Model- Systems Engineer - Level III

Model-Based Systems Engineer - Level III

Department: IEW&S

Employment Type: Full Time

Location: Aberdeen Proving Grounds, MD

Compensation: $95,000 - $170,000 / year

*** This position is contingent upon ACI’s successful award of the associated government contract. ***

*** All prospective applicants will be contacted to discuss contract timelines, the process associated with hiring for this role, and award decisions progress. ***

We seek an experienced Model-Based Systems Engineer to serve as part of ACI’s Government Programs Team supporting CPE ISW for IEW&S HQs SETA.

• Develop and maintain SysML/UML-based models to support system architecture, behavior, interface definitions, and requirements traceability for ATAK plugins and core functionality.
• Translate stakeholder requirements into functional models that inform software development and integration plans.
• Support system decomposition and definition of component-level interactions across ATAK plugins, core services, and TAK Server interfaces.
• Collaborate with software developers, integration engineers, and program stakeholders to ensure alignment between modeled architecture and software implementation.
• Participate in Agile Scrum ceremonies, technical interchange meetings (TIMs), and design reviews as a representative of the systems engineering team.
• Support verification and validation activities by aligning test cases with modeled requirements and scenarios.
• Contribute to documentation deliverables, including interface control documents (ICDs), system design documents (SDDs), and modeling standards.
• Design and implement network solutions, including LAN/WAN/VPN architectures and secure topologies.
• Troubleshoot complex system and network issues, utilizing both hands‑on diagnostics and automated tools.
• Apply network security best practices to protect systems and data from internal and external threats.
• Write scripts for automation and system management using Python and Power Shell.
• Collaborate on multidisciplinary R&D projects, integrating scientific and engineering approaches.
• Maintain technical documentation including system diagrams, configuration guides, and SOPs.

• Due to the sensitive nature of this work, a Department of War security clearance is required. All applicants must provide proof of U.S. Citizenship.
• Must possess or have the ability to obtain a Top Secret w/SCI security clearance.
• Bachelor's degree in a related field and eight (8) years of experience, or
• Master's degree in a related field and five years of experience.
• Solid understanding of network protocols and services (TCP/IP, DNS, DHCP).
• Hands‑on experience with network operating systems (Windows Server, Linux).
• Proficiency with network design and configuration tools.
• Proficiency with modeling tools such as Cameo Systems Modeler, Magic Draw, or Enterprise Architect.
• Familiarity with AWS services such as EC2, ECS, RDS, and associated cloud architecture.
• Excellent troubleshooting, analytical, and problem‑solving abilities.
• Strong communication and technical writing skills.

• Prior experience with TAK plugin development or TAK Server integration.
• Knowledge of DoD software acquisition lifecycle and digital engineering policy (e.g., DoDI 5000.97).
• INCOSE ASEP or CSEP certification.
• Familiarity with geospatial formats (Geo Package, KML) and tactical messaging standards (Cursor-on-Target).
• Experience supporting proposal writing or technical volume input for federal contracts is a plus.
• Experience in research, systems engineering, or IT infrastructure projects.
• Experience with military software and System of System testing.
• Experience in planning and operating military tactical networking, including battle command platforms and transport layers.

• Competitive salary
• Comprehensive Medical, Dental, and Vision plans
• Group Life and Voluntary Life Insurance plans
• Retirement Savings Plan
• Paid Time Off
• Paid Parental Leave
• Tuition and Professional Development Reimbursement Program