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Staff Smart Contract Engineer
2 months ago
About Swirlds Labs:
Swirlds Labs 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 Java and the web3 APIs in JS/TS that process smart contract transactions across varied web3 tools.
You may find yourself doing all of the following:
- Staying connected with the EVM ecosystem and bringing vital learnings, discussions, and applicable explorations on Hedera back to the team to improve EVM DevEx
- Implementing and enhancing the Java and Node JS-based smart contract services on the Hedera network that expose EVM features
- Designing, developing, and maintaining server-side logic for back-end solutions involving TypeScript, SQL, data ingestion, REST, GraphQL, and Web Sockets
- Applying Web3 knowledge of Solidity, EVM transactions, ERC20s, ERC1155s, and ERC721s
- Writing efficient, reusable, and reliable code to optimize the web server applications 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
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, / frameworks JavaScript/TypeScript
- Experience with Ethereum Development Suites (e.g., Foundry, Truffle, Ganache, Hardhat, 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
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
- 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