Lead Systems Engineer - RF Systems

About Leidos Leidos is a FORTUNE 500® company bringing a mix of innovative technology and sector expertise to customers in the national security, engineering, and health industries. We deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. Guided by our Mission, Vision, and Values, Leidos empowers its teams, contributes to its communities, and operates sustainably—always with a commitment to doing the right thing for our customers, our people, and our community. The Leidos Intel Sector combines technology-enabled services and mission software capabilities to support Intelligence Community customers as they address evolving national security challenges. About the Opportunity Leidos is seeking a highly experienced Lead Systems Engineer – RF Systems to plan and lead systems engineering activities supporting complex mission capabilities. You will translate user needs, Concepts of Operations (CONOPS), and high-level architectures into well-defined system requirements while providing technical leadership across design, integration, verification, implementation, and lifecycle engineering activities. In this role, you will work across hardware, software, facilities, personnel, security, and operational considerations to maintain the technical integrity of complex systems. You will collaborate with Government stakeholders, developers, engineers, program personnel, and senior leaders to resolve technical issues, evaluate alternatives, manage interfaces and requirements, and guide engineering activities supporting mission delivery. Why This Role Matters Complex RF and mission systems depend on disciplined systems engineering to keep requirements, architectures, interfaces, technologies, and operational needs aligned throughout the system lifecycle. As a Lead Systems Engineer – RF Systems, you will bring extensive engineering judgment to that challenge—helping ensure requirements remain traceable, interfaces are fully defined, technical risks are understood, system baselines remain controlled, engineering decisions consider lifecycle impacts, and solutions can be verified against mission requirements. What You'll Do Requirements Engineering & Management Analyze user requirements, CONOPS, and high-level system architectures to develop system requirements specifications. Guide users and stakeholders in formulating requirements, evaluating alternative approaches, and assessing technical feasibility. Manage system and derived requirements to support delivery of production systems compatible with defined system architectures. Assist in developing system and functional requirements and allocating them to hardware, software, facility, and personnel components. Derive lower-level requirements from higher-level allocated requirements and ensure they are complete, correct, unique, unambiguous, realizable, and verifiable. Identify functions implied by system requirements and stakeholder needs that are essential to overall system effectiveness. Establish disciplined requirements-change processes that evaluate impacts before commitment, maintain traceability to source requirements, reduce ambiguity, gain stakeholder agreement, and track resulting actions. Develop derived security and Information Assurance requirements addressing confidentiality, integrity, non-repudiation, availability, identification, authentication, access control, accountability, and applicable security mechanisms. System Architecture & Design Analyze system requirements and lead design and development activities. Develop system architecture and system design documentation. Generate alternative system concepts, physical architectures, and design solutions. Develop and implement system design alternatives that consider lifecycle cost, reuse, complexity, technical risk, system expansion, and future growth. Develop system design solutions that satisfy system requirements and functional analyses. Use validated models, simulations, and prototypes to mitigate technical risk and reduce system-development cost. Develop operational scenarios and threads describing interactions among the system, users, and operating environment across operational, support, maintenance, and disposal needs. Incorporate new plans, designs, and systems into ongoing operations. Interface Engineering & System Integration Participate in interface definition, design, and configuration changes among affected organizations and technical teams throughout the system lifecycle. Fully define software interfaces in terms of origination, destination, stimulus, and data characteristics and hardware interfaces in terms of applicable electrical and mechanical characteristics. Capture interface designs using common interface-control formats and maintain interface information in accessible repositories. Establish and follow formal procedures for coordinating system integration activities across multiple teams and ensuring complete interface coverage. Improve integration strategies using lessons and rationale from previous engineering decisions and integration performance. Provide technical direction for development, engineering, interfacing, integration, and testing of components within complex hardware/software systems. Coordinate resolution of cross-discipline action items resulting from Configuration Control Boards (CCBs), design reviews, program reviews, and test reviews. Participate in Integrated Product Teams (IPTs) developing new capabilities based on development and operational considerations. Technical Baseline & Configuration Management Establish and support approval of system or component definitions—including requirements, designs, interfaces, and test procedures—to provide a common technical reference for hardware and software developers. Manage and maintain the technical integrity of the system baseline as changes are introduced