Remote Blockchain Engineer - Smart Contracts & DApps

The Bitcoin Street Journal; Dallas (TX); On-site; USD 90,000 - 95,000; Full time

Benefits offered by this job

Remote work

Blockchain tooling exposure

Job summary

DX Blockchain Group FZCO is hiring a Blockchain Developer to design, build, test, and maintain smart contracts, DApps, wallet integrations, and Web3 products. The role requires direct cryptocurrency or Web3 experience and production-grade knowledge of public blockchains, wallets, gas, and token standards.

Candidates must be legally authorized to work remotely from the United States. The position is full-time and focuses on secure, scalable blockchain engineering across DeFi, NFT marketplaces,

Qualifications

• Professional experience developing smart contracts, DApps, or blockchain infrastructure.
• Strong proficiency in Solidity and Ethereum Virtual Machine.
• Experience using Foundry, Hardhat, or another professional smart contract development and testing framework.
• Experience integrating applications with wallets, smart contracts, RPC endpoints, blockchain explorers, and on-chain data
• Understanding of Ethereum transactions, calldata, events, gas, nonces, signatures, private/public keys, contract storage, and transaction finality
• Understanding of common smart contract vulnerabilities and secure development practices
• Familiarity with DeFi, token standards, DEXs, liquidity pools, staking, multisignature wallets, bridges, oracles, governance
• Experience using Git, GitHub, automated testing, pull-request workflows, and CI
• Ability to explain previously developed blockchain products, deployed contracts, or meaningful open-source Web3 contributions
• Strong debugging, documentation, communication, and problem-solving skills

Responsibilities

• Design, develop, test, deploy, and maintain production-grade smart contracts and decentralized applications
• Build blockchain products across DeFi, NFT marketplaces, tokenized assets, wallets, payments, digital ownership, and Web3 infrastructure
• Develop secure smart contracts using Solidity and modern Ethereum development frameworks
• Integrate frontend and backend applications with blockchain networks, wallets, RPC providers, indexers, and smart contract APIs
• Implement token standards such as ERC-20, ERC-721, ERC-1155, permit-based approvals, and upgradeable patterns
• Build wallet connectivity using MetaMask, WalletConnect, ethers.js, viem, or web3.js
• Write automated unit, integration, fork, and end-to-end tests for smart contracts and workflows
• Review smart contracts for reentrancy, access-control errors, oracle manipulation, arithmetic issues, front-running exposure, signatures
• Optimize smart contract architecture and gas usage while ensuring readability and security
• Collaborate with product, design, security, infra, and client-facing teams to translate requirements into reliable blockchain products

Skills

Solidity

Ethereum VM

Foundry/Hardhat

Wallet integration

Security auditing

Git & CI

Tools

Foundry

Hardhat

OpenZeppelin

Ethers.js

Job description

DX Blockchain Group FZCO is hiring a Blockchain Developer to design, build, test, and maintain smart contracts, DApps, wallet integrations, and Web3 products. The role requires direct cryptocurrency or Web3 experience and production-grade knowledge of public blockchains, wallets, gas, and token standards.

Candidates must be legally authorized to work remotely from the United States. The position is full-time and focuses on secure, scalable blockchain engineering across DeFi, NFT marketplaces,