Senior Full-Stack Developer Wanted

* Senior Full-Stack Developer Wanted: Build the MVP for PRESTIA AI

We are seeking an elite, execution-focused Senior Full-Stack Developer to build the Minimum Viable Product (MVP) for PRESTIA AI—a high-converting SaaS platform featuring a dynamic sales, payment, and post-purchase upsell engine.

* Required Tech Stack

We maintain strict engineering standards. You will develop directly on our infrastructure using:

Framework: [login to view URL] 14 (App Router) + TypeScript

Styling & UI: Tailwind CSS (Unified, high-converting interfaces with full RTL/English support via next-intl)

Database & Backend: Supabase (PostgreSQL, Auth, RLS, Webhooks)

Payments & Billing: Stripe (Checkout, Tokenization/Setup Intents, Webhooks) + PayPal Vault

Hosting & Version Control: Vercel + GitHub (Direct execution on the owner's accounts)

Note: WordPress, Elementor, Bootstrap, or pre-built legacy templates are strictly prohibited. We build modern, serverless web applications.

* MVP Scope of Work

1. High-Converting Page Architecture (3 Core Layouts)

Landing & Solutions: Home Page + Core Solutions Showcase.

Sales Funnel Engine: Pricing + Checkout + Multi-Step Upsell/Downsell + Thank You Page.

Legal & Compliance: Dynamic Legal Pages Template (Terms, Privacy, Refund Policy).

2. Plans & Subscription Management

Configure 3 core subscription tiers (Starter / Growth / Enterprise).

Support for flexible Monthly / Yearly billing cycles in USD.

3. Dynamic Sales & Checkout Engine

Order Bumps: Program 3x distinct, real-time Order Bumps directly on the checkout screen.

1-Click Post-Purchase Upsells: Build a dynamic upsell/downsell engine supporting sequences of up to 10–15 steps without re-entering card details (leveraging Stripe Tokenization / Off-Session Payment Intents).

4. Integrations, Security & Backend

100% server-side payment processing and robust Stripe webhook event handlers.

Secure Supabase synchronization for accounts, order histories, and active subscription state management.

* Delivery & Quality Standards

Environment: Direct commits and deployment on our official GitHub repository and Vercel project.

Documentation: Clean, modular TypeScript code with a clear [login to view URL] explaining setup and architecture.

Verification: A 5–10 minute Loom video walkthrough proving test purchases, 1-click upsell routing, and secure Stripe webhook processing in test mode.

* Payment Milestones & Warranty Terms

Payments will be released via escrow structured across 3 core milestones:

MilestoneDeliverablesTimelineEscrow ReleaseMilestone 1Stripe integration finalized + Front-end interfaces connected15 Days25%Milestone 2End-to-end testing, bug fixes, and final production delivery15 Days50%Milestone 3Completion of the 180-day Warranty Period180 Days25%

* 180-Day Comprehensive Warranty: Includes full bug fixing with a guaranteed response time of 24–48 hours post-launch.

* Application Requirements

To apply, please provide the following details:

Links to 3 LIVE projects you built using [login to view URL] + Stripe Checkout / Tokenization.

Your proposed Fixed Budget ($___).

Your confirmed Delivery Timeline (___ Days).

Explicit confirmation of your agreement to the 180-day warranty terms.

* Proposals that do not meet all required criteria or miss live project links will be automatically disregarded.

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來源：Freelancer.com | 出價次數：110 | 剩餘時間：6 日 | 專案類型：固定預算