Blockchain Engineer (Freelance | WFH)

About BeGig
BeGig is a tech freelancing platform connecting skilled technology professionals with companies and founders seeking specialized expertise on a flexible, project-based basis.
Your Opportunity
We’re looking for experienced Blockchain Engineers who can design, develop, and deploy secure, scalable blockchain solutions. You’ll work on smart contracts, decentralized applications (dApps), Web3 integrations, and blockchain infrastructure to help businesses build transparent and reliable decentralized systems.
What You’ll Do
Design, develop, and maintain blockchain-based applications and decentralized systems
Write, test, audit, and deploy smart contracts
Build decentralized applications (dApps) and integrate blockchain functionality into existing platforms
Work with blockchain networks such as Ethereum and other EVM-compatible chains
Develop smart contracts using Solidity and relevant development frameworks
Integrate crypto wallets, tokens, payment systems, and third-party Web3 services
Build backend services and APIs for blockchain applications
Implement blockchain event monitoring, transaction handling, and on-chain data integrations
Optimize smart contracts for gas efficiency, security, and performance
Identify vulnerabilities and implement security best practices
Collaborate with frontend developers, backend engineers, product teams, and security specialists
Document technical architecture, smart contract logic, and integration workflows
What We’re Looking For
Strong experience in blockchain development and Web3 technologies
Proficiency in Solidity and smart contract development
Experience with Ethereum, EVM-compatible networks, or other blockchain platforms
Hands-on experience with tools such as Hardhat, Foundry, or Truffle
Familiarity with Web3 libraries such as Ethers.js or Web3.js
Understanding of blockchain architecture, consensus mechanisms, cryptography, and transaction processing
Experience integrating wallets and decentralized applications
Knowledge of smart contract testing, debugging, and security vulnerabilities
Familiarity with blockchain indexing, nodes, APIs, and event-driven systems
Experience with DeFi, NFTs, DAOs, tokenization, or Layer 2 solutions is a plus
Knowledge of backend development and databases is an advantage
Strong analytical and problem-solving skills
Ability to work independently and deliver secure, maintainable solutions
Why BeGig
Flexible freelance and project-based opportunities
Work with startups and enterprises across different industries
Get matched with relevant projects based on your skills and experience
Access to a trusted network of technology professionals and clients
Apply now to join BeGig as a Blockchain Engineer and build secure, scalable solutions for the decentralized web. 🔗

Work arrangement
Yes