Membership System Developer for Restaurant

We are looking for an experienced full-stack developer to build a custom membership and referral system for our restaurant. Customers should be able to create an account using their phone number or email and receive a unique membership QR code and referral code. Membership Features Customer registration and login Digital membership card with QR code Points and store credit wallet Transaction history Reward redemption Admin dashboard to manage members and rewards Referral Program Unlike traditional referral programs, this is a recurring referral system. Example: Customer A refers Customer B using their unique referral code or QR code. Every time Customer B dines at our restaurant, Customer A earns $2 in store credit. This is not a one-time referral reward. Customer A continues earning rewards every qualifying visit made by Customer B. Rewards stack over time. Maximum redemption per visit is $10 in store credit. Only one referral reward can be earned per receipt/table. Customer A and Customer B cannot be on the same table or receipt to prevent abuse. Loyalty Program Customers earn points based on dine-in purchases. Points can be redeemed for rewards. Store credit can be combined with the loyalty system. Staff/Admin Features Verify memberships by scanning QR codes. Apply referral rewards automatically after a qualifying transaction. View customer balances, referral history, and reward history. Manage promotions and reward rules. Export customer and transaction data. Preferred Technology We are open to recommendations. Experience building loyalty, membership, or referral systems for restaurants is preferred. Experience integrating with POS systems is a plus.