Senior Full Stack Developer for SaaS Platform in Logistics & Transportation

We're building a SaaS platform for a transportation/logistics company and looking for a senior Full Stack developer who can become part of our small team. The product helps companies manage shipments, drivers, customers, and day-to-day operations in one place. We already have the product idea, detailed requirements, and Figma designs. Most of the backend architecture is still open for discussion, so we'd like someone who can also suggest better technical solutions, not just follow tasks. The stack we're planning to use is React, Next.js, Node.js, TypeScript, PostgreSQL, and REST APIs. Experience with real-time updates, dashboards, notifications, maps, or third-party API integrations would be a big plus.This is not a quick landing page or a simple CRUD app. There are different user roles, dashboards, reporting, workflows, and quite a few business rules. If you've built operational SaaS products before, we'd love to hear about them. We're looking not just for a dev - we’re looking for a reliable technical partner.