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Senior Full-Stack Developer — SaaS Completion, AI Integration and Production Hardening (Next.js + Stripe + AWS) -

Senior Full-Stack Developer — SaaS Completion, AI Integration and Production Hardening (Next.js + Stripe + AWS) -

Pending
💰 USD 250–750 👤 Unknown 🕒 15d ago status: new
Redis Full Stack Development API Development Microservices Next.js FastAPI SaaS AI Development
PROJECT OVERVIEW This project is NOT starting from scratch. Video : Control panel ; https://drive.google.com/file/d/1xQQGoJxcsIBVkmCytRbVdKQ9EsxtmUgo/view?usp=sharing Mobile - PWA ; https://drive.google.com/file/d/1MY71TGXLgfl9bKBaoKUtPA5ZWU6hbxVQ/view?usp=sharing Client panel ; https://drive.google.com/file/d/1HjiQxMh4jQyEx4X3aJTL8rr-8hcXxxr-/view?usp=sharing service provider panel ; https://drive.google.com/file/d/1x3nIlapHLC-zfc4tpauxuRvmRuz1eDim/view?usp=sharing The system is built on SaasPilot, which already provides: Full authentication system Stripe payment integration SaaS architecture foundation Scalable structure Database integration Email and storage systems Additionally: The entire UI/UX design is 100% completed and validated (Figma) A functional codebase already exists Core integrations are already in place The project is currently in the phase of: Finalization, correction, and production readiness. CURRENT PROJECT STAGE Based on technical analysis: System is structurally built Frontend is 70% to 80% complete Backend is partially functional Core integrations are already started Main workflows are already defined Real status: “Advanced system, but incomplete and not yet production-ready” WHAT ALREADY EXISTS (DO NOT REBUILD) 1. SaaS Base (SaasPilot) Full authentication (login, OAuth, sessions) Stripe integration (checkout, subscriptions) Prisma ORM configured Structured database (PostgreSQL or MongoDB) Email system S3 storage integration Deployment ready (Vercel) 2. Frontend (Next.js + UI) Approximately 70% to 80% completed: Landing page Dashboards (admin, user, provider) Authentication system Subscription pages Marketplace interface Bidding interface User management Account settings Design is already defined and must not be structurally redesigned. 3. Backend (Partial) Already implemented: Prisma schema with core models API routes created Functional backend structure Initial certification logic Marketplace routes Dashboard statistics 4. Functional Structure (Already Defined) AI Certification Initial structure exists Workflow defined Marketplace Listing structure created Partially implemented Bidding System Initial structure created Workflow defined Payments Stripe integrated Webhooks partially implemented 5. Design (100% Completed) Full Figma design All screens defined UX validated Important: Redesign is NOT part of the scope. WHAT IS MISSING (REAL WORK) 1. Fast Technical Audit Validate real code status Identify inconsistencies Map incomplete parts Deliverable: Objective technical report 2. Fix Existing Logic Broken workflows Data inconsistencies Integration issues Main focus: Payments Core flows Frontend and backend synchronization 3. Complete Existing Features AI Certification (Complete) Real AI implementation JSON output Vehicle Integrity Score PDF report with QR code Marketplace (Finalize) Connect with certification Filtering by score Transaction history Fully working flow Bidding System (Finalize) Proposals Selection Execution Completion Reputation system Payments (Fix and Complete) Stripe Checkout Stripe Connect (split payments) Full webhook handling Functional escrow system 4. Full Integration Frontend and backend integration End to end working APIs Removal of mocks and hardcoded logic 5. AI Implementation (Real) Expected architecture: Python with FastAPI Microservices Asynchronous processing using Redis and BullMQ Containerized deployment Suggested APIs: OpenAI or equivalent for image analysis Custom scoring services Important: Fake or simulated AI will not be accepted. 6. Production and Scalability AWS (EC2, S3, CloudFront) Redis (cache and queues) CDN enabled Prepared for autoscaling WHAT IS NOT INCLUDED (SCOPE LOCK) To avoid misinterpretation: Not a new project Not a redesign Not a stack change Not unnecessary full refactoring Not open ended exploration DELIVERY EXPECTATION The system must be delivered: Fully functional Fully integrated Tested Production ready Mandatory: Video demonstrations of real workflows System running in a real environment GOVERNANCE (MANDATORY) Daily commits on GitHub Real progress only Organized pull requests Code must be auditable at any time COMMERCIAL CLARIFICATION This project already includes: SaaS foundation Completed design Advanced codebase Initial integrations Therefore: Pricing must reflect execution and completion, not building from scratch. FINAL POSITIONING This project is for developers who: Can work with existing systems Understand real SaaS architecture Execute quickly and objectively Not suitable for: Beginners Developers who require discovery phases Developers who depend on long meetings to understand scope
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