Prestia AI Platform: Next.js Full-Stack Developer

Hiring: Senior http://Next.js Full-Stack - PRESTIA AI Platform *Fixed Price | 30 Days | 180-Day Warranty | 100% Measurable Delivery* *We don't hire coders. We hire a technical partner who can ship money.* PRESTIA AI is a secure, high-conversion B2B SaaS for US + GCC markets. Built to sell from Day 1. If you have shipped real Stripe funnels with Upsells that actually charge , this is for you. *Contract: All-inclusive fixed price. No hidden costs. No WordPress. No Templates.* *1. WHAT YOU WILL DELIVER - Measured, Not Promised* *A. 6 Templates = 10 pages + 18-22 Funnel Paths:* Home / Solutions / Assessment [with revenue calculator] / Funnel [Pricing + Checkout + Thank You + 6x Upsell] / Content / Legal *B. 5 Packages [Configurable via JSON]:* 1. ACQUIRE 2. CONVERT 3. REVENUE STARTER 4. REVENUE SCALE 5. REVENUE ENTERPRISE Monthly/Annual toggle [20% saving] + 4 currencies USD/SAR/AED/EGP + EN/AR full RTL *C. Sales Engine - The Money Part:* 30 Add-on Services + 5 Order Bumps [Live Total] + 10-15 conditional flows per package [Upsell / Downsell / One-Click where supported] Total 28-30 Upsells controlled from `funnel.json` *2. MANDATORY STACK - Non-Negotiable* http://Next.js 14+ App Router + TypeScript + Tailwind + Supabase [Auth + RLS + Migrations] + Stripe + PayPal Vault + OpenAI + GHL + Vercel + GitHub *Banned:* WordPress, Elementor, Bootstrap, ThemeForest *3. SECURITY CHECKLIST - Must Pass Before Final Payment* - Price verification on SERVER only - Browser price manipulation must fail - Webhook signature verification + Idempotency - Duplicate events must not create duplicate orders - RLS enabled - Customer A cannot see Customer B data - No card numbers / CVV stored - All secrets in server env only *4. 10 ACCEPTANCE TESTS - Your Payment Depends On This* You must deliver Loom videos proving Pass/Fail for each: 1. Auth + RLS: Login + Role isolation 2. Pricing: 5 packages + Monthly/Annual + 4 currencies correct 3. Assessment: Calculation + Supabase Save + GHL sync <5s 4. Checkout: Stripe 4242 + 2 Bumps = Total updates live 5. PayPal: Vault / Billing authorization flow 6. Webhooks: Valid accepted, invalid rejected, duplicate blocked 7. Funnel: One-Click Upsell without card re-entry [Stripe off_session] 8. Logic: Reject 2 Upsells = Show Downsell 9. Failures: Card 4000000000000002 fails gracefully, no fake order 10. Handover: Code in OWNER GitHub/Vercel + README + .env.example + Migrations *No Loom proof = No milestone.* *5. DELIVERY & OWNERSHIP* *Timeline:* 30 calendar days - Milestones: Day 5 [Templates+RTL] 40% / Day 15 [Payments+Funnel+GHL] 40% / Day 30 [Prod+Tests] 20% *Progress:* 3 Loom videos / week - No video = No progress *Ownership:* From Day 1, all code, Supabase, Vercel, GitHub in owner accounts. There is no dependency on your account. *Warranty:* 180 days free bug fix for agreed scope. Critical bug: acknowledge in 24h, fix in 48h. 6.

HOW TO APPLY

— PROOF REQUIRED Incomplete proposals will be rejected. Include all the following: Scope: “I agree to 6 templates + 5 packages + 30 upsells + 10 acceptance tests.” (Yes/No) Fixed Total Price: $____ (all-inclusive, no extra charges) Payment: 50% upfront, 50% after passing acceptance tests Timeline: ____ calendar days Warranty: 180 days (Agree/Disagree) 3 Live Projects: URLs + your role + payment/funnel proof Loom Demo: Webhook verification, idempotency, and Checkout → Upsell flow Exceptions: None / Specify We prioritize proven Stripe payment-funnel experience. Owner accounts, API keys, and content are ready. Apply with verifiable proof, not promises.