking a Responsible Systems Engineer (RSE) to join the System Design and Requirements Capability team in Huntsville, AL. The successful candidate will lead cross-functional systems engineering teams to develop system level technical solutions for the Missile Defense Agency (MDA). The candidate will guide the development of system level architecture, requirements, and interfaces to influence incremental capability. The candidate will use Model Based Systems Engineering (MBSE) to evaluate architectural impacts through functional behavior analysis for the defeat of conventional and advanced Threat (i.e., ballistic, aero-maneuvering, hyper-glide, countermeasures, etc.) systems within the MDA mission areas. The RSE will use the MBSE environment collaborate to develop system-of-systems requirements via system/component trade studies and analysis and lead the development of Change Notices (CNs) to MDA's system specification including functional, interface and performance requirements, architectural models, interface definitions, and support Trace verification from System to Element level requirements. The RSE will develop and deliver products (i.e., technical briefings, CNs) to support internal and MDA stakeholder reviews.