Model‑Based Systems Engineer (Level 3) with Security Clearance

Zachary Piper is seeking a Model

• Based Systems Engineer (Level 3) to join an advanced aerospace engineering team in St.

Louis, MO (Berkeley site) .

This position requires strong Systems Engineering experience , hands-on MBSE/SysML modeling , proficiency with DOORS , and the ability to collaborate across multidisciplinary engineering teams to deliver accurate, integrated, and testable system solutions.

• Develop and maintain SysML models using MBSE tools such as Cameo or MSOSA
• Translate high-level system requirements into detailed, traceable subsystem requirements
• Use DOORS to manage, organize, and maintain requirement baselines and traceability
• Partner with architects, software engineers, hardware teams, and mission systems experts to design and integrate complex system solutions
• Support system architecture definition, interface management, and integration planning
• Participate in trade studies, risk assessments, and milestone technical reviews
• Contribute to verification and validation (V&V) planning for mission-critical and safety-critical systems
• Document system behaviors, relationships, and architecture elements within the MBSE environment
• Work closely with engineering leadership and Subject Matter Experts to ensure consistent application of Systems Engineering best practices Qualifications for the Model-Based Systems Engineer (Level 3):
• Bachelor's degree in Engineering, Physics, Computer Science, Mathematics, or related field
• 5+ years of engineering experience
• 4+ years of Systems Engineering experience
• Hands-on experience with SysML modeling tools (Cameo, MSOSA, or equivalent)
• Experience using DOORS for requirements management and traceability
• Background supporting aerospace, defense, avionics, weapons systems, or other highly complex systems
• Experience with system architecture, interface control, decomposition, and verification planning
• Strong analytical, organizational, and communication skills
• Must be able to obtain a Secret Clearance (active Secret within 24 months preferred) Compensation for the Model-Based Systems Engineer (Level 3):
• Hourly Pay Rate: $57.69/hour
• Benefits: 11 paid holidays, 10 PTO days (contractor) * Location: 100% ONSITE in St. Louis, MO (Berkeley)

Louis MO, Berkeley MO, Onsite Engineering, Model-Based Design, Model Development, Aircraft Integration, Simulation, Engineering Lifecycle, Requirements Baseline, Confluence, Jira, Agile Systems Engineering, Cross-Functional Engineering, Defense Contractor, Combat Systems, Operational Architecture, Functional Architecture #LI-KG2 #LI-ONSITE