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I will fix next js supabase bugs, debug web app crashes, API, auth and database errors
Temmy
About this gig
Is your Next.js or Supabase app crashing, showing errors, failing after deployment, or breaking during login, API, or database requests?
- Fix Next.js runtime, build, routing, hydration, React and TypeScript bugs.
- Debug Supabase Auth, RLS, PostgreSQL, API and Edge Function errors.
- Fix Vercel deployment, environment variable, production and failed build issues.
- Troubleshoot broken integrations, server/client issues, data-fetching problems and app crashes.
- Investigate slow pages, inefficient queries, excessive payloads and performance bottlenecks.
- Repair existing SaaS apps, dashboards, AI apps, MVPs and business web applications.
- Trace the root cause instead of applying random patches.
- Test the fix and verify the affected workflow before delivery.
- Work with Next.js, React, TypeScript, Node.js, Supabase, PostgreSQL and Vercel.
- Review your errors, logs, screenshots or repository to identify the scope.
My process:
- Reproduce the issue.
- Isolate the root cause.
- Apply and test the fix.
- Provide notes on what changed.
Send the error, screenshot/video, reproduction steps, and repository or logs before ordering. I will review the problem and confirm package for you.
Get to know Temmy
Temmy
AI SaaS MVP Developer, AI Apps, Website and Mobile Solutions
- FromNigeria
- Member sinceMay 2026
- Avg. response time1 hour
Languages
English, Spanish, German, French, Italian
I’m Temmy, an AI SaaS MVP developer helping founders turn ideas and existing projects into reliable, production-ready products. I build and improve AI web apps, SaaS platforms, business tools, and mobile apps. Whether you need an MVP created, a Lovable, Bolt, Base44, or Claude project fixed, AI features integrated, Shopify connected, or your app deployed to web and mobile, I focus on clean UI, solid functionality, fast problem-solving, and scalable solutions that fit your goals.
My priority is delivering products that work, perform well, and are ready for real users.
Thank you.
My Portfolio
FAQ
Can you fix Next.js and Supabase bugs?
Yes. I work with existing Next.js, React, TypeScript, Supabase, PostgreSQL and Node.js applications and can troubleshoot frontend, backend, database, authentication and API issues.
What types of Next.js errors can you fix?
I can troubleshoot runtime errors, build failures, routing issues, hydration problems, client/server issues, API failures, environment problems and deployment-related errors.
Can you fix Supabase authentication and RLS issues?
Yes. I can investigate Supabase Auth, session problems, Row Level Security policies, permissions, database access and related application errors.
Can you fix Supabase database or PostgreSQL errors?
Yes. I can investigate query errors, connection problems, incorrect data flow, permissions, migrations and selected database performance issues.
Can you fix a Next.js app that works locally but fails on Vercel?
Yes. I can troubleshoot build errors, environment variables, runtime problems, deployment configuration and application issues that appear only in production.
Can you fix API or authentication errors?
Yes. I can debug REST/API integrations, request failures, authentication flows, permissions, session handling and frontend/backend communication.
Do you work on existing web applications?
Yes. This Gig is specifically designed for existing applications that are already built but need debugging, repair, stabilization or targeted upgrades.
Do I need to give you my full repository?
Usually, repository access makes diagnosis and testing much easier. For smaller issues, relevant files, logs or a reproducible example may be enough.
Can you fix AI-powered web app bugs?
Yes. I can troubleshoot AI web applications built around Next.js, APIs, Supabase and related integrations, including broken requests, server-side errors and failed application workflows.
Can you fix a leaked Supabase key?
Yes. I can identify unsafe key exposure, review how the credential is being used, help rotate compromised credentials, move sensitive values into the correct server-side environment, and review the relevant Supabase RLS configuration. For management automation, I can also work with appropriately sc
