Senior Software Architect in Huntsville, Alabama (contingent upon award) to lead development of software architectures supporting Navy HPTE systems, with emphasis on PLC-based control environments. The candidate will define modular, scalable software architectures and ensure integration with system architecture in a simulatable manner using MagicDraw / Cameo Systems Modeler. Responsibilities - Lead software architecture design for control systems, integration layers, and mission applications - Architect and integrate PLC-based systems (e.g., Rockwell, Siemens) into software environments - Define interfaces for real-time control, telemetry, and system coordination - Develop UML-based architecture models in Cameo Systems Modeler - Ensure software architecture integrates with system architecture in a simulatable fashion Required Qualifications - Active DoD Secret clearance - Bachelor's degree in Software Engineering, Computer Science, or related field - 10+ years of software architecture experience - Ability and willingness to upgrade from secret to TS clearance Technical Skills - Experience with PLC systems (Rockwell, Siemens, or equivalent) - Proficiency in Model Driven Architecture (MDA) - Hands-on experience with MagicDraw / Cameo Systems Modeler - Strong UML modeling capability - Experience with APIs, middleware, and distributed systems - Familiarity with containerization and DevSecOps Preferred Qualifications - Familiarity with test systems or high-power/RF environments - Experience leveraging LLMs across wide range of classification levels - Understanding of MOSA principles Clearance: - Must have an active Secret Security Clearance