System Architect — MDDI / MBSE with Security Clearance

Job Description
Serve as a senior system architect on the JTMS platform, applying CACI’s Model-Driven Design and Implementation (MDDI) methodology and Model-Based Systems Engineering (MBSE) practices to the S/4HANA-anchored enterprise architecture. Translate joint transportation business processes and architectural intent into authoritative system models that drive design, integration, and verification across the program’s release trains — aligned with DoDI 5000.97 Digital Engineering direction. Key responsibilities

• Apply CACI MDDI methodology to capture target business processes, system architecture, requirements, and interfaces in a single authoritative system model (Systems Architecture Model / SAM). • Develop and maintain MBSE artifacts using SysML or equivalent (e.g., Cameo Systems Modeler, Capella, or Rhapsody) covering structure, behavior, requirements, and parametric views of the JTMS platform. • Translate business architecture into S/4HANA configuration intent: data model, integration topology, and process flow across FI/CO/FM, MM, SD, GTS, and Transportation Management modules. • Lead integration architecture across REST/SOAP services, enterprise messaging (Kafka or equivalent), API gateways, and the JTMS canonical data model bridging dozens of legacy DoD logistics interfaces. • Align the architecture to DoDI 5000.97 (Digital Engineering), RMF / NIST 800-53 control families, Zero Trust principles under NIST 800-207, and DoD SRG IL4/IL5 hosting constraints. • Govern architecture decisions and trade studies across the program’s Agile Release Trains; lead architectural runway planning, model-driven verification approaches, and architecture review boards. • Mentor functional, integration, and DevSecOps engineers in model-driven design discipline; produce and curate architecture documentation aligned to the program’s configuration management standards. Required qualifications

• U.S. citizenship with an active DoD Secret clearance or the ability to obtain one (we will sponsor eligible candidates). • 7+ years designing enterprise, system, or solution architectures for large-scale IT programs in DoD or comparable regulated/enterprise environments. • Demonstrated systems-engineering capability: you can decompose a complex system and model its structure, behavior, interfaces, data, and end-to-end mission/business threads with full traceability — independent of any single tool. • Working proficiency with a SysML/UML modeling approach in a recognized tool (e.g., Cameo Systems Modeler / MagicDraw, Sparx EA, Rhapsody, GENESYS, or similar), plus familiarity with an architecture framework such as DoDAF or UAF. • Strong communication skills, including technical briefings and architecture documentation for executive and senior military audiences. • Aptitude and motivation to deepen MBSE and digital-engineering skills, with support from our digital-engineering community of practice. • Bachelor’s degree in Systems Engineering, Computer Science, Engineering, Information Systems, or a related technical field — or equivalent professional experience. Preferred qualifications
• Active DoD Secret clearance. • 5+ years of hands-on MBSE / digital engineering in complex system-of-systems environments. • Master’s degree in Systems Engineering, Enterprise Architecture, or a related field. • Direct experience supporting USTRANSCOM, DoD logistics, transportation, supply chain, or ERP modernization programs. • Experience generating technical documentation, reports, and deliverables directly from system architecture models. • Experience architecting solutions that integrate COTS/ERP platforms with custom DoD systems. • Ability to extend MBSE tool capabilities through scripting, APIs, or plugins. • Familiarity with digital twin, digital baseline management, and AI/ML integration within MBSE frameworks. • Experience with cloud-based architectures, DevSecOps pipelines, or zero trust in DoD environments (AWS GovCloud, IL4/IL5). • Knowledge of the DoD acquisition lifecycle, JCIDS, and business process reengineering in enterprise transformation. • Certifications such as OCSMP, INCOSE CSEP/ESEP, TOGAF, SAFe, or AWS/Azure architecture credentials.