We are looking for a highly technicalSenior Backend Engineerto design, build, and scale robust, distributed, multi-tenant backend systems in high-performance production environments.This role is focused on real backend engineering, system architecture, and full ownership across the development lifecycle — from technical design to production deployment.You will work closely with Product, AI, and Platform teams to build scalable and resilient backend infrastructure capable of supporting real customers and large-scale event-driven systems.What You'll BuildProduction-grade scalable REST APIsMulti-tenant architectures with secure data isolationHigh-availability distributed systemsEvent-driven and webhook-based pipelinesBackend integrations with AI/ML servicesUsage-based billing and credit systemsScalable backend infrastructure on AWSKey ResponsibilitiesDesign and implement scalable backend services using Node.js and TypeScriptBuild REST APIs consumed by external customersDesign secure mu...