Full Stack Developer for Intelligent SaaS Platform with AI and Integrated Payments --

We are hiring a Senior Full Stack Developer to work on the customization, integration, and evolution of an existing high-performance SaaS platform, focused on automation, artificial intelligence, and recurring payments. Project Deadline: 15 days This is NOT a greenfield project. The platform already has a professional SaaS base in place, with a defined architecture, structured frontend and backend, and initial integrations already implemented. In addition, the complete UI/UX design is finished and will be provided. The role does NOT involve creating architecture, frontend, or backend from scratch, nor redesigning UX. The focus is on implementing new features, adapting existing flows, and evolving the product on top of an established codebase, strictly following the provided structure and design. What Already Exists in the Project A functional and well-organized SaaS codebase Authentication and user management Recurring subscription structure Initial Stripe integration Structured frontend and backend Configured database Defined coding standards and architecture What You Will Do Integrate the provided UI/UX design into the existing codebase, ensuring full visual and UX consistency Adapt and extend existing functionalities Implement new frontend and backend features according to the product scope Integrate and optimize AI modules developed in Python FastAPI Refine subscription, payment, and webhook flows using Stripe Manage database migrations (PostgreSQL + Prisma) Integrate media uploads and storage using AWS S3 Optimize performance, SEO, and Core Web Vitals Prepare the system for production and scalability Tech Stack Frontend: [login to view URL] 15+, TypeScript, Tailwind CSS 4, shadcn/ui Backend: Node.js, NestJS, Python FastAPI (AI modules) Database: PostgreSQL with Prisma ORM Payments: Stripe (subscriptions, webhooks, customer portal) Infrastructure: AWS S3, Resend, [login to view URL], Vercel Mandatory Process Rules (Non-Negotiable) Daily GitHub commits, small, clear, and atomic Large or bulk code submissions will be rejected Massive commits are considered a quality-control and anti-fraud violation Strict compliance with SonarCloud quality standards The project must always be runnable in a test environment End-to-end videos demonstrating each delivered feature Technical documentation must be kept fully up to date Requirements Strong experience with [login to view URL] 15+ Proven experience with Stripe subscriptions and webhooks Ability to work on existing production codebases Clean, well-typed, and reusable TypeScript code Experience deploying and configuring environments on Vercel and AWS Highly disciplined profile, focused on quality, process, and execution Important This role is intended for experienced developers with the maturity to work on existing systems, follow strict processes, and deliver at a high quality standard.

ID do Projeto: 40169516