About The Role:

The Smart Contracts team is looking for a seasoned engineer who can contribute to the development of the Hedera services in both the Java and the web3 APIs in JS/TS that process smart contract transactions across the network submitted using varied web3 tools.

Qualification Requirements:

• Experience with distributed open-source application development
• Excellent debugging, critical thinking, and interpersonal skills
• Knowledge of the blockchain technology ecosystem, particularly the EVM
• Expertise in the Java and JS/TS programming language and its ecosystem of libraries and tools
• Experience with smart-contract development with Solidity/Vyper, Foundry, Web3.js / Ethers.js frameworks, JavaScript/TypeScript
• Experience with Ethereum Development Suites (e.g., Harhat, Foundry, Truffle, Ganache, Tenderly)
• Experience writing secure, efficient, and gas-optimized smart contracts for decentralized applications (DApps) on EVM-compatible networks
• Understanding of Ethereum ecosystem ERC20s, ERC721s, ERC1155s, on-chain and off-chain
• Experience with Wallet integrations (MetaMask, WalletConnect, etc.): Tools and libraries for connecting Web3 applications with users' cryptocurrency wallets
• Strong understanding of RESTful API design and development
• Familiarity with test-driven software development processes and continuous integration tools and systems
• Experience with web3 tools that support development, indexing, and transaction management, such as TheGraph
• 7+ years of software development experience
• Masters degree in Computer Science or a similar field or equivalent work experience

Other skills that are great to bring with you but that we can help you develop:

• Knowledge of the Hedera network
• Deep knowledge of and experience with the Java VM, covering its strengths and weaknesses
• 5+ years of Java experience
• Deep knowledge of and 5+ years of experience with Node JS, covering its strengths and weaknesses
• Strong grasp of Computer Science fundamentals including concurrency, performance optimization, and reusability
• Strong engineering principles and processes aimed at developing simple, modular, testable, and high-quality code
• Familiarity with security principles, cryptographic tools and libraries
• Familiarity with high-performance architectural systems and design patterns