Build WhatsApp Micro-Gig Lead Marketplace MVP (n8n + Supabase + Twilio + Stripe)

Summary:
We are building an MVP for a WhatsApp-based micro-gig marketplace. Clients submit a small one-off task via WhatsApp; matching handymen receive a lead preview; the first handyman to pay in CHF within XY minutes unlocks full client details (exclusive lead).

Tech stack:
n8n Cloud (orchestration, webhooks, scheduling)

Supabase (Postgres + Storage)

Twilio WhatsApp API (inbound/outbound messaging, media)

Stripe Checkout + Webhooks (payment gating and unlock)

Carrd/Webflow landing pages + Tally/Typeform forms (signup + optional fallback intake)

Key requirements
Exclusive claim locking (no double-selling): first successful payment wins.

3-minute claim/payment window; unpaid claims expire automatically.

Event logging/audit trail for all steps (messages, broadcasts, claims, payments, unlocks).

Bilingual client messaging: German + English (reply in user’s language).

Deliverables
Supabase schema + storage bucket + basic RLS approach

n8n workflows (documented) for intake, matching/broadcast, claim locking, Stripe webhook unlock

Twilio WhatsApp configured (webhook endpoints, outbound sending)

Stripe Checkout configured (product/price CHF 5, webhook)

Two landing pages: client “Click-to-WhatsApp” + handyman signup

End-to-end test passed in Stripe test mode (ready to switch live)

Skills required
n8n (webhooks, branching, retries/error handling)

Postgres/Supabase (schema design; transactions/locking)

Stripe webhooks + Checkout Sessions

Twilio WhatsApp webhooks + media handling

Clear documentation and handover

How to apply
Please share:
1–2 similar projects (workflow automation + payments + messaging APIs)

Approach and estimated milestones

Any risks you anticipate

IMPORTANT: I WILL IGNORE STANDARD MESSAGES.