React Developer for Travel SaaS Platform (Next.js / Node.js / Supabase)

We're looking for a Senior Full-Stack Developer to join our team and help evolve a modern SaaS platform in the travel industry. This is an established product with an active codebase, and we're seeking someone who enjoys improving existing systems, solving complex technical challenges, and building scalable features. The platform is built with React, Next.js, Node.js, Supabase, PostgreSQL, and third-party APIs. While the product is fully functional, parts of the codebase were initially generated using AI-assisted development tools and now require thoughtful refactoring, architectural improvements, and ongoing feature development. What You'll Be Working On: - Refactor and optimize existing React, Next.js, and Node.js code - Develop new product features and user workflows - Build and extend backend APIs and business logic - Improve application architecture, performance, and scalability - Enhance Supabase backend logic, database structure, and security - Integrate and maintain third-party APIs - Troubleshoot production issues and improve overall reliability - Collaborate on technical architecture and product decisions - Ensure code quality through clean, maintainable development practices Tech Stack: - React - Next.js - Node.js - TypeScript - JavaScript - Supabase - PostgreSQL - REST APIs & Third-Party Integrations - AI Development - Modern SaaS Architecture We're Looking For Someone Who: - Has strong experience building and maintaining production SaaS applications - Is confident working across both frontend and backend using React, Next.js, and Node.js - Can quickly understand an existing codebase and improve it without unnecessary rewrites - Is comfortable working with AI-assisted code and transforming it into clean, maintainable software - Takes ownership of technical decisions and proactively suggests improvements - Writes scalable, well-structured, and maintainable code Experience with the travel industry, booking systems, and AI-assisted development workflows (Cursor, Claude Code, GitHub Copilot, etc.) is a plus. This is a long-term opportunity to help shape the future of an existing travel SaaS platform while working on meaningful product improvements, new features, and technical evolution.