Needl

As a senior blockchain developer, I can help you: - Build, test and deploy custom smart contracts for your needs in Ethereum, Polygon, Avalanche, Polkadot, Solana and Cosmos blockchains. - Build tools/scripts for interacting and extracting useful data from blockchains (ERC20 tokens, NFT, etc.), building subgraphs, etc. - Build your full stack application in Rust, NodeJS, Python and React from scratch to production. - Build your customized blockchain with Polkadot's Substrate or Cosmos SDK - Design and build React applications - Set up CI/CD pipelines on AWS, Azure, DigitalOcean - Debug and extend existing applications