Senior Full-Stack Developer for Existing SaaS — Next.js, Supabase & Stripe

Looking for a senior full-stack developer to maintain and improve an existing SaaS application. Stack: Next.js, React, TypeScript, Supabase, PostgreSQL, Netlify, Stripe, and GitHub. Work includes troubleshooting, bug fixes, feature improvements, and API integrations. Experience maintaining production applications and handling subscription billing is important. Please share examples of similar projects, explain your contribution, and include your hourly rate and availability.