Senior full-stack engineer to take over a live AI-built SaaS (Supabase, Vercel, Claude Code)

I run a live AI learning platform for companies in the UAE and Saudi. It has courses, voice roleplay and reports, in English and Arabic. It was built almost entirely with Claude Code, including a team of Claude agents. It moved fast and now I need one senior person to own the technical side properly. You'd take this off my plate completely. Stack: React, shadcn/ui, Tailwind, Supabase, Vercel, GitHub Actions, ElevenLabs, Claude Code. STEP 1: PAID ONE-WEEK AUDIT (FIXED PRICE) - Get the code and environments running, and map what's there - Review security, especially secrets, permissions and keeping customer data separate - Test the main user flows and list what's broken - Review the Claude agent setup, including what to keep, change or remove - Send me a plain-English report with fixes ranked by risk, plus time estimates STEP 2: FIX AND STABILISE Done means: - Security issues are fixed - Staging to production is clean, with a rollback option - Tests must pass before anything ships - Backups are set up and a restore has been tested - Monitoring and alerts are live - It holds up in a concurrent load test with 100 users - The docs are good enough for another engineer to take over STEP 3: ONGOING OWNERSHIP If the audit goes well, you'd own releases, bugs, infrastructure, security and the Claude agents on a monthly retainer. I'd get a short weekly update covering what shipped, what's at risk and what you need from me. TO APPLY, ANSWER THESE IN YOUR OWN WORDS: 1. Tell me about a live product you took over from someone else. What did you do in the first week? 2. How do you test that one customer can't see another customer's data in Supabase? 3. How do you use Claude Code day to day? Give me a time it got something wrong and how you caught it. 4. What's your price for the audit, your monthly retainer rate and your timezone overlap with Dubai? Start your proposal with the word "handover" so I know you read this.