Full-Stack AI Engineer — Early-Stage Logistics SaaS

building an early-stage SaaS product in the international freight/logistics space and am looking for a strong full-stack engineer with practical AI/LLM experience to help build the first version. I'm the founder of an international freight forwarding company and have been in the industry for many years. This is a separate new venture based on problems I've seen firsthand. The product will work with messy real-world freight data — including quotes, invoices, shipment data, PDFs, Excel files and emails — and use AI + traditional software logic to turn that information into useful, actionable insights. What I'm looking for Someone who can independently build an early SaaS product end-to-end, including: Python/backend development React/Next.js/TypeScript or similar frontend PostgreSQL/databases LLM/API integrations Structured data extraction from PDFs, Excel and emails Document processing and normalization Authentication and multi-tenant SaaS architecture APIs and third-party integrations Deployment/cloud infrastructure I'm not looking for someone who only builds ChatGPT wrappers or basic AI automations. You should be comfortable taking a business problem, discussing it with a non-technical founder who knows the industry extremely well, and figuring out the best technical solution rather than waiting for detailed specifications. Initial engagement I'd like to start relatively small — approximately 10–15 hours/week — and build the product iteratively. If we work well together, this could become a significant long-term role as the company develops. When applying Please send me: One SaaS product you've personally built or played a major engineering role in. An example where you've used AI/LLMs to extract or reason over messy documents/data. Your preferred technology stack and why. Your hourly rate and weekly availability. A short explanation of how you would approach turning inconsistent PDFs, spreadsheets and invoices into reliable structured data. Please start your application with the word FREIGHT so I know you've read the full description. No agencies, please.