Hi all)
I have already developed:

- NFT Marketplace
Stack: React, Node.js, Express.js, MongoDB, Socket.iо, Redis, Firebase, Solidity
A custom-made version for the Estonian business with adaptation to the local market and support for settlements using bank cards

- AMM Exchange
Stack: Node.js, Express.js, MongoDB, FunC


- MLM projects on various models: matrix, binary and linear

Processing of fiat payments using Payeer, Perfect Money, bank cards and more. Accepting payments and payments using a variety of cryptocurrencies: BTC, LTC, ETH (ERC-20), BNB (BEP-20), TRON (TRC-20), TON (Jetton)

- Crypto Bridge

- Telegram bots

- Smart Contracts
Development for EVM-based blockchains on Solidity and FunC for TON SC's

PM me for cases and details.