Smart Contract Engineering & dApp Development

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About this service

Summary

I design and develop secure, scalable, and innovative decentralized applications (dApps) that bring real-world usability to blockchain. With expertise across Ethereum, Solidity, and modern Web3 frameworks, I build everything from smart contracts to front-end dApps and back-end services.
My proven track record includes:
Staking Rewards Protocol – ERC-20 staking vaults with automated reward distribution.
NFT Marketplace – ERC-721 minting and trading system with fixed-price listings and event indexers.
Synthetic Assets – Minting synthetic USD (sUSD) backed by ETH collateral, with liquidation mechanics.
I specialize in Ethers.js/Web3.js integrations, React/Angular frontends, and Hardhat/TypeScript pipelines for deployment and testing. Whether you need a standalone dApp or a connected Web3 ecosystem, I can deliver high-quality, production-ready blockchain solutions tailored to your vision.

What's included

  • Smart Contracts

    written in Solidity (ERC-20, ERC-721, DeFi protocols, synthetic assets).

  • Deployment Scripts & Tests

    Using Hardhat + TypeScript, including unit/integration tests for security and correctness.

  • Backend Services & Bots

    (Node.js/TypeScript) for contract monitoring, event indexing, and automation.

  • API Integrations

    Expose blockchain data and interactions via REST/GraphQL endpoints.

  • Documentation

    Clear setup instructions, usage guides, and code comments.

  • Ecosystem Integration

    Demonstrating how dApps can work standalone or as part of a larger Web3 system (wallets, exchanges, DeFi protocols).

Recommendations

(5.0)

Gord Kagel • Trovela SPC

Client • May 3, 2025

Shailesh was very thoughtful in his approach to this project, and brought forward a couple of recommendations, including implementing a dashboard with more functionality than I had originally envisioned.


Skills and tools

Blockchain Developer

Solidity Engineer

Web Developer

Ethereum

Ethereum

Hardhat

Hardhat

Node.js

Node.js

Solidity

Solidity

Web3.js

Web3.js

Industries

Cryptocurrency & Blockchain