Senior Software Engineer - Smart Contracts Team

November 8

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Swirlds Inc

WebsiteLinkedInAll Job Openings

2 - 10 employees

🌐 Web 3

₿ Crypto

Description

• About Hashgraph: Hashgraph is a fast-growing software company committed to supporting, developing and servicing Hedera, an open source, proof-of-stake platform. Hedera is EVM-compatible and has been specifically built to meet the needs of enterprise and Web3 applications, which require speed, security, stability and sustainability. Hedera’s public network is governed by industry-leading organizations, spanning 11 sectors and 14 regions who oversee the development and direction of the decentralized platform. • 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. • You may find yourself doing all of the following: • Staying connected with the EVM ecosystem, bringing vital learnings, discussions, and applicable explorations on Hedera back to the team to improve EVM DevEx • Implementing and enhancing the Java-based smart contract services on the Hedera network that parse byte code and process transactions submitted to the network via an EVM client • Designing, developing, and maintaining server-side logic for back-end solutions with public APIs involving TypeScript, SQL, data ingestion, REST, GraphQL, and Web Sockets • Applying Web3 knowledge of Solidity and EVM transactions life cycle • Writing efficient, reusable, and reliable code to optimize for maximum speed, scalability, and system efficiency • Exploring and unblocking web3 tool and DApp integration capabilities on Hedera, ensuring devs can continue to use their familiar tools when migrating to Hedera from other EVM chains • Continuously discovering, evaluating, and implementing new technologies to maximize development efficiency and effectiveness • Developing various aspects of the Hedera Hashgraph Distributed Ledger Ecosystem • Being a strong and proficient hands-on programmer • Spending 80% of your time designing, coding, and testing

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 • Master’s degree in Computer Science or a similar field or equivalent work experience