Model Based Systems Engineer, Jr.
Castellum Inc· Defense & Space· Oct 3, 2026 · 25d ago
Patuxent River,, MD, US
Hybrid
Full-time
Junior
$80K–$95K
Job description
JOB SUMMARY
Specialty Systems, Inc. has an opening for a Model-Based Systems Engineer (MBSE) with the below described skills and experience to join our team of technical professionals supporting advanced unmanned air systems. In this position, you will have a high-profile role in the development and application of modern systems engineering practices using model-based approaches in a collaborative, mission-focused environment. Ideal candidates will be motivated, eager to learn, and able to work both independently and within a team setting. As a member of our team, you will experience the professional satisfaction of contributing to innovative systems that support critical mission capabilities.
The Model-Based Systems Engineer supports system architecture development, modeling activities, and technical documentation for advanced unmanned air systems. The position provides hands-on experience applying model-based systems engineering principles in support of engineering teams working across multiple disciplines. This position works closely with experienced engineers and program stakeholders to ensure system designs are well-defined, integrated, and aligned with mission objectives.
RESPONSIBILITIES
• Support Model-Based Systems Engineering (MBSE) activities using commercial MBSE tools
• Assist in developing and maintaining system models using SysML, UML, or similar modeling languages
• Contribute to system and subsystem specifications and technical documentation
• Support requirements development, traceability, and verification activities
• Collaborate with cross-functional stakeholders including engineering, cybersecurity, and logistics teams
• Participate in technical and design reviews
QUALIFICATIONS :
• Bachelor’s degree in a STEM field (e.g., Engineering, Computer Science, Mathematics, Physics)
• Basic understanding of SysML, UML, or similar modeling language
• This role is located at NAS Patuxent River (PAX), MD and offers a hybrid work schedule with 3 days on-site and 2 days remote each week.
• Ability to obtain and maintain a U.S. Secret security clearance
Desired Qualifications
• Prior Model-Based Systems Engineering (MBSE) experience (academic or professional)
• Familiarity with Agile development methodologies
• Experience supporting technical specification development
• Exposure to working with cross-functional stakeholders such as cybersecurity, logistics, test, or sustainment teams
• Active U.S. Secret security clearance
Specialty Systems, Inc. provides equal employment opportunity (EEO) to all employees and applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability status, genetic information, marital status, ancestry, protected veteran status, or any other characteristic protected by applicable federal, state, and local laws and offers equal opportunity for VEVRAA Protected Veterans. Specialty Systems, Inc. will not discriminate against employees and job applicants who inquire about, discuss, or disclose compensation information.
Reasonable accommodation that do not cause an undue hardship on the company may be made to enable individuals with disabilities to perform essential functions, as long as that would not hinder or prevent performance of duties or be of a safety concern.
PHYSICAL DEMANDS:
The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of the job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.
While performing the duties of this job, the employee is required to reach with hands and arms. The employee is frequently required to sit, stand and walk. The employee may be required to move ten pounds and could occasionally lift or move up to twenty-five pounds.
Disclaimer: The listed duties are not intended to serve as a comprehensive list of all duties performed by all employees in this classification, only a representative summary of primary duties and responsibilities.
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