Designed and delivered a large-scale multi-tenant SaaS platform used by international enterprise clients to manage complex operational workflows. I architected the backend using Laravel (PHP) and built asynchronous services with Node.js to handle high-concurrency operations and event-driven processes. The platform includes real-time dashboards, advanced analytics, and Elasticsearch-powered search across large datasets. I also led the migration from Angular to Vue.js with TypeScript and Inertia.js, significantly improving frontend performance, SEO, and developer productivity.