Full-Stack Developer - React, Next.js, Node.js SaaS Performance Check

We're looking for an experienced Full-Stack Developer with strong expertise in React, Next.js, Node.js, and MongoDB to help maintain, debug, and enhance our AI-powered SaaS platform. This role involves an audit of excisting SaaS platform, fixing existing issues and giving advice how to improve performance. Tech Stack: Backend: Node.js Frontend: Next.js / React.js Database: MongoDB Scope of Work Update the platform logo and optimize its sizing/display across the application Fix a booking flow bug where the shipping address displays incorrectly in certain scenarios Audit related modules to identify and resolve any additional underlying issues Perform thorough testing to confirm all fixes are stable and production-ready Preferred Experience Prior experience building or maintaining SaaS products, especially multi-tenant platforms Experience with AI-powered applications is a strong plus Proven track record delivering high-quality, scalable SaaS solutions Ability to quickly understand and navigate an existing codebase What We're Looking For If you're a detail-oriented developer who can jump into an existing production system, diagnose issues efficiently, and ship reliable fixes and new features, I'd love to hear from you.