2D Online RPG Game Development Node.js/Javascript OOP

We are looking for further development of our online game platform. Performance and goal based achievements. Must sign NDA before start. Disclamer: We seek for the candidates with the working skills as described below. Must have following skills: - Develop 2D online game in real-time with pure Javascript OOP (no plugins) Connect and parse data via web-sockets in real-time between Javascript and Node.js with low latency Save and parse data on server side via MongoDB via Node.js in real-time - Animate with programming 2D heroes, UI (user-interface) and spells in real-time with Javascript Canvas UI animation or CSS/HTML5 animation Requirements: Must work with existence code and continue write our Toolbox in Node.js/ Javascript OOP (no plugins) in Object oriented programming to support management, editing, creation of heroes, spells, pets, currencies, payments, lootpacks, events, achievements, vouchers, NFTs. UI with interactive buttons and events behaviour. UI maps, other features and stored in MongoDB. Multi-user access interface to Toolbox. Creating features above via Toolbox and game to show up via interactive UI in our game via Node.js web sockets and client-side Javascript: Events system Payment system integration create unique products with Toolbox for Apple and Google pay Achievement system Wheels system Spells System Pets System NFT crypto currency export to blockchain Facebook ads integration campaign Other features Test game and debug and log errors and fix errors quickly. Work condition: - Github daily update via text performance achieved Herokuapp upload and MongoDB Via skype daily Conditions: Remote flexible work Freelance contract pr hour or pr project achievement under NDA Long time project Salary based on performance