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SaaS Developer — Bathroom360 Platform (React, Supabase)
ABOUT BATHROOM360 Bathroom360 Ltd is a UK-based technology startup building a vertical SaaS platform for the bathroom installation industry. Our platform takes a bathroom installer seamlessly from first customer contact through to invoicing and aftercare — survey, floor plan, 3D visualisation, quotation, building regulations, scheduling, and payment — in one connected cloud platform. We are seeking an experienced full-stack developer to build Version 1.0 of the Bathroom360 platform, ready for showcase at London Build Expo, Olympia, November 2026. A full Product Blueprint is attached to this posting. Please read it before submitting your proposal. Proposals that do not reference the Blueprint will not be considered. --- THE PROJECT We require a complete SaaS platform built to the specification in the attached Bathroom360 Product Blueprint. The platform serves three customer segments: independent bathroom installers, bathroom showrooms, and white-label partners. The platform includes 15 modules: company onboarding, customer CRM, bathroom survey, floor plan designer, 3D visualiser, finishes and tile specification, supplier product library, quotation engine, building regulations guidance, job scheduling, installation workflow, snagging and sign-off, invoicing and payments, aftercare and warranty, and an AI assistant powered by the Anthropic Claude API. --- TECHNOLOGY STACK REQUIRED The Blueprint specifies the following technology stack. You must have demonstrable experience with all of the following: - React and Next.js — frontend framework - Supabase — database, authentication, storage, and edge functions - Three.js — 3D bathroom visualisation - Tailwind CSS — styling - Stripe — subscription billing - Resend — email delivery - Anthropic Claude API — AI assistant integration - Vercel — hosting and deployment --- WHAT WE ARE LOOKING FOR - A developer or small team with a portfolio of completed SaaS projects - Demonstrable Three.js experience — please include examples of 3D work in your proposal - Experience building multi-tenant SaaS platforms with Supabase row-level security - Strong communication in English — this is a collaborative project requiring regular updates - UK-based or UK timezone working hours preferred --- PROJECT STRUCTURE This is a fixed-price project with milestone payments. We do not pay hourly and we do not pay the full amount upfront. Payment is structured as follows: - 25% on project start and infrastructure setup - 25% on completion of Phase 1 modules (survey, floor plan, 3D, quotation, PDF) - 25% on completion of Phase 2 modules (supplier library, invoicing, scheduling, AI) - 25% on final delivery, testing, and Expo readiness sign-off --- TIMELINE - Development start: August 2026 - Phase 1 complete: September 2026 - Phase 2 complete: October 2026 - Final delivery and testing: November 2026 - Showcase: London Build Expo, Olympia, November 2026 --- WHAT YOUR PROPOSAL MUST INCLUDE We will not respond to generic proposals. Your proposal must include: 1. Confirmation that you have read the attached Product Blueprint 2. Your fixed-price quote for the complete Version 1.0 build 3. Links to at least two previous SaaS projects you have built 4. At least one example of Three.js or 3D web work you have completed 5. Your proposed delivery timeline with milestones 6. Any questions or concerns about the specification --- ABOUT THE COMPANY Bathroom360 Ltd is founded by Pamella Edwards — a qualified plumber, heating and gas engineer, and Triple-Appointed London Build Ambassador for Women in Construction, Diversity in Construction, and Sustainability in Construction. The platform is built on deep industry expertise and a clear commercial model with three revenue segments. We are a serious business with a clear vision, a detailed product specification, and a confirmed showcase event. We are looking for a developer who is equally serious and can deliver to a professional standard. Please attach your proposal and we will respond within 48 hours. Bathroom360 Ltd
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