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I will build or fix secure supabase apps with auth and rls
Siyu Ren
About this gig
Is your Supabase app facing authentication, database, or RLS issues?
I help founders and developers build, fix, and improve secure Supabase backends with PostgreSQL, authentication, Row Level Security, and API integrations.
I can help with:
Supabase Auth setup and troubleshooting
Login, session, and permission issues
PostgreSQL schema design and database fixes
Row Level Security (RLS) policies
API integration and backend logic
Database queries and performance improvements
Whether you are building a new SaaS application or fixing an existing Supabase project, I focus on creating reliable, secure, and maintainable backend solutions.
You will receive:
Clean backend implementation
Secure access control
Tested functionality
Clear technical handover
Please contact me before ordering so we can confirm your requirements and choose the right solution.
Get to know Siyu Ren
Siyu Ren
AI App Troubleshooting and Backend Developer
- FromChina
- Member sinceJul 2026
- Avg. response time1 hour
Languages
Chinese, English
I help founders rescue and stabilize AI-built web apps and backend systems. I diagnose deployment failures, Supabase Auth/RLS problems, API and database bugs, and Spring Boot issues, then deliver tested fixes with clear handover notes. My stack includes Lovable, Bolt, Replit, React, Vite, Supabase, Vercel, Java, Spring Boot, REST APIs, PostgreSQL, MySQL, Redis, and n8n. With 8 years of backend experience, I focus on root-cause analysis, secure access, clear scope, and practical fixes without unnecessary rebuilding.
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FAQ
Is this a complete SaaS or MVP?
The packages cover a defined foundation, feature module, or production SaaS slice. A complete multi-module MVP requires requirements review and a custom offer.
Can you build multi-tenant access with Supabase RLS?
Yes. I can implement tenant-aware database access and role boundaries when the accepted scope includes the required roles, tables, and workflows.
Can you work with my existing React or AI-generated app?
Yes. I can work with an existing React, Vite, Next.js, Lovable, Bolt.new, or Replit codebase after reviewing its structure, behavior, and constraints.
Which Supabase features can be included?
Depending on the package, scope may include Auth, PostgreSQL, RLS, Storage, Realtime, Edge Functions, REST APIs, or webhooks. We confirm the exact combination first.
Do you need my passwords or secret keys?
No. Never send passwords, OTPs, secret or service-role keys, database passwords, payment data, signed URLs, or private customer data. I provide steps for owner-only actions.
Are payment integration and subscriptions included?
No. Payment processing, subscriptions, billing portals, and financial integrations are not included in these packages and require separate review.
What does a revision include?
A revision covers adjustments needed to meet the accepted workflow and requirements. New roles, pages, features, integrations, or changed requirements need a separate offer.
Can you fix existing Supabase projects?
Yes. I can troubleshoot and fix existing Supabase projects including authentication, database issues, RLS policies, and API problems.
Do you build new Supabase backends?
Yes. I can build secure Supabase backends with authentication, PostgreSQL database design, RLS policies, and API integration.
What do you need before starting?
Please provide your Supabase project details, issue description, and expected result. Contact me before ordering to confirm the scope.
