Looking for a developer experienced in HTML5, JavaScript

I am looking for a senior developer with proven experience in HTML5, JavaScript and Phaser 3 to build a complete 2D arcade game playable directly in the browser. The project must be lightweight, modular and fully compatible with desktop and mobile. Core features include player movement, jump, attack, hitbox, enemies with simple AI, item and coin collection, multiple levels, progression, a final boss, Game Over screen and local save data.

Web3 integration is mandatory. The game must include wallet login on Solana and Polygon using Metamask, Phantom and TrustWallet, with support for NFT ownership reading and unlocking bonuses, skins or items based on NFTs in the wallet. No smart contract development is required only reading and verification.

The technical stack must be Phaser 3 or HTML5 Canvas with clean, modular JavaScript, full source code included, and a clear, extendable structure. Compatibility with Chrome, Firefox and Safari is required.

I will provide the game concept, character artwork, NFT bonus logic, level structure, UX flow and visual references.

Budget: 300–350 USD fixed.

To be considered, the developer must provide real, verifiable examples of HTML5 or Phaser work and demonstrate basic Web3 experience. A playable demo is required before any collaboration. The demo can be an existing project, a past work, or a small technical sample. It does NOT need to be related to my game. This requirement exists to verify technical ability not to request free work.

Only developers who can deliver clean, testable, browser‑ready code will be considered. If you cannot provide verifiable proof of your skills, please do not apply.