Backend Setup for Health care Self-Assessment Online website

I am seeking a proficient tech specialist to establish the backend infrastructure for my online self-assessment service as a UK-registered Occupational Therapist. This one-time setup includes the creation of a streamlined, secure website compliant with UK GDPR regulations. The project entails developing a landing page site featuring a service offer, CTA button, and trust badges. Additionally, a quiz funnel must be constructed to securely collect responses, the the self assessment with integrated payment processing via Stripe/ or other suitable payment system. Automations and workflows will connect submissions to email lists and payment confirmations. Furthermore, a report template and analytics tracking setup are required, ensuring all legal compliance and data protection measures are in place. This is just a guide and will be looking for someone with experience of setting up similar.