Upgrade Node.js and Next.js

We are seeking a skilled freelancer to assist with upgrading our project's technologies. The tasks include replacing node-sass with sass, upgrading Node.js from v12 to v18+, upgrading Next.js to the latest stable version, and upgrading Keystone.js from v5 to v6. The ideal candidate will have experience in JavaScript and Node.js, and be able to efficiently manage these upgrades to ensure smooth project operation. **About the current stack:** - Frontend: Next.js (old version) running on AWS EC2 - Backend/CMS: Keystone.js v5 (Node.js) - Database: MongoDB (self-hosted on EC2) - File storage: AWS S3 - Server: AWS EC2 t3.large (self-managed) **What we need:** 1. Replace node-sass with sass (quick win) 2. Upgrade Node.js from v12 to v18+ 3. Upgrade Next.js to latest stable version 4. Upgrade Keystone.js from v5 to v6 5. Migrate frontend from EC2 to Vercel 6. Migrate backend/API to a managed platform (Railway or Render) 7. Migrate MongoDB from self-hosted to MongoDB Atlas 8. Ensure zero data loss during migration 9. Testing and QA after migration **Goals:** - Eliminate recurring server downtime - Remove need for manual server management - Modern, maintainable codebase - Automatic deployments via GitHub **Please provide:** - Estimated timeline - Fixed price or hourly rate - Your relevant experience with Next.js and Keystone.js migrations - References or portfolio if available The codebase is on GitHub (private repos) and can be shared with shortlisted candidates.