Senior Software Engineer — EMNS PlatformHQE Systems

Build and scale the SMART Electronic Mass Notification System (EMNS) — the software that fires outdoor warning sirens, indoor alerts, and multi-channel notifications the moment seconds matter. You'll own life-safety-critical paths across a real-time Node.js/React stack with mapping, device telemetry, and military-grade encryption. What you'll do • Design fault-tolerant alert-dispatch services where "eventually" is not an option. • Build the operator consoles emergency managers rely on under pressure. • Integrate siren / High-Powered Speaker Array hardware and standards like IPAWS/CAP. • Own reliability, observability, and testing for mission-critical flows. What we're looking for • 5+ years full-stack (Node.js + a modern JS framework) shipping production systems. • Real-time / event-driven architecture and a genuine reliability mindset. • Bonus: GIS/mapping, WebSockets, or government / defense software experience. • U.S. person; ability to obtain a U.S. security clearance is a plus.