I will integrate any blockchain network you required

K
klein_moretti20
K
klein_moretti20
klein
integrate any blockchain network you required
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integrate any blockchain network you required
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integrate any blockchain network you requiredintegrate any blockchain network you requiredintegrate any blockchain network you required

About this gig

Title: I will integrate any blockchain network like EVM, BTC, Cosmos, Solana into your app

Description:

Looking to empower your application with decentralized features?

I provide professional blockchain integration services to help you bridge the gap between Web2 and Web3. Whether you need a custom crypto wallet, a token swap interface, or real-time on-chain data tracking, I have the expertise to build secure and scalable solutions across multiple ecosystems.

What I Can Build For You:

  • Multi-Chain Wallet Integration: Seamless connection with Metamask, TrustWallet, Phantom (Solana), and Keplr (Cosmos).
  • Token Operations: ERC-20/BEP-20/SPL token creation, transfer, approval, and balance tracking.
  • DeFi Features: Integrating Uniswap/PancakeSwap SDKs for token swapping and liquidity provision.
  • NFT Functionality: Minting, listing, and metadata retrieval for NFT marketplaces.
  • Custom Node RPC: Setting up private nodes or using Infura/Alchemy for reliable data fetching.
  • Cross-Chain Bridges: Implementing logic to handle assets across different networks (EVM, Bitcoin, Solana).

Tech Stack:

Web3.js, Ethers.js, Solana-web3.js, CosmJS, TronWeb, React, Node.js.

Let's bring your Web3 idea to life.


  • Programming language

    • Other

Get to know klein

klein

Senior Blockchain and Backend Developer, Golang, Java and Smart Contracts Expert

  • FromChina
  • Member sinceJul 2026
  • Avg. response time2 hours

  • Languages

    English
With over 10 years of experience in software dev, I specialize in building secure blockchain solutions and high-performance backend systems. My core expertise lies in Golang and Java, alongside extensive work with Solidity for smart contracts. What I offer: • Blockchain: All blockchain wallets, DApps, and Smart Contract. • Backend: Robust API development and microservices using Golang/Java. • Security: Writing secure, bug-free code for financial applications. I am adaptable to new technologies and dedicated to delivering high-quality results on time. Let's build something great together!

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