Fort Belvoir, United States
Senior Systems Engineer
Mobius · Fort Belvoir · United States
Posted: 9/29/2026 · Last checked: 10/12/2026
Job description
Quoted in full from Mobius's job posting. Gavroche does not edit it.
Mobius is an award winning, Small Business Administration (SBA) certified Historically Underutilized Business Zone (HUBZone) company and certified Woman-Owned Small Business (WOSB) providing engineering, analytical, and programmatic expertise to the Federal Government and commercial customers. Our mission is to provide innovative advanced technology solutions to customers facing issues of national and global significance. We strive to be admired for excellent people, fair and honest partnership, innovative problem solving, and exceptional performance.
Come join our team! Mobius is seeking a Missile Defense System Senior Systems Engineer. In this role you will support the Missile Defense Agency's Architecture Concept Evaluation (MDA/CAC) office working to develop future Missile Defense architectures addressing ballistic and hypersonic missile threats to protect the homeland, regional Warfighters, and allies. As contract support, you will be supporting the development of missile defense concepts, analysis plans and tools, interpretation of analytical data, and interfacing with other government agencies to identify missile defense capability in their systems. These actions help MDA decision makers assess architecture alternatives and make investment decisions. This full-time salaried position is located on Fort Belvoir, VA. Work is 100% onsite in a customer-facing TS/SCI facility.
Duties of a Senior Systems Engineer may include:
- Work internally with MDA’s Chief Architect and other MDA offices, and interface and collaborate with other government agencies
- Work and collaborate in cross-functional teams with the technical customers, senior technical staff, and senior leaders
- Develop concepts, analysis plans, and top-level requirements for Missile Defense System (MDS) architecture alternatives.
- Produce and present technical and executive-level briefings, whitepapers, and reports to communicate concepts and value assessments to stakeholders.
- Review technical concept documents for consistency with approved baselines and system architectures, and contribute to the development of program plans and strategies.
Qualifications
- Minimum of 12 years working on missile defense-related or other complex, large DoD/DoW or IC programs/projects
- Knowledge of Missile Defense Systems (MDS) components, architectures, and concepts, with demonstrated understanding through analysis activities; MDS modeling and simulation experience is preferred
- Proficient with Microsoft Office applications (i.e., Word, Excel, & PowerPoint)
- Familiarity and experience with MDA and/or other complex MDS Elements
- Experience with Analysis of Alternatives (AoA) processes or related activities where cost, performance, and/or risk trade-offs were made to support engineering decisions
- Able to work independently on some tasks and lead teams to analyze and resolve problems on other tasks
- Able to plan and execute projects involving prime contractors, other MDA offices, and FFRDC/UARC partners
- Able to support the evaluation of future architecture elements and technology enablers that support ballistic, hypersonic and cruise missile defense
- Ability to decompose complex problems into actionable elements
- Ability to coordinate efforts in a timely manner across multiple organizations
- Ability to present complex information and concepts to leaders at various levels
- Ability to rapidly build, modify, or adapt M&S tools to answer novel questions, such as those relating to:
- Guidance, Navigation, and Control (GNC) and interceptor modeling
- Object tracking algorithm implementation or modeling
- RF and EO/IR phenomenology, sensor design and performance modeling (e.g. Optical sensor link budget modeling)
Education
- Master's degree in a STEM-related field
Clearance
- Active Top Secret clearance with current SCI eligibility
Mobius Benefits: Mobius offers a stable work environment, a competitive salary, and a comprehensive benefits package, which includes medical, dental and vision plans, 401k Plan, Flexible Work Schedules, Tuition Reimbursement, Paid Leave and much more.
Mobius is committed to hiring and retaining a diverse workforce. We are proud to be an Equal Opportunity Employer/Affirmative Action Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class.
Similar roles in Fort Belvoir
- Senior Systems Engineer · Mobius, Fort Belvoir
- System Engineer · Voltai, Palo Alto
- Controls/Systems Engineer - OR · SunSource, Tualatin
- Senior Systems Engineer I - Mission Architecture · Rocket Lab Corporation, Long Beach
- Senior Systems Engineer II · Rocket Lab Corporation, Tucson
- Principal Systems Engineer · Rocket Lab Corporation, Tucson
200 open roles like this one; at most three per employer shown.
What systems engineer adverts in the United States state
Middle half: 139,875 – 193,000 USD a year; median 168,250 USD.
From 450 adverts by 133 employers that state a salary, annualised.
How systems engineer roles in the United States are worked
3% fully remote · 2% hybrid · 95% do not say
Of 150 adverts. An advert that does not state a work mode is counted as not saying, not as on-site.
Other roles at Mobius
- RCOH SQL Developer - Database Administrator · Newport News
- Aegis Based Defense Test Engineer · Dahlgren
- Intermediate Ground Test Engineer · Huntsville
- Senior Systems Engineer · Fort Belvoir
- Systems Engineer · Colorado Springs
- Advanced Engineer · Huntsville
10 open.