Enhancements & Optimization for Buble.am Game

Buble.am Developer — Game Modes, Battles & VPS Optimization* I own Buble.am, an Agar.io-style multiplayer game that is already live and playable in your web browser: https://buble.am/ I want to restore and improve features from an older version of the game, and I can provide old gameplay videos as references. Main tasks: - Add independent server instances and ranking systems for FFX1, MegaSplit, X5 and Experimental. Hardcore is already working correctly and should remain unchanged. - Add a visible red 30-minute countdown to FFX1 that automatically restarts only its own server instance. - Fix and implement 1v1 and 2v2 battles, including friend invitations using the existing friends system and global battle invitations through in-game notifications. - Ensure the spectator system and synchronized battle timers work correctly. - Optimize my Peru-hosted Ubuntu VPS to reduce lag and gameplay delays. - Improve anti-cheat protection against macros, bots and exploits. The game uses Node.js, WebSockets, PM2 and Nginx. I want to improve the existing code rather than rebuild everything from scratch. I am looking for a developer who can review the game, suggest improvements and agree on the scope, budget and timeline with me before starting. I am from Peru and speak Spanish. My English messages are translated, so Spanish communication or written communication would be appreciated. Please share relevant experience and your proposed approach. I am interested in a potential long-term collaboration.