Full-Stack Web3 Developer for Decentralized Matrix Protocol & SaaS Dashboard (PortaGraph)

I’m building PortaGraph, a decentralized, portable relationship protocol designed for B2B affiliate and MLM structures. The core architecture relies on an immutable 2xN Binary Forced Matrix stored on-chain, combined with a seamless "Web2.5" user onboarding experience. We need an experienced Web3 Full-Stack Developer to build the smart contracts (Base L2), the off-chain data sync layer, and the responsive user dashboard. Frontend Requirements: • Modern stack using React or Next.js with TypeScript. • Interactive matrix visualization using React Flow, D3.js, or similar libraries to render the binary tree layout. • Seamless wallet authentication integration (Privy / Web3Auth) for social & email login. Backend & Data Layer: • Setup account abstraction using Biconomy or ZeroDev (ERC-4337) to handle embedded wallets and paymaster gas-depots (handling USDT/USDC native inbound transactions). • Build an off-chain synchronization layer (Node.js/Express or NestJS + PostgreSQL) to mirror the binary graph from the blockchain, handle the search algorithm (BFS) off-chain to minimize gas fees, and serve it via API. Smart Contracts (Solidity): • Core Registry Contract: Immutable 2xN binary forced matrix mapping logic with non-transferable Soulbound Tokens (SBT / ERC-721 modified). • Campaign Contracts: Dynamic upline compression logic for project-specific opt-ins and instant fee splits. • Safety holding contract logic (Grace period for upline protection).