Migration from CakePHP to Next.js

I'm in need of a talented Next.js developer for a project involving a range of tasks including Backend development, Frontend development, and API integration. If you're well versed JavaScript, this could be the ideal project for you. Project Description: Our project Movesbook, a fitness and sports activity tracking platform, was built for athletes, coaches, teams, clubs, and fitness enthusiasts to record, manage, and analyze their workouts in Italy. The previous version of the platform was developed using CakePHP. We migrated many parts of the original source to a modern stack using Next.js and Prisma to improve performance, scalability, and maintainability. But the migrated version has some vulnerablilities in security and also in performance, too. Performance Metrics Metric Target Concurrent Users 10 Thousands Processing Throughput Scalable Memory Efficiency Optimized LCP ≤ 2.5 s INP ≤ 200 ms CLS ≤ 100 ms Page Load Time ≤ 2.5 s Experienced Next.js Developer — Ongoing Project Rate: $30–$35/hour, 40 hours per week Performance goals Our aim is to support growth toward 10,000 concurrent users while targeting: LCP: ≤ 2.5 seconds INP: ≤ 200 ms CLS: ≤ 0.1 Page load time: ≤ 2.5 seconds What we’re looking for Strong experience with Next.js, React, and JavaScript Good working knowledge of PHP and CakePHP Experience with Prisma and relational databases Strong API integration skills Experience implementing payment gateways Confidence working with and improving an existing codebase A focus on secure, scalable, maintainable solutions Requirements Strong Next.js / React experience Good PHP / CakePHP knowledge Experience with Prisma and databases Strong API integration skills Payment gateway integration experience Comfortable working with and improving an existing codebase You Should Have Hands-on experience building and maintaining production applications with Next.js and React Strong JavaScript skills and the ability to work across frontend and backend Experience with Prisma, databases, API integrations, and payment systems The ability to investigate unfamiliar code, identify risks, and deliver reliable improvements Clear communication and a thoughtful, security-conscious approach to development Nice to Have Experience with PHP and CakePHP Experience migrating a legacy application to a modern stack Familiarity with performance optimization and Core Web Vitals Experience with fitness, sports, coaching, or activity-tracking products Experience supporting applications with high traffic or concurrent usage Experience with fitness, sports, or activity-tracking platforms is a plus. This is an ongoing project with potential for long-term collaboration. You should be comfortable working across both frontend and backend.