Model-Based Systems Engineer (MBSE)

This position requires active U.S. national security clearance and the ability to obtain one. To learn more about the security clearance process please access this link. Additionally, travel may be required to customer and subcontractor sites as well as other office locations.

This position is with Highbury Defense Group, an Accelint company. Accelint is dedicated to delivering mission-critical technology and defense solutions that accelerate innovation, readiness, and national security outcomes.

We provide technical, cybersecurity, logistics, and program management support to US Department of Defense (DoD) and Department of State (DoS) agencies and select foreign governments and militaries.

Our experience spans decades of operational and strategic support to the DoD, DoS, US Navy, USMC, USAF, and US Army. Our people range from retired and separated military to seasoned defense contractors to new grads. Our success stems from our drive to always provide objective, effective, and cost-efficient advice and solutions to our customers.

We are seeking a highly motivated Model-Based Systems Engineer (MBSE) to support a variety of Department of Defense (DoD) and Department of Navy (DoN) Communications and GPS Navigation programs. The ideal candidate will bring deep expertise in MBSE methodologies, tools (such as Cameo/MagicDraw), and DoD acquisition processes to develop and maintain digital system models throughout the system lifecycle. This role requires the ability to work closely with cross-functional teams, customers, and stakeholders to ensure system design integrity and compliance with government standards.

Develop and maintain system architecture models using SysML and MBSE tools (e.g., Cameo/MagicDraw, Rhapsody, Enterprise Architect)

Facilitate the development of Black Box and White Box models in accordance with DoD and NAVWAR standards

Work closely with program engineering teams to develop questionnaires to identify what data is available for each program that can feed into a model, then help match programs with the appropriate MBSE automation tool(s) and enter data into the appropriate MBSE tool.

Integrate MBSE approaches with traditional systems engineering practices and digital engineering frameworks

Translate stakeholder requirements into system models and technical specifications

Participate in or lead technical reviews, model-based design efforts, and system verification/validation planning

Collaborate with software, hardware, and integration teams to align models with implementation and testing

Support DoD acquisition documentation and milestone reviews (e.g., SRR, PDR, CDR)

Ensure models comply with DoD standards (e.g., DoDAF, UAF, MIL-STD-881, NIST 800-160 Vol 1/2)

Prepare technical documentation and present modeling results to stakeholders, including government clients

Maintain configuration control of models and support versioning and reuse strategies

Requirements

Required Qualifications:

5+ years of experience in systems engineering with at least 2 years in MBSE roles.

Proficiency in MBSE tools such as Cameo/MagicDraw, Rhapsody, or Enterprise Architect.

Experience with Black Box and White Box modeling and development.

Experience with SysML and formal modeling techniques including Black and White Box Models.

Familiarity with DoD systems lifecycle (DoDI 5000.02, JCIDS, etc.) and C4I engineering processes.

Experience supporting DoD programs (Army, Navy, Air Force, Space Force, or OSD).

Active Secret clearance required.

Bachelor's in systems engineering, Aerospace, Electrical Engineering, Computer Science, or a related field.

Clearance Information: Some positions will require access to U.S. National Security information. Positions that require this access will be required to receive and maintain a U.S. government personnel security clearance (PCL). In order to qualify for this position, the candidate must be a US Citizen and either currently possess this National Security eligibility or be able to complete the investigation application process with a favorable determination and maintain that eligibility throughout their employment.

EEOC & Know Your Rights: Accelint companies are Equal Opportunity Employers. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, disability, status as a protected veteran or any other status protected by applicable federal, state, and local law. We ensure that all employment decisions, including hiring, promotion, compensation, and other terms and conditions of employment, are based on merit, qualifications, and business needs. For more information about your rights, please review the "Know Your Rights" poster from the Equal Employment Opportunity Commission (EEOC).

ADA: In compliance with the Americans with Disabilities Act (ADA), if you have a disability and would like to request an accommodation within the application and selection process, please contact .

E-Verify: Accelint companies utilizes E-Verify to confirm employment eligibility to work in the United States. Verification occurs after the employee has been hired and completes the Form I-9.

Salary Range: $120,000-159,871. The listed pay scale reflects the broad, minimum to maximum, pay scale for this position for the location for which it has been posted and is not a guarantee of compensation or salary. Other compensation considerations may include, but are not limited to, job responsibilities, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, or other applicable factors.

Benefits include:

Paid Time Off

Paid Company Holidays

Medical, Dental & Vision Insurance

Optional HSA and FSA

Base and Voluntary Life Insurance

Short Term & Long-Term Disability Insurance

401k Matching

Employee Assistance Program