Peraton is seeking a high-impact Senior Software Engineer (SWE) with proven experience designing, building, and sustaining front-end and full-stack capabilities for RF SIGINT collection, processing, and visualization systems. This is a senior technical contributor role supporting critical national-level operations. The ideal candidate brings deep technical mastery, understands mission operations, and can lead teams in delivering secure, high-reliability software for complex signal intelligence environments. You will architect, develop, modernize, and sustain advanced UI/UX components and support services for SIGINT operations, integrating real-time RF data flows, analytics, and mission tools into intuitive operational interfaces. This role directly impacts operators and analysts working in time-sensitive mission environments.