Enhanced Multi-Chain DEX Screener

I already have a working DEX screener, but its feature set and chain coverage have fallen behind my users’ expectations. I want you to step in and extend what is there rather than build from scratch.

Core upgrades
• Token tracking has to be bullet-proof across Ethereum, Binance Smart Chain, Polygon and Solana. New pairs should appear within seconds and automatically inherit the existing charting tools.
• Price alerts must be configurable by percentage move, fixed price, or market-cap trigger and reach users instantly through both in-app notifications and a webhook endpoint I will supply.
• Trading-volume analysis should surface real-time and historical data (1 m, 5 m, 1 h, 24 h) and slot neatly into the current dashboard, keeping the existing look and feel.

Technical context
The project uses Next.js on the front end, Node.js with TypeScript on the back end, and a PostgreSQL database. On-chain data is fetched through existing WebSocket connections to Uniswap, PancakeSwap and QuickSwap; you will add any additional endpoints or indexers needed for Solana. Code is hosted in a private GitHub repository and deployed via Docker to an Ubuntu VPS.

Acceptance checks
– Token data for each supported chain refreshes in under 5 seconds.
– Price alerts fire accurately to the webhook and appear in the UI.
– Volume figures match the corresponding on-chain block explorer within 0.5 %.
– No regression to current features; all existing tests must still pass.

I will give you the repo, environment variables and a staging server the moment we agree on the engagement. If you have proven experience with multi-chain Web3 data pipelines and real-time dashboards, let’s get this upgrade shipped.