CesiumAstro is seeking an RF Systems Architect to lead the definition and development of next-generation ISR (Intelligence, Surveillance, and Reconnaissance) RF payloads, with emphasis on radar systems, RF sensing, and wideband signal collection. This role is highly strategic and technical, focused on end-to-end RF payload architecture-from antenna and front-end design through system-level performance, signal processing considerations, and mission integration. The ideal candidate demonstrates deep experience in phased array systems, wideband RF architectures, and space-based sensing payloads. KEY RESPONSIBILITIES • Define and lead system architecture for advanced ISR RF payloads, including radar and RF sensing systems for space and airborne platforms. • Translate mission objectives into end-to-end RF payload architectures, including antenna systems, RF front-end, digitization, and downstream processing. • Drive architectural trade studies across performance, SWaP, scalability, and mission constraints. • Lead concept development for wideband, multi-beam, and multi-function RF payloads, including electronically steered arrays and digital beamforming systems. • Partner with business development to shape technical strategy, support proposals, and secure new program opportunities. • Serve as a Subject Matter Expert (SME) in RF payload architecture, supporting internal reviews and customer engagements. • Guide cross-functional teams through architecture definition, prototyping, and system validation. • Stay at the forefront of emerging ISR, radar, and RF sensing technologies and incorporate advancements into product roadmaps. • Mentor engineers and establish best practices in RF system architecture and payload development. • Communicate complex technical concepts, architectures, and trade-offs to internal stakeholders and external customers. JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS • Master's degree in Electrical Engineering, Physics, or a related technical discipline (advanced degree preferred). • 15+ years of professional experience in RF engineering, radar systems, or RF sensing technologies. • Demonstrated expertise in RF system design fundamentals, including link budgets, noise analysis, and RF propagation. • Strong technical background in phased array antennas, beamforming techniques, and wideband RF systems. • Experience working with RF hardware components such as antennas, LNAs, mixers, ADCs/DACs, and frequency conversion chains. • Proficiency with RF and electromagnetic simulation tools (e.g., MATLAB, ADS, HFSS, CST, or similar). • Solid understanding of radar principles and/or signal processing techniques relevant to RF sensing applications. • Experience in aerospace, defense, or space-based systems environments. • Demonstrated technical leadership experience or progression into senior/architect-level roles. • Strong analytical and problem-solving skills in complex engineering environments. • Effective written and verbal communication skills for technical collaboration. PREFERRED EXPERIENCE • Experience contributing to or leading successful program captures and technical strategy. • Demonstrated innovation, including patents or novel RF/antenna system developments. • Experience in fast-paced, startup, or advanced development environments. $228,000 - $279,000 a year CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate's work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package including health, dental, vision, HSA, FSA, life, disability and retirement plans.