MVP Web App Development

I am looking for a developer to build the MVP of a new B2B SaaS web application. The MVP consists of a 5-step responsive web flow where a user: - enters a company identifier; - completes a short questionnaire and contact details; - the application retrieves and enriches company information through external APIs; - backend logic combines company data, questionnaire responses and opportunity data to determine eligibility/match scores; - an LLM API is used as part of the matching and result-generation process; - the user receives a ranked results page and a more detailed HTML summary by email; - a final form allows the user to request a deeper assessment. The application will therefore require a combination of frontend development, backend/API orchestration, database logic, rule-based matching and LLM integration. The MVP does not require: - payment/Stripe integration; - user accounts or login; - a customer dashboard or saved-history functionality. Basic production requirements include responsive desktop/mobile behaviour, GDPR-conscious handling of company/contact data, caching of external API results, rate limiting and sensible controls around third-party API usage. The product will initially be in Italian. Detailed specifications covering the screen logic, API fields, matching logic, edge cases and AI implementation will be provided to the selected developer. Future direction — not part of the MVP scope The product is intended to evolve into a broader B2B SaaS platform, potentially including: - guided workflows for completing complex business processes; - ongoing monitoring and reporting; - integrations with corporate systems/ERPs; - payment functionality; - user accounts and dashboards; - a marketplace connecting users with specialist service providers. I am sharing this only so that the technology stack and architecture chosen for the MVP do not create unnecessary limitations for future development. Project requirements I am looking for: - final MVP release by end of August; - complete source-code ownership and handover at the end of the project; - deployment/documentation sufficient for another developer to maintain the application; - at least two structured review/QA points: one during development and one before final release; - a modular architecture that can be extended after MVP validation. When responding, please include: - your proposed technology stack and architecture; - estimated development time; - estimated fixed-price or effort range; - any assumptions that materially affect your estimate; - relevant examples of SaaS products involving API integrations, backend workflows or LLM integrations. I am particularly interested in developers who can make pragmatic MVP decisions without building unnecessary complexity, while keeping the foundations maintainable and scalable. If the collaboration works well, there is a strong possibility of continuing development beyond the MVP. Looking forward to hearing your proposal. Best,