Full-Stack Next.js Developer Needed for a Short Task (3–4 Hours) – OpenAI / Stripe

We have a live AI-powered web app built with React, Next.js, Node.js and TypeScript. We need an experienced developer for a small, well-defined task that should take about 3–4 hours. The task: Get familiar with the relevant part of our existing codebase Investigate and resolve a frontend/backend bug affecting the live app Check and fix issues in our OpenAI integration or Stripe payment/webhook flow Make sure the fix works reliably in production and doesn’t break existing features Share a short summary of what was changed and why Scope and budget: Fixed price: $100 Estimated time: 3–4 hours Deliverable: working fix tested on our staging or production setup, with a short note explaining what was changed Tech stack: React, Next.js, Node.js, TypeScript, OpenAI API, Stripe, PostgreSQL, AWS What we’re looking for: Solid experience with React, Next.js, Node.js, and TypeScript A track record of building and maintaining full-stack applications Hands-on experience with OpenAI and Stripe APIs Good knowledge of REST APIs and frontend state management Confidence working in an existing codebase Strong debugging skills across frontend and backend Ability to work independently and communicate progress clearly Can start within 1–2 days Additional experience we’d value: PostgreSQL or other relational databases SaaS and AI-powered applications Cloud hosting and deployment Troubleshooting and supporting live products When applying:  Please share 2–3 SaaS projects you’ve worked on using React or Next.js, Node.js, and TypeScript, ideally with OpenAI and Stripe integrations.  For each project, include a live link if available, the technologies used, and a short explanation of what you personally built or maintained.