Senior Software Systems Engineer

Company DescriptionFounded in 1989, SOSi is among the largest private, founder-owned technology and services integrators in the defense and government services industry. We deliver tailored solutions, tested leadership, and trusted results to enable national security missions worldwide.Job DescriptionOUSW (R&E) is seeking a highly skilled senior software systems engineer to be the technical lead for a complex project involving the design, development, integration and assessment of complex System of Systems (SoS) architectures for multi-domain autonomous uncrewed platforms (air, surface, and subsurface) in tactical operations over contested radio networks.This role combines software architecture and systems engineering expertise to prototype advanced, multi-domain autonomy, AI-enabled command and control, and distributed system-of-systems operations. The ideal candidate is a trusted advisor and technical expert with experience guiding model-based systems engineering activities, SoS integration, and test activities across virtual, hardware-in-the-loop (HIL), and live experimentation venues.Key ResponsibilitiesLead the development, implementation and evolution of MOSA-aligned SoS architecture to integrate uncrewed platforms across multiple domains.Lead the software integration of advanced autonomy capabilities for mission orchestration, multi-vehicle coordination, and human-supervised command and control of Agentic-AI based solutions from multiple industry partners.Lead the engineering of resilient command, control, and data exchange mechanisms over tactical radio networks (e.g., MANET, Link-16, SATCOM) to ensure operations in degraded, disconnected, or contested environments.Coordinate technical integration across software products from multiple industry partners into vehicle platforms and payloads from other industry partners.Coordinate System Eng & Architecture activities with M&S and test activities on a continuous basis to ensure alignment throughout execution.Serve as a key interface for government stakeholders, industry partners, and technical teams, aligning objectives with OUSW(R&E), Service stakeholders, and transition partners.Provide technical guidance for digital engineering, mission simulation, and test planning activities.QualificationsBachelor's or Master's degree in Computer Science, Systems Engineering, Software Engineering, or a related technical discipline.10+ years of proven experience in software architecture, systems engineering, and integration within the defense aerospace or maritime sectors.Deep working knowledge of unmanned and autonomous systems, cross-domain platform integration, and complex System of Systems (SoS) engineering.Strong understanding of RF communications, tactical data links, mesh networking, and secure communications protocols suitable for defense applications.Cognizant of state of the technology in Agentic AI and multi-agent systems for autonomy capabilities.Experience leading and collaborating with cross-functional teams, including interactions with the Joint Staff, Combatant Commands, Military Services, or OSD organizations.Proven ability to communicate complex technical findings to senior leadership, technical experts, and non-technical stakeholders.Active Top Secret clearance (TS/SCI preferred).Additional InformationWork EnvironmentWorking conditions are normal for an office environment.Fast paced, deadline-oriented environment.May require periods of non-traditional working hours including consecutive nights or weekends (if applicable).Working at SOSiAll interested individuals will receive consideration and will not be discriminated against for any reason.SummaryType: Full-timeFunction: OtherExperience level: Not ApplicableIndustry: Information Technology And Services