I will fix your nextjs build or vercel deployment error

Your Next.js app builds locally but fails on Vercel? Deploys hang, middleware returns 401/403/500, env vars work in one environment and not the other, or Supabase auth breaks only in production?

I run my own production apps on Next.js, Supabase, Vercel and Stripe, and fix this kind of problem every week.

How I work:

• I read the logs before I touch the code. You get the real cause, not a guess.
• Delegated access only: GitHub collaborator and Vercel team invites. I never need your passwords.
• Fixed scope. If the problem is bigger than your package, I tell you before I start and you decide.
• Every fix is verified with a real production deploy, plus a short write-up of what changed.
• AI-assisted, reviewed by me. I say so up front and review every change before you see it.

Typical fixes: build errors after a Next.js upgrade, App Router and server component errors, env vars missing in Preview or Production, middleware blocking routes, Supabase auth or RLS failing in production, Stripe webhooks failing after deploy, Cloudflare hiding the real error.

Apps built with Lovable, Bolt, v0, Replit or Cursor are welcome.