Senior Full-Stack Developer / System Architect

Hi, I am looking for an experienced **Senior Full-Stack Developer / System Architect** who specializes in Lovable, Supabase, PostgreSQL, GitHub and Vercel. I currently have a Debt Collection Management System (DCMS) that is already live and being used by my staff. **Current Technology:** - Lovable – Application development - GitHub – Source code - Vercel – Website hosting - Supabase Pro – Database **What I need:** **1. Full System Audit** - Review the entire application for bugs, incomplete features and technical issues. - Check whether the existing system is stable and properly structured. - Identify possible system crashes, failures and performance problems. **2. Security Audit** - Review Supabase security, RLS policies and database access. - Check user roles, permissions and authentication. - Identify vulnerabilities that could expose or compromise customer information. **3. Database & Performance** - Evaluate the database structure and performance. - Assess scalability for potentially 1 million customer records and 100 staff. - Recommend improvements to ensure long-term stability. **4. Backup & Disaster Recovery** - Review existing Supabase backups. - Propose automated database and uploaded-file backups. - Recommend a secondary database and disaster recovery solution. - Propose a backup website that can be activated if the primary website fails. - Ensure recovery procedures are tested and documented. **5. Documentation & Recommendations** - Provide a complete technical audit report. - Identify existing risks and recommended improvements. - Propose a practical implementation plan. **Important:** The system is already in production. Any review or implementation must avoid disrupting existing operations, changing business rules or losing customer and payment data. I would like to proceed in two stages: **Stage 1:** Technical audit and recommendations. **Stage 2:** Implementation of approved improvements, security fixes and backup solutions. Please provide your own professional quotation for both stages separately. I would appreciate it if you could share: 1. Your relevant project experience. 2. Your proposed approach. 3. Your quotation. 4. Your estimated timeline. 5. Your recommended long-term maintenance arrangements. My priority is to ensure the DCMS is secure, stable, scalable and properly backed up. Thank you.