Blockchain Developer Intern

Job Summary

Key Responsibilities

• Assist in researching blockchain protocols, wallet structures, transaction flows, and Web3 infrastructure.
• Support the development and testing of smart contract prototypes, scripts, or blockchain utilities.
• Assist with blockchain API integrations, wallet connection flows, and transaction monitoring tools.
• Help test smart contracts, blockchain interactions, and Web3 features in testnet environments.
• Support internal documentation for blockchain processes, technical flows, and integration notes.
• Assist in reviewing blockchain transaction logic, network behavior, gas fees, confirmations, and basic security considerations.
• Work with the Product and Technology teams to understand how blockchain features connect with user experience and operational controls.
• Support QA and UAT activities for blockchain-related platform features.
• Follow McCoin’s internal development, security, compliance, and documentation procedures.
• Escalate any technical, security, or operational issue to the Technology Lead.

Qualifications

• Currently pursuing or recently completed a degree in Computer Science, Software Engineering, Information Technology, Blockchain, or a related field.
• Basic understanding of blockchain concepts, including wallets, private keys, public addresses, transactions, confirmations, tokens, and smart contracts.
• Basic knowledge of at least one blockchain ecosystem such as Ethereum, Polygon, BNB Chain, Solana, or similar.
• Basic programming knowledge in one or more of the following:
• Solidity, JavaScript / TypeScript, Python, Node.js, Rust, optional
• Familiarity with Git and basic software development workflows.
• Ability to read technical documentation and learn new tools quickly.
• Good written English and ability to document work clearly.
• Strong attention to detail and willingness to work in a structured, regulated environment.

Skills & Tools

• Experience with testnets, smart contract deployment, or Web3 libraries such as ethers.js, web3.js, Hardhat, Foundry, or Truffle.
• Basic understanding of wallet integrations such as MetaMask or WalletConnect.
• Familiarity with blockchain explorers such as Etherscan, BscScan, or similar.
• Basic understanding of DeFi, token standards, or on-chain analytics.
• Awareness of smart contract security risks such as reentrancy, access control issues, and incorrect permissions.
• Interest in crypto compliance, transaction monitoring, and secure virtual asset operations.

Key Competencies

• Curiosity and willingness to learn
• Technical discipline
• Security awareness
• Strong documentation habits
• Problem-solving mindset
• Attention to detail
• Team collaboration
• Respect for compliance and operational controls
• Compensations and Benefits:
• Working Hours: Mondays to Fridays from 9AM to 5PM
• Duration: 3-6 months (with potential full-time conversion based on performance)
• Stipend: To be discussed