We are seeking a senior full‑stack developer (or development team) to build the web version of a new all‑occasion online gift registry and contribution platform. All UI/UX design, branding, layouts, and responsive screens will be fully supplied by me (a graphic designer). Your role is development only — implementing the designs into a fast, scalable, secure platform. A native mobile app will be developed in Phase 2, so experience with React Native or similar frameworks is a bonus. We are also looking for your recommendation on the best tech stack and hosting environment for long‑term scalability, and how to best integrate Mailchimp as our CRM + EDM platform. Platform Overview We are building Sotto — a beautifully designed, all-occasion online wish list and contribution platform for the Australian market. Sotto allows anyone to create a personalised list for any event (wedding, birthday, baby shower, housewarming, honeymoon and more), share it with guests, and receive contributions directly to their bank account. We have conducted a thorough audit of the Australian and global competitor landscape. The gap we are targeting: no platform currently combines all-occasion support, modern design, and smart features (AI, reminders) in one product. Sotto is built to own that space. The brand direction is playful, modern, and polished — similar to a Canva‑meets‑Airbnb feel. Phase 1: Web Platform Development (Designs Provided) User Accounts & Onboarding - Email, Google, and Facebook login - Guided onboarding for event type, date, and profile setup - Dashboard for managing multiple registries - Account settings (profile, notifications) - Registry Creation & Management - Create registries for any occasion - Add items via URL, custom items, cash funds, experiences - Set quantities, contribution targets, and funding status - Mark items as purchased or fully funded - Duplicate or template previous registries Customisation & Branding - Custom registry pages with photos, colours, layouts, fonts - Custom URL slug - Fully responsive build (designs supplied) Contributions & Payments - Guests can contribute without creating an account - Partial and group gifting - Stripe, PayPal, and bank transfer (BECS) integration Contribution messages - Payouts to Australian bank accounts - Transparent fee display Guest Experience - Public registry search directory - Clear funded/remaining amounts - Contribution confirmation emails Admin & Infrastructure - Admin dashboard for users, registries, payouts, reporting - Stripe Connect setup for split payments and payouts - Refund workflow - Transactional email system - Cloud hosting setup (AWS/GCP/Azure) - Australian data residency - WCAG 2.1 AA accessibility - Core Web Vitals optimisation Mailchimp Integration We will be using Mailchimp as our CRM and EDM system. Please advise on: -Best integration method (API, webhook automation, or custom sync) - How to structure user and guest data for CRM segmentation - Automated flows (welcome, reminders, thank‑you follow‑ups) - How to ensure compliance with AU privacy requirements Differentiating Features (Quoted Separately) These features are important to our competitive positioning and should be itemised individually: - All‑occasion architecture and UX logic - Automated guest reminder emails Phase 2: Native Mobile App A full mobile app will follow the web launch but this will come at a later date. Please provide an itemised quote covering the above scope, along with: • Itemised costs by feature area — core platform, payments, smart features, event suite, admin • Recommended technology stack with brief rationale • Proposed timeline from kick-off to launch (MVP Phase 1) • Monthly hosting and maintenance costs post-launch • Your recommended phasing if full scope exceeds initial budget • Examples of comparable platforms you have built