Senior Full-Stack SaaS Developer Needed for Transportation Industry Platform

We're seeking an experienced full-stack developer or small development team to build an MVP for a transportation and logistics software platform similar in function to www.superdispatch.com The platform will include: User accounts and authentication Customer dashboard Driver/mobile web portal GPS location tracking Photo uploads and document management Digital signature capture SMS notifications Payment processing Admin dashboard Reporting and analytics Preferred Technologies Next.js / React Node.js PostgreSQL Twilio Stripe Google Maps API Alternative stacks may be proposed Deliverables Please provide: Similar SaaS platforms you've built Logistics, transportation, or marketplace experience Estimated timeline Ballpark budget Team structure Examples of dashboards you've developed Question: Describe a SaaS platform you've built that included GPS tracking, document uploads, user dashboards, and payment processing. What technology stack did you use? Budget $15,000–$50,000 (Fixed Price)